Watlow PM LEGACY PM3 User Manual
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Watlow PM LEGACY PM3 User Manual

Pid controller
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PM3 PID Controller
ISO 9001
ISO 9001
1241 Bundy Boulevard., Winona, Minnesota USA 55987
Registered Company
Winona, Minnesota USA
Document #10-43723, Rev.-, December 2020
User Guide
For Configurations:
PM3_ _ [A,C,E,F,K] [A,C,J,K] -_ AAAN _ _
Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507
http://www.watlow.com
TOTAL
CUS S T T O O M M ER
CU
ER
S S A A TIS
TISF F A A CT
CTI I O O N N
3 Y ear Warranty
Made in USA

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Summary of Contents for Watlow PM LEGACY PM3

  • Page 1 Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507 S S A A TIS TISF F A A CT CTI I O O N N Registered Company http://www.watlow.com 3 Y ear Warranty Winona, Minnesota USA Document #10-43723, Rev.-, December 2020 Made in USA...

  • Page 2: Warranty

    1. If you are an End User, and this PM is installed in an OEM System, please contact the OEM to get the PM repaired. If you are an OEM or Watlow Distributor, please go to www.watlow.com/rma to start the RMA process. Watlow Customer Service will then respond back with the RMA num- ber via an e-mail.

  • Page 3: Table Of Contents

    Table of Contents Warranty ......... 2 Technical Assistance .
  • Page 4 Table of Contents (cont.) Chapter 5: Operations Page ......44 Analog Input Menu ....... . 46 Linearization Menu .
  • Page 5 Table of Contents (cont.) Tuning the PID Parameters .....114 Autotune ........114 Manual Tuning .
  • Page 6 Table of Contents (cont.) Using Lockout and Password Security ....131 Using Lockout Method 1 (Read and Set Lock) ..132 Using Lockout Method 2 (Password Enable) .

  • Page 7: Safety Information

    Safety Information We use note, caution and warning symbols throughout this book to draw your attention to important operational and safety information. A “NOTE” marks a short message to alert you to an important detail. A “CAUTION” safety alert appears with information that is important for protecting your equipment and perfor- mance.
  • Page 8 Unit has been reviewed and approved by CSA International for use as Temperature Indicating-Regulating Equipment per CSA C22.2 No. 24. See: www.csa-international.org Unit has been reviewed and approved by ODVA for compliance with DeviceNet communications protocol. See: www.odva.org Unit has been reviewed and approved by ODVA for compliance with Ethernet/IP communications protocol.

  • Page 9: Chapter 1: Overview

    Available at: https://www.watlow.com/ resources-and-support/Technical-Library/ All of the user documentation described above can be found on the Watlow website. Click on the following link to find your document of choice: http://www.watlow.com/literature/index.cfm. Once there, simply type in the desired part num- ber (or name) into the search box and download free copies.

  • Page 10: Introduction

    Introduction The PM3 LEGACY ™ PID takes the pain out of solving your thermal loop require- ments. Watlow’s PM3 LEGACY ™ PID controllers offer options to reduce system complexity and the cost of control loop ownership. You can order the PM3 LEGA- CY ™...
  • Page 11 Consistent Termination Labeling (CTL) connection system • Simplifies switching between products • Speeds up user’s system documentation Three-year warranty • Demonstrates Watlow’s reliability and product support Wa t low P M3 L E G ACY ™ PID Co n tro ll e r C hapter 1 Ove rvi ew •...

  • Page 12: Getting Started Quickly

    Getting Started Quickly The PM control has a page and menu structure that is listed below along with a brief descrip- tion of its purpose. Setup Page Once received, a user would want to setup Push and hold the up and down keys their control prior to operation.

  • Page 13: A Conceptual View Of The Pm

    PM LEGACY™ PID Default Configuration Input Output Process Function Function Value Controller Analog Input 1 Heat Input Sensor Heat (PV) Output 1 Thermocouple Type J Function Loop 1 A Conceptual View of the PM The flexibility of the PM’s software and hardware allows a large range of configurations. Ac- quiring a better understanding of the controller’s overall functionality and capabilities while at the same time planning out how the controller can be used will deliver maximum effectiveness in your application.

  • Page 14: Outputs

    Keep in mind that a function is a user-programmed internal process that does not execute any action outside of the controller. To have any effect outside of the controller, an output must be configured to respond to a function. Outputs Outputs can perform various functions or actions in response to information provided by a function such as, removal of the control voltage to a contactor;...
  • Page 15 PM LEGACY™ PID Model System Diagram Universal Sensor Input, Configuration Communications, Red/Green 7-Segment Display Output Input Functions Functions off, heat, cool, Output 1 none, switched dc/open collect- duplex, alarm, or, form C mechanical (5 A) relay, form A Analog Input 1 Controller retransmit, none, Thermocouple, RTD (100Ω,...

  • Page 16: Chapter 2: Install And Wire

    Chapter 2: Install and Wire Installation 1. Make the panel cutout using the 44.96 to 45.47 mm (1.77 to 1.79 in.) measurements in figure 1. 22.2 to 22.5 mm 2. Remove the green terminal connectors and (0.87 to 0.89 in.) the mounting collar assembly.

  • Page 17: Dimensions

    Dimensions 1/32 DIN 2.10in 0.40in 53.3mm 10.2mm 1.22in 30.9mm 1.350in 34.3mm 4.21in 106.9mm Mounting Panel 45.2 mm (1.78 inches) Recommended panel spacing 22.4 mm (0.88 inches) 21.6 mm panel thickness 1.53 to 9.52 mm (0.85 in) (0.060 to 0.375) 21.6 mm (0.85 in) Wa t low P M3 L E G ACY ™...

