Dwyer Instruments APM-100 User manual

Bulletin: L-APM
DWYER INSTRUMENTS, INC.
PO Box 373 • Michigan City IN 46360 USA
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
Series APM Analog Panel Meter
Instruction Manual
•0-20 mA, 4-20 mA, 0-5 V, 1-5 V, ±10 V Inputs
•NEMA 4X, IP65 Front
•Input Power Options Include 85-265 VAC or 12-24 VDC
•Large Dual-Line 6-Digit Display, 0.60" & 0.46"
•Sunlight Readable Display Models
•Isolated 24 VDC Transmitter Power Supply
•Signal Input Conditioning for Flow
•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 Exponential Linearization
•Multi-Pump Alternation Control
•2 or 4 Relays + Isolated 4-20 mA Output for Rate/Total/Grand Total
•External 4-Relay & Digital I/O Expansion Modules
•RS-232 & RS-485 Serial Communication Options
•Modbus®RTU Communication Protocol Standard
•Free USB Programming Software & Cable

Analog Panel Meter Instruction Manual
2
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
disclaims any implied warranties of merchantability or fitness for a
particular purpose.
CAUTION: Read complete
instructions prior to
installation and operation
of the meter.
WARNING: Risk of
electric shock or
personal injury.
Warning
This product is not recommended for life support
applications or applications 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
material 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 value, repair, or replacement of the defective
unit.
Registered Trademarks
All trademarks mentioned in this document are the property of their
respective owners.
© 2008-2019 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 -------------------------------------------------------------------- 10
Rate/Totalizer -------------------------------------------------------------------- 11
Relays ------------------------------------------------------------------------------ 12
Isolated 4-20 mA Transmitter Output ------------------------------------ 13
Modbus®RTU Serial Communications---------------------------------- 13
PMA-12 Digital Input & Output Expansion Module------------------ 14
Panel Meter Pro Software---------------------------------------------------- 14
COMPLIANCE INFORMATION ----------------------------------------15
Safety ------------------------------------------------------------------------------- 15
Electromagnetic Compatibility--------------------------------------------- 15
SAFETY INFORMATION ------------------------------------------------16
INSTALLATION ------------------------------------------------------------17
Unpacking------------------------------------------------------------------------- 17
Panel Mounting Instructions------------------------------------------------ 17
Mounting Dimensions ------------------------------------------------------- 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
RC Networks Available from Dwyer Instruments, Inc.----------- 23
F4 Digital Input Connections----------------------------------------------- 24
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
Panel Meter Pro Software---------------------------------------------------- 28
Panel Meter Pro Installation ----------------------------------------------- 28
Front Panel Buttons and Status LED Indicators --------------------- 30
Display Functions and Messages----------------------------------------- 31

