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PRECISION DIGITAL PD2-6262 Instruction Manual

Helios large display dual analog input rate/totalizer
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Helios Large Display Dual Analog Input Rate/Totalizer
Instruction Manual
 Large 1.80" Digits
 Dual-Line 6-Digit Display
 Readable from up to 100 Feet (30 Meters) Away
 Superluminous Sunlight Readable Display
 IP65 Rated Field Mountable Enclosure
 Operating Temperature Range of -40 to 65°C (-40 to 150°F)
 Dual Analog Inputs with Math Functions
 Rate, Total, and Grand Total for Each Input Channel
 Addition, Difference, Average, Multiplication, Division, Min, Max,
Weighted Average, Ratio, Concentration, & More
 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, and ±10 V Inputs
 Universal 85-265 VAC, or 12-24 VDC Input Power Models
 Isolated 24 VDC Transmitter Power Supply
 32-Point, Square Root, or Exponential Linearization
 2 or 4 Relays + Isolated 4-20 mA Output Options
 Onboard USB & RS-485 Serial Communication Options
 Modbus
®
RTU Communication Protocol Standard
 Program the Meter from a PC with onboard USB and MeterView Pro
Precision Digital Corporation
233 South Street • Hopkinton MA 01748 USA
Tel (800) 343-1001 • Fax (508) 655-8990
USB Install
Flow Rate/Totalizer
www.predig.com

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  • Page 1  Onboard USB & RS-485 Serial Communication Options  Modbus ® RTU Communication Protocol Standard  Program the Meter from a PC with onboard USB and MeterView Pro Precision Digital Corporation 233 South Street • Hopkinton MA 01748 USA Tel (800) 343-1001 • Fax (508) 655-8990 www.predig.com...
  • Page 2 Precision Digital Corporation warrants this product against defects in material or workmanship for the specified period under “Specifications” from the date of shipment from the factory. Precision Digital’s liability under this limited warranty shall not exceed the purchase value, repair, or replacement of the defective unit.

  • Page 3: Table Of Contents

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Table of Contents Table of Contents ............ 3 Relay Action for Loss of 4-20 mA Input (Loop Break) ................38 Table of Figures ............4 Relay and Alarm Operation Diagrams ....... 38 Introduction .............

  • Page 4: Table Of Figures

    A or B, or math result channel C. Three of the programming buttons can be set for custom operation. A fully loaded Helios PD2-6262 dual-input rate/totalizer comes with four (4) SPDT relays, a 4-20 mA output, two 24 VDC power supplies, five (5) digital inputs and four (4) digital outputs, and RS485 serial communications.

  • Page 5: Ordering Information

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Ordering Information Standard Models 85-265 VAC Model 12-24 VDC Model Options Installed PD2-6262-6H0 PD2-6262-7H0 No Options PD2-6262-6H7 PD2-6262-7H7 4 relays & 4-20 mA output Accessories Model Description PDA1011 Dual 4-20 mA expansion module...

  • Page 6: Dual Process Input

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Terminals P+ & P-: 24 VDC  10%. 12-24 Isolated Math Name Function Setting Transmitter Functi VDC powered models selectable for 24, 10, Addition (A+B+P)*F Sunm Power or 5 VDC supply (internal P+/P- switch).

  • Page 7: Dual Rate/Totalizer

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Signal Input Total Linear, square root, or programmable Program total A or B total reset for Conditioning Overflow exponent automatic with 0.1 second delay and Override set point 1 for 999,999...

  • Page 8: Isolated 4-20 Ma Transmitter Output

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Relay External 35 VDC maximum Automatic (non-latching) and/or Operation Loop Power manual reset Supply Latching (requires manual Output Loop Minimu Power supply Maximum acknowledge) with/without clear Resistance 10  700 ...

  • Page 9: Safety Information

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Safety Information Caution: Read complete instructions Warning: Risk of electric shock or prior to installation and operation of the personal injury. meter. Hazardous voltages exist within enclosure. Installation and service should be performed only by trained service personnel.

  • Page 10: Wall Mounting Instructions

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Wall Mounting Instructions The meter can be mounted to any wall using the four provided mounting holes. Note that the bottom mounting holes are located underneath the front door panel. To mount the meter to a wall, follow these instructions.

  • Page 11: Pipe Mounting Instructions

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Pipe Mounting Instructions The meter can also be mounted to a pipe using the optional pipe mounting kit (PDA6260). This kit includes two mounting plates, two U-bolts, and the necessary nuts and bolts. To mount the meter to a pipe using the pipe mounting kit accessory, follow these instructions.