  • Page 18: Wiring

    Wiring Terminal Definitions for Slots A Slot A Terminal Function Configuration Inputs Universal, RTD and Thermistor Inputs S2 (RTD) or current + Input 1: all configurations S3 (RTD), thermocouple -, current -, potentiom- eter wiper, thermistor or volts - S1 (RTD), thermocouple +, volts +, potentiometer or thermistor Outputs Switched dc/open collector...
  • Page 19 Terminal Definitions for Slot C Slot C Terminal Function Configuration Power Power input: ac or dc+ Power input: ac or dc- Standard Bus Standard Bus EIA-485 common PM3 _ _ _ _ [A,B] AAAN _ _ Standard Bus EIA-485 T-/R- Standard Bus EIA-485 T+/R+ Standard Bus or Modbus EIA-485 Standard Bus or Modbus RTU EIA-485 common...

  • Page 20: Pm3 Legacy ™ Pid Isolation Blocks

    PM3 LEGACY ™ PID PM Isolation Blocks Digital Inputs & Outputs No Isolation Controller Power Supply 12 to 40VÎ (dc) Safety Isolation 20 to 28VÅ (ac) 100 to 240VÅ (ac) Switched DC, Open Collector, No Isolation Process outputs Controller Low Voltage Power Bus Low-voltage Analog Input 1 Isolation...
  • Page 21 Low Power PM3_ [3,4] _ _ _ AAAN _ _ ç Warning: • Minimum/Maximum Ratings Use National Electric (NEC) or Slot C power other country-specific standard fuse • 12 to 40VÎ (dc) power wiring and safety practices when wiring and connecting this •...
  • Page 22 Input 1 Thermocouple PM3 [C,R,T] _ _ _ _ _ AAAN _ _ ç Warning: Use National Electric (NEC) or other country-specific standard • 2kΩ maximum source resistance Slot A wiring and safety practices • >20MΩ input impedance when wiring and connecting this controller to a power source and •...
  • Page 23 Note: of an R.C. suppressor. See output curves pg 24. Internal Circuitry Watlow Part # 0804-0147-0000. • • Wa t low PM 3 LEG AC Y ™ P I D Co n t ro l l e r...
  • Page 24 (relay coils, solenoids, etc.) with the mechanical relay, solid state relay or open collec- tor output options requires use of an R.C. suppressor. Watlow Part # 0804-0147-0000. • • Watlow PM3 LEG ACY ™ PI D Co n t rol l e r...
  • Page 25 See Quencharc note. etc.) with the mechanical relay, solid state relay or open collec- tor output options requires use of an R.C. suppressor. Watlow Part # 0804-0147-0000. • • Wa t low PM 3 LEG AC Y ™ P I D Co n t ro l l e r...
  • Page 26 (relay coils, solenoids, etc.) with the mechanical relay, solid state relay or open collec- tor output options requires use of an R.C. suppressor. Watlow Part # 0804-0147-0000. • • Watlow PM3 LEG ACY ™ PI D Co n t rol l e r...
  • Page 27 (relay coils, solenoids, etc.) with the mechanical relay, solid state relay or open collec- tor output options requires use of an R.C. suppressor. Watlow Part # 0804-0147-0000. • • Wa t low PM 3 LEG AC Y ™ P I D Co n t ro l l e r...
  • Page 28 Output 2 Mechanical Relay, Form A ç Warning: • 5A at 240VÅ (ac) or 30V (dc) Use National Electric (NEC) or Slot A Î other country-specific standard maximum resistive load wiring and safety practices • 20mA at 24V minimum load when wiring and connecting this controller to a power source and •...
  • Page 29 In this example the Quencharc closure Digital Inputs shall not be User Load used in Class I Division 2 Hazard- circuit (Watlow part# 0804-0147- ous Locations unless switch used 0000) is used to protect PM in- Quencharc is approved for this application.
  • Page 30 RTU network. • Maximum network length: 1,200 meters (4,000 feet) • 1/8th unit load on EIA-485 bus. PM3 _ _ _ _ [1,E] _ AAAN _ _ Modbus-IDA EIA/TIA- Watlow Terminal Function Terminal 485 Name Label CA or CD...
  • Page 31 Standard Bus). Disturbance on the Standard Bus may occur. Wiring a Serial EIA-485 Network Two example networks are shown below where the first one is using Watlow's Standard Bus and the other showing connections over Modbus. Do not route network wires with power wires.
  • Page 32 A Network Using Modbus RTU Power LEGACY ™ Supply ST_ _ - (B or F) _ M _ -_ _ _ _ LEGACY ™ fuse power power common power power LEGACY ™ PM_ _ _ _ _-1AAAAXX power power common common Connecting a Computer to PM Controls Using B&B 485 to USB Converter Note:...
  • Page 33 Note: When connecting the USB converter to the PC it is suggested that the Latency Timer be changed from the default of 16 msec to 1 msec. Failure to make this change may cause communication loss between the PC running EZ-ZONE Configurator software and the con- trol.

  • Page 34: Chapter 3: Keys And Displays

    Chapter 3: Keys and Displays Left Display: Home at Manual Power: Output Activity: beginning displays process Indicates the set Indicate activity value (PV). Entering into point is in % manual of outputs 1 & 2, menus displays the value mode dio 5 &...

