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Future Design LIMIT L91 User Manual

Microprocessor based limit controller
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User's Manual
User's Manual
LIMIT
OP1
OP2
PV
HSP1
LIMIT L91
LIMIT L91
Microprocessor Based Limit Controller
Microprocessor Based Limit Controller
FDC-L91
C
F
LSP1
SP2 LOCK
RESET

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Summary of Contents for Future Design LIMIT L91

  • Page 1 User's Manual User's Manual LIMIT FDC-L91 HSP1 LSP1 SP2 LOCK RESET LIMIT L91 LIMIT L91 Microprocessor Based Limit Controller Microprocessor Based Limit Controller...
  • Page 2 This manual is applicable for L91 units with software version 1.9 and later. Copyright a March 2006, Future Design Controls, all rights reserved. No part of this publication may be reproduced, transmitted, transcribed or stored in a retrieval system, or translated into any language in any form by any means without the written permission of Future Design Controls.

  • Page 3: Table Of Contents

    Contents Page No Page No Chapter 1 Overview Chapter 1 Overview 3-4 PV Shift 3-5 Digital Filter 1-1 General 1-2 Ordering Code 3-6 Process Alarms 1-3 Programming Port 3-7 RS-485 Communication 1-4 Keys and Display 3-8 Display Mode 3-9 Signal Conditioner DC 1-5 Menu Overview Power Supply 1-6 Limit Control Operation...
  • Page 4 Figures & Tables Figures & Tables Page No Figure 1-1 Programming Port Location Figure 1-2 Front Panel Display Figure 1-3 Power Up Sequence Figure 1-4 High Limit Operation Figure 1-5 Low Limit Operation Figure 1-6 High/Low Limit Operation Figure 2-1 Mounting Diagram Figure 2-2 Lead Termination Figure 2-3 Rear Terminal Connection Diagram Figure 2-4 Power Supply Connections...

  • Page 5: Chapter 1 Overview

    Chapter 1 Over view Chapter 1 Over view 1-1 General 1-1 General The limit control is a microprocessor based high or low limit safety device with a latching output. The relay contacts open if an abnormal condition during the process is higher than the high limit set point or lower than the low limit set point.

  • Page 6: Ordering Code

    1-2 Ordering Code 1-2 Ordering Code Power Input Power Input Output 1 Output 1 4: 90 - 264 VAC, 50/60 HZ 1: Form C relay rated 5: 11 - 26 VAC or VDC 2A/240VAC 9: Special Order 2: Pulsed voltage to drive SSR, 5V/30mA Signal Input Signal Input...

  • Page 7: Programming Port

    Related Products Related Products P11A = Hand-held Programmer for L91,C91 Series Controller SNA10A = Smart Network Adaptor for Third Party Software, Converts 255 channels of RS-485 or RS-422 to RS-232 Network SNA10B = Smart Network Adaptor for FD-Net Software, Converts 255 channels of RS-485 or RS-422 to RS-232 Network 1-3 Programming Port 1-3 Programming Port...
  • Page 8 ENTER KEY 4 seconds, 8 seconds Press the scroll key for 4 seconds the display will enter the setup menu. Press this key for 8 seconds to enter the calibration mode. UP KEY This key is used to increase the selected parameter value during the lock indicator is off.
  • Page 9 DISPLAY FORM DISPLAY FORM Table 1-1 Display Form of Characters Table 1-1 Display Form of Characters : These characters are displayed differently. How to display a 5-digit number : How to display a 5-digit number : For a number with decimal point the display will be shifted one digit right: -199.99 will be displayed as -199.9, 4553.6 will be displayed as 4553 For a number without decimal point the display will be divided into two alternating phases:...
  • Page 10 SENSOR BREAK DISPLAY SENSOR BREAK DISPLAY If a break is detected in the sensor circuit, the display will show: A-D FAILURE DISPLAY A-D FAILURE DISPLAY If failure is detected in the A-D converter circuit, the display will show: POWER UP SEQUENCE POWER UP SEQUENCE LIMIT FDC-L91...
  • Page 11 LIMIT FDC-L91 LF LF Display the serial number ( 001~999 ) for 1 second. HSP1 LSP1 SP2 LOCK RESET LIMIT FDC-L91 LF LF HSP1 LSP1 SP2 LOCK RESET Display the hours used for 2 seconds. The left diagram shows that the unit has been used for 23456.7 hours since production.

  • Page 12: Menu Overview

    1-5 Menu Overview 1-5 Menu Overview Setup Mode Setup Mode Press for 4 sec. Input type INPT PV Value PV Value Process UNIT Process unit value or SAFE or SAFE Display resolution RESO Low scale value for linear IN.LO input High limit High scale value for linear IN.HI...