  • Page 12: Transmitter Supply Voltage Selection (P+, P-)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Transmitter Supply Voltage Selection (P+, P-) All meters, including models equipped with the 12-24 VDC power option, are shipped from the factory configured to provide 24 VDC power for the transmitter or sensor.

  • Page 13: Connectors Labeling

    The connectors’ label, affixed to the inside of the lower door panel, shows the location of all connectors available with requested configuration. Do not connect any equipment other than Precision Digital’s expansion modules, cables, or meters to the RJ45 M-LINK connector.

  • Page 14: Signal Connections

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Signal Connections Signal connections are made to a nine-terminal connector labeled SIGNAL on Figure 7. The COM (common) terminals are the return for the 4-20 mA and the 10 V input signals. The two COM terminals connect to the same common return, and are not isolated.

  • Page 15: Modbus Rtu Serial Communications

    RC Networks Available from Precision Digital Use a diode with a reverse breakdown voltage two to three times the circuit RC networks are available from Precision Digital and voltage and forward current at least as should be applied to each relay contact switching an large as the load current.

  • Page 16: Rs485 Output Connections

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 RS485 Output Connections ® An RS-485 connector is provided for the use of advanced Modbus serial communications. This connector converts the serial output of the meter to balanced, full or half-duplex RS-485 signals. It has a...

  • Page 17: Figure 16. Rs-485 Two-Wire Multi-Drop Wiring

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Figure 16. RS-485 Two-Wire Multi-Drop Wiring Notes: 1. Termination resistors are optional and values depend on the cable length and characteristic impedance. Consult the cable manufacturer for recommendations. 2. Refer to RS-232 to RS-485 Converter documentation for further details.

  • Page 18: Digital I/O Connections

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Digital I/O Connections Digital inputs and outputs are provides in order to expand the functionality of the meter. Digital inputs are made via a push button or switch connection to the appropriate digital input connector block and the +5 VDC block.

  • Page 19: 4-20 Ma Output Connections

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual 4-20 mA Output Connections Connections for the 4-20 mA transmitter output are made to the connector terminals labeled MA OUT. The 4-20 mA output may be powered internally or from an external power supply.

  • Page 20: Setup And Programming

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Setup and Programming The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection. The calibration equipment is certified to NIST standards.

  • Page 21: Programming Buttons And Status Led Indicators

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Programming Buttons and Status LED Indicators The meter can be programmed using the buttons located behind the front door panel. Use the Menu button to enter or exit Programming Mode, the Up Arrow button to cycle through menu options, and the Enter button to select the menu item or option you want.

  • Page 22: Meterview ® Pro Software

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 ® MeterView Pro Software The meter can also be programmed using the PC-based MeterView Pro software included with the meter. This software is can be installed on any Microsoft® Windows® (2000/XP/Vista/7/8/10) computer by connecting the meter’s onboard USB.

  • Page 23: Display Functions & Messages

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Display Functions & Messages The meter displays various functions and messages during setup, programming, and operation. The following table shows the main menu functions and messages in the order they appear in the menu.
  • Page 24 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Display Parameter Action/Setting Description T dly Program automatic reset time delay Time delay dsplay Display Enter the Display menu Line 1 Display Line 1 Press Enter to assign the display line 1 parameter (default: PV)
  • Page 25 PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Display Parameter Action/Setting Description D tab Display total A and B Alternate display of channel A total and channel B total D TAbC Alternate display of channel A total, channel B total, and math...
  • Page 26 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Display Parameter Action/Setting Description Out 1 Program output 1 value (e.g. 4.000 mA) Output 1 Dis 2 Display 2 Program display 2 value Out 2 Output 2 Program output 2 value (e.g. 20.000 mA)

  • Page 27: Main Menu

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Main Menu The main menu consists of the most commonly used functions: Setup, Reset, Control, and Password.  Press Menu button to enter Programming Mode then press the Up arrow button to scroll main menu.

  • Page 28: Setting Up The Meter (Setup)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Setting up the Meter (setup) The Setup menu is used to select: 1. Input signal the meter will accept for channel A and channel B 2. Units for A & B rate, total & grand total, and C 3.

  • Page 29: Setting The Input Signal (Input)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Setting the Input Signal (Input) Enter the Input menu to set up the meter to display current (mA) or voltage (volt) inputs for channel A and channel B. The current input is capable of accepting any signal from 0 to 20 mA. Select current input to accept 0-20 mA or 4-20 mA signals.