  • Page 35: Responding To A Displayed Message

    Responding to a Displayed Message An active message will cause the display to toggle between the normal settings and the active message in the red display and in the green display. attn Your response will depend on the message and the controller settings. Some messages, such as Ramping and Tuning, indicate that a process is underway.

  • Page 36: Chapter 4: Home Page

    Chapter 4: Home Page Default Home Page Parameters Watlow's patented user-defined menu system improves operational efficiency. The user-defined Home Page provides you with a shortcut to monitor or change the parameter values that you use most often. The default Home Page is shown on the following page. When a parameter normally located in the Setup Page or Operations Page is placed in the Home Page, it is accessible through both.

  • Page 37: Navigating The Pm3 Legacy ™ Pid Controller

    ™ Navigating the PM3 LEGACY PID Controller Home Page from anywhere: Press the Factory Page from Home Page: Press Infinity Key for two seconds to return to both the Advance and Infinity keys ‰ the Home page. for six seconds. Operations Page from Home Page: Press both the Up and Down...
  • Page 38 Ending a Profile from the Home Page 1. Press the Advance Key to select the Profile Action Request. The red display will show ‰ and the green display will show nonE p. a C1 2. Press the Up or Down keys to select the End.

  • Page 39: Modifying The Display Pairs

    Custom Menu Parameter Options Description Prompt * Autotune aUt1 Control Mode C. Л Џ1 Heat Power h. p r1 Cool Power C. p r1 Time Integral Time Derivative Dead Band Heat Prop Band h. p b1 On/Off Heat Hysteresis h. h y1 Cool Prop Band C.
  • Page 40 stated, will default (factory settings) to the Active Process Value loop 1 , and the Active aC. p u Set Point loop 1 . If two channels are present the first 2 pairs will be the same in that the aC.

  • Page 41: Conventions Used In The Menu Pages

    Seconds (2) Operations Page, Timer Menu If 4 digit of part number is equal to: PM3 [R, N] _ _ _ _ AAAN _ _ Control Mode Operations Page, Monitor Menu C. Л Џ1 Heat Power Operations Page, Monitor Menu h.

  • Page 42: Display

    360 (low order bytes) and 361 (high order bytes). Because the Modbus specification does not dictate which register should be high or low order, Watlow provides the user the ability to swap this order (Setup Page, CoЛЏ...
  • Page 43 Standard Bus, Modbus RTU can be ordered as optional hard- ware. To learn more about the RUI/GTW point your browser to the link below and search for key- word gateway. http://www.watlow.com/en/Resources-And-Support/Technical-Library/User-Manuals Wa t low P M3 L E G ACY ™ PID Co n tro ll e r C hap te r 4 H ome Page •...

  • Page 44: Chapter 5: Operations Page

    Chapter 5: Operations Page PM Operation Page Parameters To navigate to the Operations Page, follow the steps below: 1. From the Home Page, press both the Up and Down keys for three seconds. will appear in the red display and will appear in the green display.
  • Page 45 Loop P. s ta opEr opEr Loop Menu Profile Status Menu Control Mode Profile Start C. Л Џ P. s tr Autotune Set Point Profile Action Request A. t sp paCr Autotune Current Step Closed Loop Set Point Step Type C.

  • Page 46: Analog Input Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** opEr Analog Input Menu - - - - float Analog Input -1,999.000 to Instance 1 4001 Analog Input Value 9,999.000°F or units Map 1 Map 2 View the process -1,128.000 to value.

  • Page 47: Linearization Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** opEr Linearization Menu - - - - float Su. a Linearization -1,999.000 to Instance 1 34004 Map 1Map 2 Source Value A 9,999.000°F or Su.A - - - - 3566...

  • Page 48: Process Value Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** opEr Process Value Menu - - - - float Su. a Process Value -1,999.000 to Instance 1 26016 Source Value A 9,999.000°F or units Map 1 Map 2 Su.A...

  • Page 49: Monitor Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** - - - - uint di. s Digital Input (5 to 6) Instance 5 6011 Off (62) Input State Map 1 Map 2 di.S On (63) View this event input 1020...

  • Page 50: Control Loop Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** No Dis- - - - - uint Monitor Off (62) Instance 1 8027 play Autotune Status Waiting for cross 1 Map 1 Map 2 Read the present status positive (119) 1932...
  • Page 51 Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** 75.0°F float id. s Control Loop Low Set Point to Instance 1 7009 or units RWES High Set Point Map 1Map 2 Idle Set Point id.S 24.0°C Define a set point that...
  • Page 52 Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** float Control Loop -1,000.0 to Instance 1 8008 RWES Dead Band 1,000.0°F or units Map 1Map 2 Set the offset to the -556 to 556°C 1898 2378 proportional band.

  • Page 53: Alarm Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** aLЛЏ opEr Alarm Menu 32.0°F float a. L o Alarm (1 to 4) -1,999.000 to Instance 1 9002 or units RWES Low Set Point 9,999.000°F or Map 1Map 2 A.Lo...

  • Page 54: Timer Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** uint A. s ir Alarm (1 to 4) Instance 1 9027 Silence (1010) Map 1Map 2 Silence Alarm A.Sir Write to this register 1506 1906 to silence an alarm Offset to next...
  • Page 55 Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** - - - - Su. d Timer (1) Instance 1 31038 uint On (63) Source Value D Su.d Map 1Map 2 Off (62) View the state of 4644 8574 Source Function D.
  • Page 56 Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** No Dis- - - - - Timer On (63) Instance 1 31015 uint play Timer Timing Off (62) Map 1 Map 2 Indicates whether the 4598 8528 timer is running.