  • Page 13: Limit Control Operation

    Note 1. Note 1. The flow charts show a complete listing of parameters. For the actual application the number of available parameters is dependent on the setup conditions, and should be less than that shown in the flow charts. Note 2. Note 2.
  • Page 14 LOW LIMIT OPERATION LOW LIMIT OPERATION If Lo. is selected for OUT1, the unit will perform low limit control. When power is applied the OUT1 relay is de-energized. After 6.5 seconds self-test period, if the process is above the low limit set point (LSP1), the output 1 relay will be energized and OP1 indicator will go off.
  • Page 15 HIGH/LOW LIMIT OPERATION HIGH/LOW LIMIT OPERATION If Hi.Lo is selected for OUT1, the unit will perform high/low limit control. When power is applied the OUT1 relay is de-energized. After 6.5 seconds self-test period, if the process is below the high limit set point (HSP1) and above the low limit set point (LSP1), the output 1 relay will be energized and OP1 indicator will go off.

  • Page 16: Parameter Descriptions

    1-7 Parameter Descriptions 1-7 Parameter Descriptions Parameter Parameter Default Range Notation Description Value Low: HSP .L 100.0 C High Limit Set point 1 HSP1 High: HSP .H (212.0 F) Low: LSP .L Low Limit Set point 1 LSP1 High: LSP .H (32.0 F) Set point 2 Value for 90.0 C...
  • Page 17 Parameter Parameter Default Range Notation Description Value : 4~20 mA linear current : 0~20 mA linear current* : 0~60 mV linear voltage : 0~1 V Input Type Selection INPT ( 0 ) linear voltage : 0~5 V linear voltage : 1~5 V linear voltage : 0~10V linear voltage...
  • Page 18 Parameter Parameter Default Range Notation Description Value High Scale Value for Low: IN.LO 100.0 IN.HI Linear Input High: 45536 Low: -200.0 C PV Shift ( offset ) (-360.0 F) SHIF High: 200.0 C Value (360.0 : 0 second time constant : 0.2 second time constant : 0.5 second...
  • Page 19 Parameter Parameter Default Range Notation Description Value Low: 0.1 Output 1 Hysteresis O1.HY High: 10.0 BC (18.0 BF) Value Low: -19999 HSP .L Lower Limit of HSP1 High: HSP .H (32.0 F) Low: HSP .L 1000.0 C HSP .H Upper Limit of HSP1 High: 45536 (1832.0 F) Low: -19999...
  • Page 20 Parameter Parameter Default Range Notation Description Value : 1.2 Kbits/s baud rate : 2.4 Kbits/s baud rate : 4.8 Kbits/s baud rate : 9.6 Kbits/s Baud Rate of Digital baud rate BAUD COMM : 14.4 Kbits/s baud rate : 19.2 Kbits/s baud rate : 28.8 Kbits/s baud rate...
  • Page 21 Parameter Parameter Default Range Notation Description Value : Normal alarm action Alarm mode AL.MD : Latching alarm action Low: 0.1 Alarm hysteresis High: 10 BC AL.HY value (18.0 BF ) : Alarm output goes off as unit fails AL.FT Alarm failure transfer : Alarm output goes on as unit fails...

  • Page 22: Chapter 2 Installation

    Chapter 2 Installation Chapter 2 Installation Dangerous voltages capable of causing death are present in this instrument. Before installation or beginning any troubleshooting procedures the power to all equipment must be switched off and isolated. Units suspected of being faulty must disconnected and removed to a properly equipped workshop for testing and repair.

  • Page 23: Wiring Precautions

    nstall both mounting clamps and insert the housing into panel cutout. +0.5 Panel cutout +0.5 Panel 86 mm 94 mm Figure 2-1 Mounting Diagram Figure 2-1 Mounting Diagram 2 - 3 Wiring Precautions 2 - 3 Wiring Precautions Before wiring, verify the label for correct model number and options.
  • Page 24 Unused control terminals should not be used as jumper points as they may be internally connected, causing damage to the unit. Verify that the ratings of the output devices and the inputs as specified in Chapter 6 are not exceeded. Electric power in industrial environments contains a certain amount of noise in the form of transient voltage and spikes.

  • Page 25: Power Wiring

    2-4 Power Wiring 2-4 Power Wiring The unit is supplied to operate at 11-26 VAC / VDC or 90-264VAC.Check that the installation voltage corresponds with the power rating indicated on the product label before connecting power to the unit. Fuse 90 264 VAC or 11 26 VAC / VDC Figure 2-4...

  • Page 26: Thermocouple Input Wiring

    In a liquid process, addition of a stirrer will help to eliminate thermal lag. Since the thermocouple is basically a point measuring device, placing more than one thermocouple in parallel will provide an average temperature readout and produce better results in most air heated processes.