  • Page 30: Setting The Rate, Total, & Grand Total Units/Tags (Units)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Setting the Rate, Total, & Grand Total Units/Tags (units) Enter the channel A and B rate, total, grand total, and math channel C units (or custom tags) that will be displayed if alternating units is selected in the units menu, or d unit is selected as the lower display parameter.

  • Page 31: Programming The Rate/Totalizer (Prog)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Programming the Rate/Totalizer (prog) It is very important to read the following information, before proceeding to program the meter:  The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection.
  • Page 32 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Scaling the Meter without a Signal Source The process inputs (4-20 mA, 10 VDC) can be scaled to display the process variables in engineering units. A signal source is not needed to scale the meter; simply program the inputs and corresponding display values.
  • Page 33 PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Calibrating the Meter with External Source ( Note: To scale the meter without a signal source refer to Scaling the Meter without a Signal Source, page 32. Warm up the meter for at least 15 minutes before performing calibration to ensure specified accuracy.
  • Page 34 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Total and Grand Total Setup The time base and total conversion factor, and grand total conversion factor for input channels A and B are located in the Totalizer Setup menu.

  • Page 35: Setting The Display Parameter & Intensity (Dsplay)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Setting the Display Parameter & Intensity (dsplay) The main display (line 1) can be programmed to display: 1. Ch-A rate (D Ch-A) 2. Ch-B rate (D Ch-B) 3. Ch-C math channel (D Ch-C) 4.

  • Page 36: Setting The Relay Operation (Relay)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Setting the Relay Operation (relay) This menu is used to set up the operation of the relays. During setup, the relays do not follow the input and they will remain in the state found prior to entering the Relay menu.

  • Page 37: Setting The Relay Assignment (Assign)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Setting the Relay Assignment (asSign) Setting the Relay Action Operation of the relays is programmed in the Action menu. The relays may be set up for any of the following modes of operation: 1.

  • Page 38: Setting Fail-Safe Operation

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Setting Fail-Safe Operation In fail-safe mode of operation, the relay coil is energized when the process variable is within safe limits and the relay coil is de-energized when the alarm condition exists. The fail-safe operation is set independently for each relay.

  • Page 39: High Alarm With Fail-Safe Operation (Set > Reset)39

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual High Alarm with Fail-Safe Operation Low Alarm with Fail-Safe Operation (Set > Reset) (Set < Reset) Note: Relay coil is energized in non-alarm condition. Note: Relay coil is energized in non-alarm condition.

  • Page 40: Relay Sampling Operation

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Relay Sampling Operation Input Reset Sample Sample Sample Time Time Time Relay When the signal crosses the set point, the relay trips and the sample time starts. After the sample time has elapsed, the relay resets.

  • Page 41: Relay Operation Details

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Relay Operation Details Overview The relay capabilities of the meter expand its usefulness beyond simple indication to provide users with alarm and control functions. These capabilities include front panel alarm status LEDs as well as either 2 or 4 internal relays.

  • Page 42: Latching And Non-Latching Relay Operation

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Latching and Non-Latching Relay Operation Relay terminology for following tables The relays can be set up for latching (manual reset) or non-latching (automatic reset) operation. Terminology Relay Condition Alarm (Tripped) The On and Off terminology does not refer to the status of the relay’s coil, which depends on the fail-safe mode...

  • Page 43: Acknowledging Relays

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Acknowledging Relays There are two ways to acknowledge relays programmed for manual reset: 1. Via the programmable front panel function keys F1-F3 (Default: F3 assigned to ACK). 2. Remotely via a normally open pushbutton wired across one of the digital inputs and the +5 V terminals on the digital I/O terminal, or using the F4 digital input, which is triggered with a contact closure to COM, or with an active low signal (see page 18).
  • Page 44 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Application #2: Pump Alternation Using Relays 3 & 4 1. Relays 1 and 2 are set up for low Set and Reset Point Programming and high alarm indication. Relay Set Point...

  • Page 45: Setting Up The Interlock Relay (Force On) Feature

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Setting up the Interlock Relay (Force On) Feature Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature: 1. Access the Setup – Relay – Action menu and set the action to off.

  • Page 46: Scaling The 4-20 Ma Analog Output (Aout)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Scaling the 4-20 mA Analog Output (Aout) The 4-20 mA analog outputs can be scaled to provide a 4-20 mA signal for any display range selected. To select the channel and source assignments the analog outputs are assigned to, see Analog Output Source on page 56.