  • Page 57: Profile Status Menu

    Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** P. s ta * Some parameters in the Profile Status Menu can be changed for the cur- rently running profile, but should only be changed by knowledgeable per- opEr sonnel and with caution.
  • Page 58 Operations Page Data Type Parameter Name Modbus Parameter Display Range Default Description Relative Address Access ** hoUr Profile Status 0 to 9999 Instance 1 22078 uint Map 1Map 2 Hours hoUr Step time remaining in - - - - 4494 hours.

  • Page 59: Chapter 6: Setup Page

    Chapter 6: Setup Page Navigating the Setup Page To navigate to the Setup Page follow the steps below: 1. From the Home Page, press and hold both the Up and Down keys for six seconds. will appear in the red display and will appear in the green display.
  • Page 60 Power Input Point 4 ip. 4 Loop Manual Power * o. s p Output Point 4 op. 4 Control Loop Menu Control Mode * C. Л Џ Input Point 5 ip. 5 Heat Algorithm h. a g Output Point 5 op.
  • Page 61 Silence Alarm * a. s ir gLbL Alarm State * a. s t Global Menu Display Units tЛЏr AC Line Frequency aC. L f Timer Menu Ramping Type r. t yp Timer Enable ti. E n Timer Start Method Profile Type ti.

  • Page 62: Analog Input Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Analog Input Menu Analog Input Thermo- Instance 1 4005 uint Off (62) Sensor Type couple or Map 1 Map 2 RWES Thermocouple Set the analog sen- Thermis- (95) sor type to match...
  • Page 63 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Analog Input -100.00 to 1,000.00 Instance 1 4015 float Scale Low Map 1 Map 2 RWES Set the low scale for process inputs. This value, in millivolts, volts or milliamps, will correspond to the Range Low out-...
  • Page 64 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Analog Input Instance 1 4037 uint 5K (1448) Resistance Range Map 1 Map 2 RWES 10K (1360) Set the maximum 20K (1361) resistance of the thermistor input.

  • Page 65: Linearization Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Analog Input -1,999.000 to - - - - Instance 1 4001 float Analog Input Value * 9,999.000°F or units Map 1 Map 2 View the process -1,128.000 to value.
  • Page 66 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Linearization -1,999.000 to Instance 1 34008 float Input Point 1 9,999.000 Map 1 Map 2 RWES Set the value that - - - - 3574 will be mapped to output 1.
  • Page 67 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Linearization -1,999.000 to Instance 1 34022 float Output Point 5 9,999.000 Map 1 Map 2 RWES Set the value that - - - - 3602 will be mapped to input 5.

  • Page 68: Process Value Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Linearization -1,999.000 to Instance 1 34017 float 9,999.000 Map 1 Map 2 RWES Input Point 10 Set the value that - - - - 3592 will be mapped to output 10.

  • Page 69: Digital Input/Output Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Process Value 0.0 to 60.0 seconds Instance 1 26026 float Filter Map 1 Map 2 RWES Filtering smooths - - - - 3330 out the output sig- nal of this function block.
  • Page 70 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Digital Output Fixed Instance 5 6002 uint Fixed Time Base (5 to 6) Time Map 1 Map 2 RWES (34) Time Base Type Base 1002 1122 Variable Time Set the time base...
  • Page 71 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Digital Input (7 to High Instance 7 10001 uint high High (37) Map 1 Map 2 LoФІ Low (53) Active Level 1400 1640 Select which action will be interpreted Offset to next as a true state.

  • Page 72: Control Loop Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Digital Input (5 to 6) 0 to 40 Instance 5 10004 uint Function Instance Map 1 Map 2 RWES Select which Digital 1326 1566 Input will be trig- gered by a true Offset to next state.
  • Page 73 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop 0.001 to 9,999.000°F 25.0°F Instance 1 8012 float or units or units Map 1Map 2 RWES Cool Proportional Band * 0.001 to 5,555.000°C 14.0°C 1892 2372...
  • Page 74 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop Instance 1 8022 uint No (59) ® TRU-TUNE+ Map 1Map 2 RWES Yes (106) Enable 1910 2390 Enable or disable the TRU-TUNE+ adaptive tuning feature.
  • Page 75 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop User Instance 1 7012 uint Off, sets output Auto-to-Manual Map 1Map 2 RWES power to 0% (62) Power 2182 2662 Bumpless bpLs Select what the transfer, maintains controller outputs same output power, if...
  • Page 76 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop Instance 1 8039 uint No (59) Open Loop Detect Map 1Map 2 RWES Yes (106) Enable 1922 2402 Select Yes to de- tect conditions that prevent the process from changing in specified time...
  • Page 77 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop Minutes Instance 1 7015 uint hoUr Hours (39) Ramp Scale Map 1Map 2 RWES ЛЏin Minutes (57) Select the scale of 2188 2668 the ramp rate.

  • Page 78: Output Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Control Loop -100.0 to 100.0% Instance 1 7002 float (heat and cool) 0 to Map 1Map 2 RWES Manual Power * Set a fixed level 100.0% (heat only) 2162 2642...
  • Page 79 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Output Digital (1 to 0.1 to 60.0 seconds 1.0 sec. Instance 1 6003 float (solid-state relay or for SSR Map 1Map 2 RWES Fixed Time Base switched dc) or swdc 1004...
  • Page 80 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Output Process (1) Analog Instance 1 18003 uint Analog Input (142) Retransmit Source Input Map 1Map 2 RWES StPt Set Point (85) Select the value that Current Sam- CUrr will be retransmit-...

