Dwyer Instruments Series APM User manual

DWYER INSTRUMENTS, INC.
PO Box 373 • Michigan City IN 46360 USA
Tel [phone] • Fax [phone]
www.dwyer-inst.com
Analog Panel Meter
Series APM
Instruction Manual
0-20 mA, 4-20 mA, 0-5 V, 1-5 V, 10 V Inputs
NEMA 4X, IP65 Front
Universal 85-265 VAC, or 12/24 VDC Input Power Models
Large Dual-Line 6-Digit Display, 0.60" & 0.46"
Dual-Scale for Level Applications – Single Input
Isolated 24 VDC @ 200 mA Transmitter Power Supply
Signal Input Conditioning for Flow & Round Horizontal Tanks
Programmable Displays & Function Keys
Rate Displayed as Units per Second, Minute, Hour, or Day
Total, Grand Total or Non-Resettable Grand Total
9-Digit Totalizer with Total Overflow Feature
32-Point Linearization, Square Root, or Programmable Exponent
Multi-Pump Alternation Control
2 or 4 Relays + Isolated 4-20 mA Output for Rate or Total
External 4-Relays & Digital I/O Expansion Modules
RS-232 & RS-422/485 Serial Communication Options
Modbus®RTU Communication Protocol Standard
Tare Function
Bulletin: L-APM

Analog Panel Meter Instruction Manual
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Disclaimer
The information contained in this document is subject to change
without notice. Dwyer Instruments, Inc. makes no representations or
warranties with respect to the contents hereof; and specifically dis-
claims any implied warranties of merchantability or fitness for a par-
ticular purpose.
!
CAUTION: Read complete
instructions prior to instal-
lation and operation of the
meter.
WARNING: Risk of
electric shock or
personal injury.
Warning
This product is not recommended for life support applications or ap-
plications where malfunctioning could result in personal injury or
property loss. Anyone using this product for such applications does
so at his/her own risk. Dwyer Instruments, Inc. shall not be held liable
for damages resulting from such improper use.
Limited Warranty
Dwyer Instruments, Inc. warrants this product against defects in ma-
terial or workmanship for the specified period under “Specifications”
from the date of shipment from the factory. Dwyer Instruments, Inc.’s
liability under this limited warranty shall not exceed the purchase val-
ue, repair, or replacement of the defective unit.
Registered Trademarks
All trademarks mentioned in this document are the property of their re-
spective owners.
© 2008-2011 Dwyer Instruments, Inc. All rights reserved.
www.dwyer-inst.com

Analog Panel Meter Instruction Manual
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Table of Contents
INTRODUCTION ------------------------------------------------------------- 7
ORDERING INFORMATION ---------------------------------------------- 7
SPECIFICATIONS ----------------------------------------------------------- 8
General-------------------------------------------------------------------------------8
Process Input ----------------------------------------------------------------------9
Rate/Totalizer -------------------------------------------------------------------- 10
Relays ------------------------------------------------------------------------------ 11
Isolated 4-20 mA Transmitter Output ------------------------------------ 12
Modbus®RTU Serial Communications---------------------------------- 13
PMA-12 Digital Input & Output Expansion Module------------------ 13
COMPLIANCE INFORMATION ---------------------------------------- 14
Safety ------------------------------------------------------------------------------- 14
Electromagnetic Compatibility--------------------------------------------- 14
SAFETY INFORMATION ------------------------------------------------ 15
INSTALLATION ------------------------------------------------------------ 16
Unpacking------------------------------------------------------------------------- 16
Panel Mounting Instructions------------------------------------------------ 16
Configuration for 12 or 24 VDC Power Option------------------------ 18
Transmitter Supply Voltage Selection (P+, P-) ----------------------- 19
Connections---------------------------------------------------------------------- 19
Connectors Labeling--------------------------------------------------------- 20
Power Connections ---------------------------------------------------------- 20
Signal Connections ---------------------------------------------------------- 21
Modbus®RTU Serial Communications --------------------------------- 22
Relay Connections ----------------------------------------------------------- 22
Switching Inductive Loads-------------------------------------------------- 23
4-20 mA Output Connections---------------------------------------------- 24
Analog Output Transmitter Power Supply------------------------------ 24
External Relay & Digital I/O Connections ------------------------------ 25
Interlock Relay Feature ----------------------------------------------------- 26
SETUP AND PROGRAMMING----------------------------------------- 27
Front Panel Buttons and Status LED Indicators --------------------- 28
Display Functions and Messages----------------------------------------- 29
Main Menu ------------------------------------------------------------------------ 33
Setting Numeric Values ------------------------------------------------------ 34