  • Page 27: Rtd Input Wiring

    Figure 2.5 Figure 2.5 Thermocouple Input Wiring Thermocouple Input Wiring 2-7 RTD Input Wiring 2-7 RTD Input Wiring RTD connection are shown in Figure 2-6, with the compensating lead connected to terminal 4. For two-wire RTD inputs, terminals 4 and 5 should be linked.

  • Page 28: Linear Dc Input Wiring

    2-8 Linear DC Input Wiring 2-8 Linear DC Input Wiring DC linear voltage and linear current connections are shown in Figure 2-7 and Figure 2-8 . 0~60mV, 0~1V, 0~60mV, 0~1V, 0~5V, 1~5V, 0~5V, 1~5V, 0~10V 0~10V Figure 2.7 Figure 2.7 Linear Voltage Linear Voltage Input Wiring Input...

  • Page 29: Event Input Wiring

    2-9 Event Input wiring 2-9 Event Input wiring Open Collector Open Collector Switch Input Switch Input Input Input Figure 2-9 Figure 2-9 Event Input Wiring Event Input Wiring The event input can accept a switch signal as well as an open collector signal.

  • Page 30: Output 1 Wiring

    2-10 Output 1 Wiring 2-10 Output 1 Wiring Figure 2-10 Figure 2-10 Output 1 Wiring Output 1 Wiring Max. 2A Max. 2A Resistive Resistive Load 120V/240V 120V/240V Mains Supply Mains Supply To Controller To Controller Relay or Triac Output Relay or Triac Output Direct Drive Direct Drive Output...

  • Page 31: Output 2 Wiring

    2-11 Output 2 Wiring 2-11 Output 2 Wiring Max. 2A Resistive LOAD 120V/240V Supply Relay or Triac Output Relay or Triac Output LOAD 120V/240V Supply Pulsed Voltage to Drive SSR Pulsed Voltage to Drive SSR Sensor Transmitter DC Power Supply Output DC Power Supply Output Figure 2-11 Output 2 Wiring Figure 2-11 Output 2 Wiring...

  • Page 32: Ma Retransmission

    2-12 RS-485 2-12 RS-485 RS-485 to RS-232 network adaptor SNA10A or SNA10B RS-485 RS-232 Twisted-Pair Wire Figure 2-12 Figure 2-12 RS-485 Wiring RS-485 Wiring Max. 247 units can be linked 2-13 Retransmission Output 2-13 Retransmission Output Output options include: Ma and VDC MA/VDC UM L91-Rev 8...

  • Page 33: Chapter 3 Programming

    Chapter 3 Programming Chapter 3 Programming 3-1 Process Input 3-1 Process Input Press for 4 seconds to enter setup mode. Press to select the parameter. The display will indicate the parameter symbol and the value ( or selection ) for that parameter. INPT: Selects the sensor type and signal type for the process input.

  • Page 34: Limit Control

    S-SL Formula: PV = IN.LO + ( IN.HI IN.LO ) Formula: SH-SL Example: a 4-20 mA current loop pressure transducer with range Example: 0 - 15 kg/cm , is connected to input, then perform the following setup: INPT = 4-20 mA IN.LO = 0.0 UNIT = PU IN.HI = 15.0...

  • Page 35: Pv Shift

    3-4 PV Shift 3-4 PV Shift In certain application it is desirable to shift the indicated value from its actual value. This can be easily accomplished with this unit by using the PV shift function. Cycle the unit to the SHIF parameter by using the scroll key. The number you adjust here, either positive or negative, will be added to the actual value.

  • Page 36: Process Alarms

    3-6 Process Alarms 3-6 Process Alarms The output 2 will perform process alarm function by selecting ALM for OUT2 and PV.H.A or PV.L.A for AL.FN. If PV.H.A is selected the alarm will perform process high alarm. If PV.L.A is selected the alarm will perform process low alarm. The process alarm sets an absolute trigger level.

  • Page 37: Communication

    Examples: Figure 3.3 Figure 3.3 Process proceeds Process proceeds Normal Process Alarm Normal Process Alarm Figure 3.4 Figure 3.4 SP2 = 200 SP2 = 200 AL.HY = 10.0 AL.HY = 10.0 Latching Process Alarm Latching Process Alarm AL.MD = LTCH AL.MD = LTCH AL.FN = PV.H.A AL.FN = PV.H.A...

  • Page 38: Display Mode

    Select COMM for OUT2 in setup menu, the output 2 will perform RS-485 interface with Modbus RTU Mode Modbus RTU Mode protocol. Setup 1. Select COMM for OUT2 2. Set an unequal address (ADDR) for those units which are connected to the same port. 3.
  • Page 39 Two-line Two-line Transmitter Transmitter OUT2 = OUT2 = DC Power Supply Figure 3-5 Figure 3-5 DC Power Supply DC Power Supply 4-20mA Application Application Three-line Three-line Transmitter Transmitter or sensor or sensor V or mA Bridge Type Bridge Type Sensor Sensor Caution: Caution:...