  • Page 81: Alarm Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Output Process (1) -1,999.000 to 100.0°F Instance 1 18012 float Range High 9,999.000°F or units or units Map 1Map 2 RWES Set the maximum -1,128.000 to 38.0°C value of the retrans- 5,537.000°C...
  • Page 82 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Alarm (1 to 4) Close On Instance 1 9005 uint AL. C Energize on Logic Alarm Map 1Map 2 RWES alarm (17) Select what the 1488 1888 De-energize on...
  • Page 83 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Alarm (1 to 4) -1,999.000 to 300.0°F Instance 1 9001 float 9,999.000°F or or units Map 1Map 2 RWES High Set Point If Type (Setup units 150.0°C 1480...
  • Page 84 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Alarm (1 to 4) Instance 1 9016 uint Off (62) Display Map 1Map 2 RWES On (63) Display an alarm 1510 1910 message when an alarm is active.

  • Page 85: Timer Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** tЛЏr Timer Menu Timer (1) Instance 1 31029 uint Yes (106) Timer Enable Map 1Map 2 RWES No (59) Enable the timer 4626 8556 function. Timer (1) Immedi- Instance 1...
  • Page 86 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Timer (1) 00:00 to 99:59 - - - - 31021 string Time Remaining Display the time remaining on the timer. Timer (1) - - - - Instance 1 31022 uint...

  • Page 87: Global Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Timer (1) 1 to 3600 Seconds Instance 1 31045 uint Signal Time Map 1Map 2 RWES Set the period of 4658 8588 time that a signal output to be acti- vated after the timer period is complete.
  • Page 88 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Global 0.0 to 9,999.000°F or 10.0°F or Instance 1 22007 float Guaranteed Soak units units Map 1Map 2 Deviation 1 0.0 to 5,555.000°C 6.0°C 2532 4352 Set the value of the deviation band that...
  • Page 89 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Global -2 to 2 % 0.00 - - - - - - - - float Synchronized Vari- able Time Base Used to acquire tighter accuracy when running a profile.

  • Page 90: Communications Menu

    Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Global None 1013 uint Instance 1 FCty Factory (31) Restore Settings Map 1Map 2 nonE None (61) From SEt1 User Set 1 Replace all of this (101) controller's settings SEt2...
  • Page 91 Setup Page Data Type Parameter Name Modbus Parameter Range Default Description Relative Address Access ** Communications None Instance 1 17003 uint nonE None (61) Parity Map 1Map 2 EuEn Even (191) Set the parity of 2486 2966 Odd (192) this controller to match the parity of the Modbus serial network.

  • Page 92: Chapter 7: Profiling Page

    Chapter 7: Profiling Page Navigating the Profiling Page Note: Some of these menus and parameters may not appear, depending on the controller's op- tions. See model number information in the Appendix for more information. If there is only one instance of a menu, no submenus will appear. Profile Setup First, consider some foundational profile setup features that once configured, will apply to all configured profiles.
  • Page 93 Once these global profile features are configured, the next step will require navigation to the Profiling Page. Here, each desired ramp and soak profile will be configured. To navigate to the Profile Page from the front panel, follow the steps below: 1.
  • Page 94 Configuring a Digital Input to Start and Stop a Profile 1. Navigate to the Setup Page and then the Digital I/O menu. From the Home Page, press and hold the or Down key for approximately six seconds where the red display will show and the green display will show 2.
  • Page 95 show and the green display will show Ent2 10. Press the Up or Down keys to select whether Event 2 will be on or off. This will immediately drive the Event to the specified state regardless of the Profile configuration. Note: The event state will be as left when the profile ended and may be toggled at the profile sta- tus menu.
  • Page 96 Profiling Parameters prof Profile (1 to 4) Profile [1 to 4] Step (1 to 40) s. t yp Step Type t. S P1 Target Set Point Loop 1 hoUr Hours ЛЏin Minutes Seconds ratE Rate ФІ. P 1 Wait For Process 1 ФІ.

  • Page 97: Profiling Menu

    Profiling Page Modbus Data Type Parameter Name Parameter Display Range Default Relative Description Address Access ** prof Profiling Menu 1 to 10 [profile 1] Profile [1 to 4] Step - - - - - - - - - - - - 11 to 20 [profile 2] Select a step to edit or view.
  • Page 98 Profiling Page Modbus Data Type Parameter Name Parameter Display Range Default Relative Description Address Access ** 0 to 59 Step Type Parameters Instance 1 21004 uint ЛЏin Minutes Map 1 Map 2 When Step Type is Time, Soak, 2576 4506 or Wait For Time enter Minutes (plus Hours and Seconds) for this Offset to...
  • Page 99 Profiling Page Modbus Data Type Parameter Name Parameter Display Range Default Relative Description Address Access ** Step Type Parameters Instance 1 21009 uint Off (62) ФІE. 1 Wait Event 1 Map 1 Map 2 On (63) WE.1 When Step Type is Wait for Event 2586 4516 nonE...
  • Page 100 Profiling Page Modbus Data Type Parameter Name Parameter Display Range Default Relative Description Address Access ** 0 to 9,999 Step Type Parameters Instance 1 21013 uint Jump Count Map 1 Map 2 When Step Type is Jump, this 2594 4524 specifies the number of jumps to repeat.
  • Page 101 Display Step Type Description Parameters in Step Type Step Types UStP Unused Step UStP This is an empty step that can be used to plan for future steps to - - - - be inserted or temporarily deactivate a step in a profile. Change step type back when the step should be active again.