Analog Panel Meter Instruction Manual
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Reset Menu (reset) ------------------------------------------------------------ 34
Control Menu (Contrl)-------------------------------------------------------- 34
Setting Up the Rate/Totalizer Meter (setup) --------------------------- 35
Setting the Input Signal (input) ------------------------------------------ 36
Setting the Totalizer Features (total) ---------------------------------- 36
Dual-Scale for Level Application------------------------------------------ 37
Setting the Decimal Point (dEc pt) -------------------------------------- 38
Programming the Rate/Totalizer (prog) -------------------------------- 39
Multi-Point Calibration & Scaling-------------------------------------- 40
Panel Meter Pro Software ---------------------------------------------- 40
Scaling the Meter (SCALE) ---------------------------------------------- 41
Time Base, Total Conversion Factor & Total Reset-------------- 43
Calibrating the Meter with External Source (Cal)----------------- 44
Setting the Display Parameter & Intensity (dsplay) ----------------- 45
Display Setup Menu --------------------------------------------------------- 46
Character Set for Engineering Units Display (d unit)-------------- 47
Setting the Relay Operation (relay) ------------------------------------- 48
Relay Assignment (Assign) ----------------------------------------------- 49
Setting the Relay Action ---------------------------------------------------- 50
Programming Set and Reset Points ------------------------------------- 51
Setting Fail-Safe Operation ------------------------------------------------ 51
Programming Time Delay -------------------------------------------------- 51
Relay Action for Loss of 4-20 mA Input (Loop Break)--------------- 51
Relay and Alarm Operation Diagrams ----------------------------------- 52
High Alarm Operation (Set > Reset) ------------------------------------- 52
Low Alarm Operation (Set < Reset)-------------------------------------- 53
High Alarm with Fail-Safe Operation (Set > Reset) ------------------ 54
Low Alarm with Fail-Safe Operation (Set < Reset)------------------- 55
Pump Alternation Control Operation------------------------------------- 56
Rate Relay Sampling Operation ------------------------------------------ 57
Total Relay Sampling Operation------------------------------------------ 57
Signal Loss or Loop Break Relay Operation--------------------------- 58
Time Delay Operation ------------------------------------------------------- 59
Relay Operation Details ------------------------------------------------------ 60
Overview------------------------------------------------------------------------ 60
Relays Auto Initialization---------------------------------------------------- 60
Fail-Safe Operation ---------------------------------------------------------- 60
Front Panel LEDs------------------------------------------------------------- 61
Latching and Non-Latching Relay Operation -------------------------- 61
Non-Latching Relay (Auto)------------------------------------------------- 62
Non-Latching Relay (A-nman) --------------------------------------------- 62
Latching Relay (LatcH) ----------------------------------------------------- 62
Latching Relay (Lt-Clr)---------------------------------------------------- 63