  • Page 40: Remote Reset

    3-10 Remote Reset 3-10 Remote Reset If EIFN is selected for OUT2 and REST is selected for EIFN, terminals 1 & 2 will act as remote reset input. Pressing remote reset button will perform the same function as pressing the RESET key. Refer to section 1-4 section 1-4 for RESET key function.

  • Page 41: Limit Annunciator

    3-12 Limit Annunciator 3-12 Limit Annunciator If L_AN (Limit annunciator) is selected for OUT2, the output 2 will act as a Limit Annunciator. If the limit is or has been reached and the RESET key (or remote reset contacts)has not been pressed since the limit was reached, then the limit annunciator output will be energized and the OP2 indicator will be lit and remain unchanged until the RESET key or remote reset input is applied.

  • Page 42: Chapter 4 Applications

    Chapter 4 Application Chapter 4 Application Temperature Control Rear View Reset Limit Control Button Heater Rear View Mechanical Contactor Figure 4-1 Over Temperature Protection with Remote Reset Figure 4-1 Over Temperature Protection with Remote Reset UM L91-Rev 8...

  • Page 43: Chapter 5 Calibration

    Chapter 5 Calibration Chapter 5 Calibration Do not proceed through this section unless there is a definite need to re-calibrate the controller. Otherwise, all previous calibration data will be lost. Do not attempt re-calibration unless you have appropriate calibration equipment. If calibration data is lost, you will need to return the unit to your supplier who may change you a service fee to re-calibrate the unit.
  • Page 44 Figure 5-1 Figure 5-1 Flow Chart for Manual Flow Chart for Manual Normal Mode Calibraton Calibraton 4 seconds RESET Setup Mode 4 seconds RESET Step 1 4 seconds RESET Step 2 4 seconds RESET Step 3 CJTL 4 seconds RESET Step 4 4 seconds RESET...
  • Page 45 Step 2: Calibrate Gain of A to D converter. Send a span signal to terminal 4 and 5 with correct polarity. The span signal is 60 mV for thermocouple input, 1V for 0-1V input, 10V for 0-10V input and 20mA for 0-20 mA input. Press for at least 4 seconds.
  • Page 46 Step 4: Calibrate gain gain cold junction cold junction Setup the equipment same as step 3. NOTE: The unit under calibration must powered at an NOTE: The unit under calibration must powered at an ambient temperature of 50C +/-3. Allow at least 20 minutes ambient temperature of 50C +/-3.

  • Page 47: Chapter 6 Specifications

    Chapter 6 Specifications Chapter 6 Specifications Power Power 90-264 VAC, 49-63 Hz, 10 VA, 5W maximum 11-26 VAC/VDC, 10 VA, 5W maximum Input Input Resolution: Resolution: 18 bits Sampling: Sampling: 5 times/second Maximum Rating: Maximum Rating: -2 VDC minimum, 12 VDC maximum (1 minute for mA input) Temperature Effect: Temperature Effect:...
  • Page 48 Characteristics: Input Input Accuracy Accuracy Type Range @ 25 C @ 25 C Impedance Impedance -120 C 1000 C -120 C 1000 C +/-2 C +/-2 C 2.2 M 2.2 M ( -184 F 1832 F ) ( -184 F 1832 F ) -200 C 1370 C -200 C 1370 C +/-2 C...
  • Page 49 Event Input Event Input Logic Low: Logic Low: -10V minimum, 0.8V maximum. Logic High: Logic High: 2V minimum, 10V maximum. Functions: Functions: Remote reset, remote lockout. Output 1 / Output 2 Output 1 / Output 2 Relay Rating: Relay Rating: 2A/240 VAC, life cycles 200,000 for resistive load.
  • Page 50 User Interface User Interface 4-digit LED Displays: 4-digit LED Displays: 0.4" (10mm), keypad: keypad: 4 keys Programming Port: Programming Port: For automatic setup, calibration and testing. Communication Port: Communication Port: Connection to PC for supervisory control. Limit Control: High Limit, Low limit and High/Low Limit Limit Control: programmable Digital Filter...
  • Page 51 Future Design Controls products. Future Design Controls shall not be liable for any damages or losses, whether direct, indirect, incidental, special, consequential or any other damages, costs or expenses excepting only the cost or expense of repair or replacement of Future Design Control products as described below.
  • Page 52 LIMIT FDC-L91 LIMIT FDC-L91 Microprocessor Based Limit Controller Microprocessor Based Limit Controller UM L91-Rev 8...

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