  • Page 102: Chapter 8: Factory Page

    Chapter 8: Factory Page Navigating the Factory Page To navigate to the Factory Page follow the steps below: 1. From the Home Page, press and hold both the Advance and Infinity keys for six ‰ seconds. 2. Press the Up or Down key to view available menus.

  • Page 103: Custom

    Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** Cust fcty Custom Custom See: - - - - 14005 uint None nonE Parameter 1 to Home RWES Process Page Calibration Offset i. C A Select the param- Display Units eters that will ap-...

  • Page 104: Lock Menu

    Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** 1 to 4 Custom - - - - 14003 uint (1 to 20) RWES Instance ID Select which instance of the parameter will be selected.
  • Page 105 Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** 0 to 5 Security Setting Instance 1 3011 uint SLoC Write Security Map 1 Map 2 SLoC Set the write se- 1844 2314 curity clearance level.

  • Page 106: Unlock Menu

    Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** 10 to 999 Security Setting - - - - 3018 uint pas. a Administrator PAS.A Password Used to acquire full access to all menus includ- ing disabling or changing pass-...

  • Page 107: Diagnostics Menu

    Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** diag FCty Diagnostics Menu Diagnostics 15 characters - - - - - - - - 1009 string Part Number Display this controller's part number.

  • Page 108: Calibration Menu

    Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** 0 to 2,147,483,647 - - - - 1002 dint Diagnostics Instance 1 Display Firmware ID Map 1Map 2 Display the Firmware ID. FCty Calibration Menu -3.4e38 to 3.4e38 4021...
  • Page 109 Factory Page Parameter Name Modbus Parameter Data Type Display Range Default Description Relative Address and Access ** -1,999.000 to 9,999.000 18005 float Calibration Instance 1 ELo. o Electrical Output Map 1Map 2 RWES ELo.o Offset Change this val- Instance 3 ue to calibrate Map 1 Map 2 the low end...

  • Page 110: Chapter 9: Features

    Chapter 9: Features Changing PM Model Number to PM Express ... . . 112 Saving and Restoring Settings ......114 Programming the Home Page .
  • Page 111 Chapter 9: Features (cont.) Open Loop Detection....... . 131 Using Lockout and Password Security ....131 Using Lockout Method 1 (Read and Set Lock) .

  • Page 112: Changing Pm Model Number To Pm Express

    Additional Options Changes to Express Custom Options Standard LEGACY face plate LEGACY logo and no Watlow name No logo and no Watlow name Conformal Coating Class 1, Div. 2 (Not available with Integrated Limit Controller or mechanical relay outputs) Wa tl ow P M3 L E GAC Y ™...
  • Page 113 After switching the model number to a PM Express this document will no longer apply to the control. Click on the link that follows to acquire the latest version of the PM PID Ex- press User's Guide. http://www.watlow.com/en/Resources-And-Support/Technical-Library/ User-Manuals Once there, simply enter express in the "Keyword" field to find the appropriate document.

  • Page 114: Saving And Restoring Settings

    Programming the Home Page Watlow’s patented user-defined menu system improves operational efficiency. The user-de- fined Home Page provides you with a shortcut to monitor or change the parameter values that you use most often.

  • Page 115: Manual Tuning

    A new feature in PM 3 L E G ACY ™ P ID products will allow set point changes while the control is autotuning, this includes while running a profile or ramping. When the autotune is initially started it will use the current set point and will disregard all set point changes until the tuning process is complete.

  • Page 116: Autotuning With Tru-Tune

    Autotuning with TRU-TUNE+ ® The TRU-TUNE+ adaptive algorithm will optimize the controller's PID values to improve con- trol of dynamic processes. TRU-TUNE+ monitors the Process Value and adjusts the control parameters automatically to keep your process at set point during set point and load changes. When the controller is in the adaptive control mode, it determines the appropriate output signal and, over time, adjusts control parameters to optimize responsiveness and stability.

  • Page 117: Inputs

    When autotuning is complete, the PID parameters should provide good control. As long as the loop is in the adaptive control mode, TRU-TUNE+ continuously tunes to provide the best pos- sible PID control for the process. ç WARNING! During autotuning, the controller sets the output to 100 percent and attempts to drive the Process Value toward the set point.
  • Page 118 Calibration of Analog Inputs: To calibrate an analog input, you will need to provide a source of two electrical signals or resistance values near the extremes of the range that the application is likely to utilize. See recommended values below: Sensor Type Precision Source Low Precision Source High...

  • Page 119: Filter Time Constant

    of controller via PM3 LEGACY ™ PID Con- 10. Read Electrical Measurement value ЛЏu figurator or RUI. This will be referred to as Electrical Measured High. Record high value ______________ 11. Calculated Electrical Input Slope = (Precision High – Precision Low) / (Electrical Measured High - Electrical Measured Low) Calculated Slope value ___________ 12.

  • Page 120: Scale High And Scale Low

    Scale High and Scale Low When an analog input is selected as process voltage or process current input, you must choose the value of voltage or current to be the low and high ends. For example, when using a 4 to 20 mA input, the scale low value would be 4.00 mA and the scale high value would be 20.00 mA.

  • Page 121: Outputs

    Outputs Duplex Certain systems require that a single process output, control both heating and cooling out- puts. An P M3 LE GAC Y ™ PI D controller with a process output can function as two sepa- rate outputs. With a 4 to 20mA output the heating output will operate from 12 to 20mA (0 to +100 percent) and the cooling output will operate from 12 to 4mA (0 to -100 percent).

  • Page 122: Cool Output Curve

    Cool Output Curve A nonlinear output curve may improve performance when the response of the output device is nonlinear. If a cool output uses one of the nonlinear curves a PID calculation yields a lower actual output level than a linear output would provide.