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Acknowledging Relays ------------------------------------------------------ 63
Pump Alternation Control Applications (Altern) --------------------- 64
Setting Up the Interlock Relay (Force On) Feature ------------------ 67
Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 68
Setting Up the Password (pass) ------------------------------------------- 69
Protecting or Locking the Meter------------------------------------------- 69
Total Reset Password & Non-Resettable Total ----------------------- 70
Making Changes to a Password Protected Meter-------------------- 71
Disabling Password Protection-------------------------------------------- 71
Advanced Features Menu---------------------------------------------------- 72
Advanced Features Menu & Display Messages ---------------------- 73
Noise Filter (filter) -------------------------------------------------------- 76
Noise Filter Bypass (bypass)---------------------------------------------- 76
Modbus®RTU Serial Communications (serial)--------------------- 77
Select Menu (SElEct) ------------------------------------------------------- 78
Signal Input Conditioning (Functn) -------------------------------------- 78
Low-Flow Cutoff (CutofF) -------------------------------------------------- 81
Analog Output Programming (AoutPr)---------------------------------- 81
Programmable Function Keys User Menu (user)-------------------- 82
Tare (tare)--------------------------------------------------------------------- 83
Internal Source Calibration (ICAL) --------------------------------------- 83
Meter Copy Function (Copy) ----------------------------------------------- 86
METER OPERATION ----------------------------------------------------- 88
Front Panel Buttons Operation -------------------------------------------- 88
Function Keys Operation ---------------------------------------------------- 88
Maximum/Minimum Readings---------------------------------------------- 89
TROUBLESHOOTING---------------------------------------------------- 90
Diagnostics Menu (diag)----------------------------------------------------- 90
Determining Software Version -------------------------------------------- 90
Reset Meter to Factory Defaults ------------------------------------------- 91
Factory Defaults & User Settings----------------------------------------- 92
Troubleshooting Tips --------------------------------------------------------- 96
Alphabetical List of Display Functions & Messages --------------- 97

Analog Panel Meter Instruction Manual
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Table of Figures
Figure 1: 1/8 DIN Panel Cutout and Mounting................................... 16
Figure 2: Meter Dimensions - Side View............................................ 17
Figure 3: Meter Dimensions - Top View............................................. 17
Figure 4: Jumper Configuration for 12/24 VDC Power..................... 18
Figure 5: Transmitter Supply Voltage Selection............................... 19
Figure 6: Connector Labeling for Fully Loaded APM....................... 20
Figure 7: Power Connections............................................................. 20
Figure 8: Transmitters Powered by Internal Supply......................... 21
Figure 9: Transmitter Powered by Ext. Supply or Self-Powered..... 21
Figure 10: Voltage Input Connections ............................................... 22
Figure 11: Relay Connections ............................................................ 22
Figure 12: AC and DC Loads Protection ........................................... 23
Figure 13: Low Voltage DC Loads Protection................................... 23
Figure 14: 4-20 mA Output Connections ........................................... 24
Figure 15: Expansion Modules & DIN Rail Mounting Kit.................. 25
Figure 16: External Relays Module Connections ............................. 25
Figure 17: Digital I/O Module Connections ....................................... 26
Figure 18. Interlock Connection......................................................... 26
Figure 19: Acknowledge Relays w/Function Key or Digital Input ... 63
Figure 20: Meter Copy Connection .................................................... 86
Figure 21:1/8 DIN Panel Cutout Template ....................................... 105