  • Page 47: Setting Up The Password (Pass)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Setting up the Password (pass) The Password menu is used for programming three levels of security to prevent unauthorized changes to the programmed parameter settings. Pass 1: Allows use of function keys and digital inputs...

  • Page 48: Making Changes To A Password Protected Meter

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Making Changes to a Password Protected Meter If the meter is password protected, the meter will display the message Locd (Locked) when the Menu button is pressed. Press the Enter button while the message is being displayed and enter the correct password to gain access to the menu.

  • Page 49: Advanced Features Menu

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Advanced Features Menu To simplify the setup process, functions not needed for most applications are located in the Advanced Features menu. Press and hold the Menu button for three seconds to access the advanced features of the meter.
  • Page 50 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Display Parameter Action/Setting Linear Linear Set meter for linear function and select number of linearization points No PtS Number of points Set the number of linearization points (default: 2) Square...

  • Page 51: Noise Filter (Filter)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Display Parameter Action/Setting Calib Calibrate Calibrate 4-20 mA output (internal reference source used for scaling the output) 4 mA 4 mA output Enter mA output value read by milliamp meter with at least 0.001...

  • Page 52: Rounding Feature (Round)

    RS-232, or RS-485 option is required; see Ordering Information on page 5 for details. Do not connect any equipment other than Precision Digital’s expansion modules, cables, or meters to the RJ45 M-LINK connector. Otherwise damage will occur to the equipment and the meter.

  • Page 53: Select Menu (Select)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Select Menu (SElect) The Select menu is used to select the signal input conditioning function applied to the inputs (linear, square root, or programmable exponent), math function for A & B, constants, low-flow cutoff, total count direction (up or down from a preset amount), and analog output programming.

  • Page 54: Math Function (Math)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Prog E Programmable Exponent Linearization ( The programmable exponent function is used to calculate open-channel flow measured with a level transmitter in weirs and flumes. The flow rate is proportional to the head height. Scale the meter so that the low input signal (e.g.

  • Page 55: Math Constants (Const)

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Math Constants (Const) The Math Constants menu is used to set the constants used in channel C math. The math functions include input channel A and B, as well as the adder constant P, and factor constant F.

  • Page 56: Programmable Function Keys User Menu (User)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Analog Output Source The analog output source can be based on either of the input channels (Ch-A, Ch-B), the math channel (Ch-C), maximum stored value of either input channel (Hi-A, Hi-B), minimum stored value of either input channel (Lo-A, Lo-B), relay set points, or the Modbus input.
  • Page 57 PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Function Keys & Digital I/O Available Settings Display Description Display Description Ln2 Hi Rst Hi Display maximum channel B display Reset the stored maximum display value on line 2 values for all channels...

  • Page 58: Internal Source Calibration (Ical)

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Internal Source Calibration (ICAL) The meter is factory calibrated prior to shipment to read in milliamps and volts depending on the input selection. The calibration equipment is certified to NIST standards.

  • Page 59: Meter Operation

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Meter Operation The meter is capable of accepting two input channels (A and B) of either current (0-20 mA, 4-20 mA) or voltage signals (0-5 V, 1-5 V, 0-10 V,  10 V) and displaying these signals in engineering units from -99999 to 999999 (e.g.

  • Page 60: Maximum/Minimum Readings

    Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Maximum/Minimum Readings The max & min readings (peak & valley) reached by the process can be displayed either continuously or momentary: 1. Display briefly by assigning to the F1-F3 function keys or to the digital inputs in the User menu.

  • Page 61: Reset Meter To Factory Defaults

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Reset Meter to Factory Defaults When the parameters have been changed in a way that is difficult to determine what’s happening, it might be better to start the setup process from the factory defaults.
  • Page 62 Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual PD2-6262 Parameter Display Default Setting Parameter Display Default Setting T CF u-rang Total conversion factor, 1.000 Underrange output 3.000 mA Ch-A break Loop break output 3.000 mA Gt CF 1.000 Grand total conversion Maximum output 23.000 mA...

  • Page 63: Troubleshooting Tips

    PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual Troubleshooting Tips Symptom Check/Action No display at all Check power at power connector Not able to change setup or Meter is password-protected, enter correct six-digit password to unlock programming, Locd is displayed...
  • Page 64 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual PD2-6262 How to Contact Precision Digital  For Technical Support please Call: (800) 610-5239 or (508) 655-7300 Fax: (508) 655-8990 Email: support@predig.com  For Sales Support or to place an order please...

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