  • Page 123: On-Off Control

    output load to reduce that difference. If a valid input signal is not present, the controller will indicate an input error message in the upper display and in the lower display and re- Attn . You can configure the spond to the failure according to the setting of Input Error Failure FaiL controller to perform a bumpless transfer , switch power to output a preset fixed level...

  • Page 124: Proportional And (P) Control

    Note: Input Error Failure Mode does not function in on-off control mode. The output goes faiL off. On/Off System Cycles On/Off System Cycles The cooling action switches on when The cooling action the process temperature rises above The heating action switches off when the process switches the set point plus the hysteresis.

  • Page 125: Proportional, Integral And Derivative (Pid) Control

    Proportional, Integral and Derivative (PID) Control PID Control Use derivative (rate) control to minimize the overshoot Set Point Reduced Overshoot in a PI-controlled system. Derivative (rate) adjusts Proportional Band the output power immediately based on the rate of change in the temperature or process value. Too much derivative (rate) will make the system sluggish.

  • Page 126: Single Set Point Ramping

    for each group of cycles. When used in conjunction with a zero cross (burst fire) device, such as a solid-state power controller, switching is done only at the zero cross of the ac line, which helps reduce electrical noise (RFI). Variable time base should be used with solid-state power controllers, such as a solid-state relay (SSR) or silicon controlled rectifier (SCR) power control- ler.

  • Page 127: Timer Function

    Timer Function 1. When Timer Enable is set to yes and the timer is started (you define which key ti. E n combination this is), the controller will switch from Set Point to Closed Loop Timer C. s p1 . If the timer is interrupted, the timer is terminated and the time remaining is Set Point Ct.

  • Page 128: Setting Up The Timer Function

    Setting Up the Timer Function 1. Press and hold up and down arrow keys for 6 seconds to enter into the Setup Page 2. Up arrow to Timer Menu tЛЏr 3. Advance to Timer Enable to make selection using the up ¿ and down ¯ arrow ti.
  • Page 129 10. Advance to Source Function D to select which input will acknowledge the ready sfn. d ‰ band. Use the up arrow to select from the options below: None nonE Digital I/O Function Key 11. Advance to Source Instance D and use the up arrow to make a selection below: ‰...

  • Page 130: Alarms

    Alarms Alarms are activated when the output level, process value or temperature leaves a defined range. A user can configure how and when an alarm is triggered, what action it takes and whether it turns off automatically when the alarm condition is over. Configure alarm outputs in the Setup Page before setting alarm set points.

  • Page 131: Silencing

    See the Keys and Displays chapter and the Home Page chapter for more details. An alarm that is not latched (self-clearing) will deactivate automatically when the alarm condition has passed. Turn latching on or off with Latching (Setup Page, Alarm Menu). a.

  • Page 132: Using Lockout Method 1 (Read And Set Lock)

    Using Lockout Method 1 (Read and Set Lock) All Pages have security levels assigned where two of those cannot be changed (Home and Setup). Defaults (factory settings) for each are shown below: - Home Page = 1 - Operations Page = 2 (changeable to 1, 2 or 3) - Setup Page = 4 - Profiling Page = 3 (changeable to 1, 2 or 3) - Factory Page = 5*...
  • Page 133 With the above settings, the Home Page and the Profiling Page can be accessed, and all writ- able parameters can be written to. Due to the Read lock setting of 2, all pages with security levels greater than 2 will be locked out (inaccessible). Another example of Method 1 lockout usage could be that an operator wants read access to all pages while allowing read/write access to the Home Page and the Lockout Menu only.

  • Page 134: Using Lockout Method 2 (Password Enable)

    Using Lockout Method 2 (Password Enable) It is sometimes desirable to apply a higher level of security to the control where a password would be required to access the control. If Password Enabled in the Factory Page pas. E under the Menu is set to on, an overriding Password Security will be in effect.

  • Page 135: Modbus - Using Programmable Memory Blocks

    word prompt will be displayed. Proceed to either step 7a or 8a. Pushing the Up pass or Down arrow keys enter either the User or Administrator Password. Once en- tered, press and hold the Infinity key for two seconds to return to the Home Page. b.

  • Page 136: Software Configuration

    PM3 LEGAC Y ™ P I D Configurator Software To enable a user to configure the PM control using a personal computer (PC), Watlow has pro- vided free software for your use. If you have not yet obtained a copy of this software insert the CD (Controller Support Tools) into your CD drive and install the software.
  • Page 137 Note: When establishing communications from PC to the P M3 L E GA C Y ™ P I D control an in- terface converter will be required. The Standard Bus network uses EIA-485 as the interface. Most PCs today would require a USB to EIA-485 converter. However, some PCs may still be equipped with EIA-232 ports, therefore an EIA-232 to EIA-485 converter would be re- quired.
  • Page 138 Any PM 3 LEGAC Y ™ PI D device on the network will appear in this window and would be available for the purpose of configuration or monitoring; simply click on the control of choice. After doing so, the screen below will appear. In the screen shot below notice that the device part number is clearly displayed at the top of the page (yellow highlight added for emphasis).
  • Page 139 ing on any of those items in the center column that context sensitive help will appear for that particular item in the right hand column. Lastly, when the configuration is complete click the "Finish" button at the bottom right of the previous screen shot.