Analog Panel Meter Instruction Manual
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INTRODUCTION
The APM is a multipurpose, easy to use rate/totalizer ideal for flow rate, total, and
control applications. It accepts current and voltage signals (e.g. 4-20 mA, 0-10 V).
Three of the front panel buttons can be custom-programmed for specific opera-
tion.
The basic model includes an isolated 24 VDC transmitter power supply that can
be used to power the input transmitter or other devices. An additional isolated
24 VDC power supply is included with the 4-20 mA output option.
A fully loaded APM rate/totalizer meter has the following: four SPDT relays, 4-20 mA
output, and two 24 VDC power supplies. The APM capabilities may be enhanced by
adding the following external expansion modules: four SPST relays (creating an
eight-relay rate/totalizer), two digital I/O modules with four inputs and four outputs
each, and RS-232 or RS-485 communication adapters.
The eight relays can be used for alarm indication or process control applications.
The 4-20 mA isolated output, Modbus®RTU serial communications, and digital I/O
options make the APM an excellent addition to any system.
ORDERING INFORMATION
85-265 VAC
Model
12/24 VDC
Model Options Installed
APM-100 APM-200 No options
APM-101 APM-201 4-20 mA output
APM-120 APM-220 2 relays
APM-121 APM-221 2 relays & 4-20 mA output
APM-140 APM-240 4 relays
APM-141 APM-241 4 relays & 4-20 mA output
Accessories
Model Description
PMA-01 RS-232 serial adapter
PMA-02 Meter copy cable
PMA-03 RS-422/485 serial adapter
PMA-04 RS-232 to RS-422/485 isolated converter
PMA-05 RS-232 to RS-422/485 non-isolated converter
PMA-06 USB to RS-232 non-isolated converter
PMA-07 USB to RS-422/485 isolated converter
PMA-08 USB to RS-422/485 non-isolated converter
PMA-09 Suppressor (snubber): 0.01 µF/470 , 250 VAC
PMA-10 DIN rail mounting kit for two expansion modules
PMA-11 4 SPST (Form A) relays
PMA-12 4 digital inputs & 4 digital outputs (2 may be connected)

Analog Panel Meter Instruction Manual
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SPECIFICATIONS
Except where noted all specifications apply to operation at +77°F (+25°C).
General
DISPLAY Main display: 0.6" (15 mm) high, red LEDs
Second display: 0.46" (12 mm) high, red LEDs
6 digits: each (-99999 to 999999), with lead zero blanking.
DISPLAY
INTENSITY
Eight user selectable intensity levels.
DISPLAY
UPDATE RATE
5/second (200 ms).
OVERRANGE Display flashes 999999.
UNDERRANGE Display flashes -99999.
DISPLAY
ASSIGNMENT
The main (Big) and small (Little) displays may be assigned
to rate, total, grand total, alternate rate & total, max/min,
units (small display only), set points, and Modbus®input.
PROGRAMMING
METHODS
Four front panel buttons, digital inputs, PC with Panel Meter
Pro software, or cloning using Copy function.
NOISE FILTER Programmable from 2 to 199 (0 will disable filter).
FILTER BYPASS Programmable from 0.1 to 99.9% of calibrated span.
RECALIBRATION All ranges are calibrated at the factory. Recalibration is
recommended at least every 12 months.
MAX/MIN
DISPLAY
Max/min readings reached by the process are stored until
reset by the user or until power to the meter is turned off.
PASSWORD Three programmable passwords restrict modification of
programmed settings and two prevent resetting the totals.
Pass 1: Allows use of function keys and digital inputs.
Pass 2: Allows use of function keys, digital inputs and editing set/reset points.
Pass 3: Restricts all programming, function keys, and digital inputs.
Total: Prevents resetting the total manually.
Gtotal: Prevents resetting the grand total manually.
NON-VOLATILE
MEMORY
All programmed settings are stored in non-volatile memory
for a minimum of ten years if power is lost.
POWER
OPTIONS
85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max
or jumper selectable 12/24 VDC 10%, 15 W max.
FUSE Required external fuse: UL Recognized, 5 A max, slow
blow; up to 6 meters may share one 5 A fuse.
ISOLATED
TRANSMITTER
POWER SUPPLY
Terminals P+ & P-: 24 VDC 5% @ 200 mA max (standard),
(12/24 VDC powered models rated @ 100 mA max).
5 or 10 VDC @ 50 mA max, selectable with internal jumper J4.

Analog Panel Meter Instruction Manual
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NORMAL MODE
REJECTION
Greater than 60 dB at 50/60 Hz.
ISOLATION 4 kV input/output-to-power line.
500 V input-to-output or output-to-P+ supply.
OVERVOLTAGE
CATEGORY
Installation Overvoltage Category II:
Local level with smaller transient overvoltages than Installa-
tion Overvoltage Category III.
ENVIRONMENTAL Operating temperature range: -40 to 149°F (-40 to 65°C).
Storage temperature range: -40 to 185°F (-40 to 85°C).
Relative humidity: 0 to 90% non-condensing.
CONNECTIONS Removable screw terminal blocks accept 12 to 22 AWG
wire, RJ45 for external relays, digital I/O, and serial com-
munication adapters.
ENCLOSURE 1/8 DIN, high impact plastic, UL 94V-0, color: black.
MOUNTING 1/8 DIN panel cutout required:
3.622" x 1.772" (92 mm x 45 mm)
Two panel mounting bracket assemblies are provided.
TIGHTENING
TORQUE
Screw terminal connectors: 5 lb-in (0.56 Nm).
OVERALL
DIMENSIONS
4.68" x 2.45" x 5.64" (119 mm x 62 mm x 143 mm)
(W x H x D).
WEIGHT 9.5 oz (269 g).
WARRANTY 1 year parts & labor.
Process Input
INPUTS Field selectable:
0-20, 4-20 mA, 10 V (0-5, 1-5, 0-10 V), Modbus®PV (Slave)
ACCURACY ±0.03% of calibrated span ±1 count,
square root & programmable exponent accuracy range:
10-100% of calibrated span.
TEMPERATURE
DRIFT
0.003% of calibrated span/°F max from 32 to 149°F
(0.005% from 0 to 65°C), 0.006% of calibrated span/°F max
from -40 to 32°F (0.01% from -40 to 0°C)
SIGNAL INPUT
CONDITIONING
Linear, square root, programmable exponent, or round
horizontal tank volume calculation.
MULTI-POINT
LINEARIZATION
2 to 32 points.
PROGRAMMA-
BLE EXPONENT
1.0001 to 2.9999.
LOW-FLOW
CUTOFF
0-999999 (0 disables cutoff function).

Analog Panel Meter Instruction Manual
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DECIMAL POINT Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d,or dddddd.
CALIBRATION
RANGE
Input
Range
Minimum Span
Input 1 & Input 2
4-20 mA 0.15 mA
10 V 0.10 V
An Error message will appear if the input 1 and input 2
signals are too close together.
INPUT
IMPEDANCE
Voltage ranges: greater than 1 M.
Current ranges: 50 - 100 (depending on resettable fuse impedance).
INPUT
OVERLOAD
Current input protected by resettable fuse, 30 VDC max.
Fuse resets automatically after fault is removed.
Rate/Totalizer
DISPLAY
ASSIGNMENT
The main (Big) and small (Little) displays may be assigned
to rate, total, grand total, alternate R & T, units, and set
point.
RATE DISPLAY
INDICATION
-99999 to 999999, lead zero blanking. “R” LED illuminates
while displaying rate.
TOTAL DISPLAY
& TOTAL
OVERFLOW
0 to 999,999; automatic lead zero blanking. “T” LED is illumi-
nated while displaying total or grand total.
Up to 999,999,999 with total-overflow feature. “oF” is dis-
played to the left of total overflow and ▲LED is illuminated.
ALTERNATING
DISPLAY
Either display may be programmed to alternate between
rate and total or rate and grand total every 10 seconds.
TOTAL
DECIMAL POINT
Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d,or dddddd
Total decimal point is independent of rate decimal point.
TOTALIZER Calculates total based on rate and field programmable mul-
tiplier to display total in engineering units. Time base must
be selected according to the time units in which the rate is
displayed.
TOTALIZER
ROLLOVER
Totalizer rolls over when display exceeds 999,999,999.
Relay status reflects display.
TOTAL
OVERFLOW
OVERRIDE
Program total reset for automatic with 0.1 second delay and
set point 1 for 999,999.
TOTALIZER
PRESETS
Up to eight, user selectable under setup menu. Any set
point can be assigned to total and may be programmed
anywhere in the range of the meter for total alarm indica-
tion.