  • Page 140: Chapter 10: Appendix

    Chapter 10: Appendix Troubleshooting Alarms, Errors and Control Issues Indication Description Possible Cause(s) Corrective Action Alarm won’t Alarm will not clear • Latching is active • Reset alarm when process clear or reset or reset with key- is within range or disable pad or digital input latching •...
  • Page 141 Indication Description Possible Cause(s) Corrective Action Sensor input be- • Temperature is less than • Check cause of under Alarm Low low low alarm set alarm set point temperature AL. L 1 point AL. L 2 • Alarm is set to latching •...
  • Page 142 Indication Description Possible Cause(s) Corrective Action Loop Re- Open Loop De- • Setting of Open Loop • Set correct Open Loop versed Error tect is active and Detect Time incorrect Detect Time for application the process value Lp. r 1 •...
  • Page 143 Indication Description Possible Cause(s) Corrective Action No Display No display indica- • Power to controller is off • Turn on power tion or LED illumi- • Fuse open • Replace fuse nation • Breaker tripped • Reset breaker • Safety interlock switch •...
  • Page 144 Indication Description Possible Cause(s) Corrective Action Temperature Process value • Controller output incor- • Verify output function is runway continues to rectly programmed correct (heat or cool) increase or de- • Thermocouple reverse • Correct sensor wiring (red crease past set wired wire negative) point.
  • Page 145 Voltage Source Open Range limiting only Shorted Range limiting only Reversed Range limiting only S1 open Yes, pulled up. S2 open Not implemented. S3 open Yes, pulled up. S1 short to S2 Yes, pulled up S1 short to S3 Yes, pulled down to under range. S2 shorted to S3 Not implemented, Possible, monitor S2 voltage.

  • Page 146: Modbus - Programmable Memory Blocks

    The screen shot above was taken from a program that can be found on the Watlow Support Tools DVD (shipped with the product) as well as on the Watlow website. On the DVD, it can be found under "Utility Tools" and is identified as "Modbus RTU Diagnostic Program for P M 3 LE GA C Y ™...
  • Page 147 Assembly Definition Addresses and Assembly Working Addresses Pointer Registers Working Registers 40 & 41 200 & 201 42 & 43 202 & 203 44 & 45 204 & 205 46 & 47 206 & 207 48 & 49 208 & 209 50 &...
  • Page 148 Assembly Pointer Assembly Working Assembly Working Assembly Pointer Registers Addresses Registers Addresses Registers 80 & 81 Registers 240 & 241 Registers 40 & 41 Registers 200 & 201 Pointer 21 = 360 & 361 Value of Pointer 21 Analog Input 1 Pointer 1 = 1880 &...

  • Page 149: Pm Specifications

    PM Specifications LineVoltage/Power (Minimum/Maximum Ratings) • 85 to 264VÅ (ac), 47 to 63Hz • 20 to 28VÅ (ac), 47 to 63Hz • 12 to 40VÎ (dc) • 10VA maximum power consumption • Data retention upon power failure via non-volatile memory •...
  • Page 150 Isolated Serial Communications • EIA232/485, Modbus ® Wiring Termination—Touch-Safe Terminals • Input, power and controller output terminals are touch safe removable 3.30 to 0.0507 mm (12 to 22 AWG) • Wire strip length 7.6 mm (0.30 in.) • Torque 0.56 Nm (5.0 in-lb) Universal Input •...
  • Page 151 Accuracy Accuracy Input Type Max Error @ 25 Deg C Units Range Low Range High Volts ±0.01 Volts mAmps mAdc ±0.02 mAmps mAac ±5 Operating Range Input Type Range Low Range High Units -210 1200 Deg C -270 1371 Deg C -270 Deg C -270...
  • Page 152 • Linearization curves built in • Third party Thermistor compatibility requirements Alpha Base R @ Beta Thermis- Tech- THERM tor Curve niques 2.252K Curve A 2.2K3A Curve A 10K3A Curve C 10K4A 2 Digital Input/Output Option - 2 DIO • Digital input update rate 10Hz - DC voltage - Max.
  • Page 153 • Switched dc/open collector = 30VÎ (dc) max. @ 100mA max. current sink • Solid State Relay (SSR), FormA, 0.5A @ 24VÅ (ac) min., 240VÅ (ac) max., 1A at 50°F linear derating to 0.5A at 149°F resistive, opto-isolated, without contact suppression, 120/240VÅ (ac) 20 VA pilot duty •...

  • Page 154: Ordering Information For Pid Controller Models

    CUSTOM OPTIONS Standard LEGACY™ face plate Class 1, Div. 2 (Not available with mechanical relay output types E, H, J) No logo and no Watlow name Conformal coating Custom firmware, overlays, parameter settings Wa tl ow P M3 L E GAC Y ™...

  • Page 155: Declaration Of Conformity

    Declaration of Conformity Series EZ-ZONE ® WATLOW Electric Manufacturing Company 1241 Bundy Blvd. Winona, MN 55987 USA Declares that the following product: Designation: Series EZ-ZONE ® PM (Panel Mount) Model Numbers: PM (3, 6, 8, 9 or 4)(Any Letter or number)(1, 2, 3 or 4)(A, C, E, F or K) (A, C, H, J or K) –...

  • Page 156: How To Reach Us

    Fax: +61 3 9330 3566 47100 Puchong, Selangor D.E. Website: www.watlow.com Malaysia Tel: +60 3 8076 8745 Fax: +60 3 8076 7186 Watlow Electric Manufacturing Company (Shanghai) Co. Ltd. Email: vlee@watlow.com Room 501, Building 10, KIC Plaza Website: www.watlow.com 290 Songhu Road, Yangpu District 瓦特龍電機股份有限公司...

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