Analog Panel Meter Instruction Manual
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Main Menu ------------------------------------------------------------------------ 35
Setting Numeric Values ------------------------------------------------------ 36
Setting Up the Rate/Totalizer Meter (setup) --------------------------- 37
Setting the Input Signal (Input) ------------------------------------------ 38
Setting the Totalizer Features (total) ---------------------------------- 38
Setting the Input Units or Custom Tags (units)---------------------- 39
Setting the Decimal Point (dEc pt) -------------------------------------- 40
Programming the Rate/Totalizer (prog) -------------------------------- 40
Multi-Point Calibration & Scaling-------------------------------------- 41
Input Calibration Method (InCAL) ------------------------------------- 41
Scaling the Meter (SCALE) ---------------------------------------------- 42
Calibrating the Meter with External Source (Cal)----------------- 43
Time Base, Total Conversion Factor & Total Reset-------------- 44
Setting the Display Parameter & Intensity (dsplay) ----------------- 45
Display Setup Menu --------------------------------------------------------- 46
Setting the Relay Operation (relay) ------------------------------------ 47
Relay Assignment (Assign) ----------------------------------------------- 48
Setting the Relay Action ---------------------------------------------------- 49
Programming Set and Reset Points ------------------------------------- 50
Setting Fail-Safe Operation ------------------------------------------------ 50
Programming Time Delay -------------------------------------------------- 50
Relay Action for Loss of 4-20 mA Input (Loop Break)--------------- 50
Relay and Alarm Operation Diagrams----------------------------------- 51
High Alarm Operation (Set > Reset)------------------------------------- 51
Low Alarm Operation (Set < Reset)-------------------------------------- 52
High Alarm with Fail-Safe Operation (Set > Reset) ------------------ 53
Low Alarm with Fail-Safe Operation (Set < Reset)------------------- 54
Pump Alternation Control Operation------------------------------------- 55
Rate Relay Sampling Operation ------------------------------------------ 56
Total Relay Sampling Operation------------------------------------------ 56
Signal Loss or Loop Break Relay Operation--------------------------- 57
Time Delay Operation ------------------------------------------------------- 58
Relay Operation Details ------------------------------------------------------ 59
Overview------------------------------------------------------------------------ 59
Relays Auto Initialization---------------------------------------------------- 59
Fail-Safe Operation ---------------------------------------------------------- 59
Front Panel LEDs------------------------------------------------------------- 60
Latching and Non-Latching Relay Operation -------------------------- 60
Non-Latching Relay (Auto)------------------------------------------------- 61
Non-Latching Relay (A-nman) --------------------------------------------- 61
Latching Relay (LatcH) ----------------------------------------------------- 61
Latching Relay (Lt-Clr)---------------------------------------------------- 62
Acknowledging Relays ------------------------------------------------------ 62

Analog Panel Meter Instruction Manual
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Pump Alternation Control Applications (Altern) --------------------- 63
Setting Up the Interlock Relay (Force On) Feature ------------------ 66
Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 67
Reset Menu (reset) ------------------------------------------------------------ 68
Control Menu (Contrl)-------------------------------------------------------- 68
Setting Up the Password (pass) ------------------------------------------- 68
Protecting or Locking the Meter------------------------------------------- 69
Total Reset Password & Non-Resettable Total ----------------------- 69
Making Changes to a Password Protected Meter-------------------- 70
Disabling Password Protection-------------------------------------------- 70
Advanced Features Menu---------------------------------------------------- 71
Advanced Features Menu & Display Messages ---------------------- 71
Noise Filter (filter) -------------------------------------------------------- 74
Noise Filter Bypass (bypass)---------------------------------------------- 74
Rounding Feature (round) ------------------------------------------------- 74
Modbus RTU Serial Communications (serial) ---------------------- 75
Select Menu (SElEct) ------------------------------------------------------- 76
Signal Input Conditioning (Functn) -------------------------------------- 76
Low-Flow Cutoff (CutofF) -------------------------------------------------- 78
Totalizer Count Up/Down (Count)---------------------------------------- 78
Analog Output Programming (AoutPr)---------------------------------- 79
Programmable Function Keys User Menu (user)-------------------- 80
Internal Source Calibration (ICAL) --------------------------------------- 81
METER OPERATION -----------------------------------------------------84
Front Panel Buttons Operation -------------------------------------------- 84
Function Keys Operation ---------------------------------------------------- 84
F4 Operation --------------------------------------------------------------------- 85
Maximum/Minimum Readings---------------------------------------------- 85
TROUBLESHOOTING----------------------------------------------------86
Diagnostics Menu (diag)----------------------------------------------------- 86
Determining Software Version -------------------------------------------- 86
Reset Meter to Factory Defaults ------------------------------------------- 87
Factory Defaults & User Settings----------------------------------------- 88
Troubleshooting Tips --------------------------------------------------------- 91

Analog Panel Meter Instruction Manual
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Table of Figures
Figure 1: 1/8 DIN Panel Cutout and Mounting................................... 17
Figure 2: Meter Dimensions - Side View............................................ 18
Figure 3: Meter Dimensions - Top View............................................. 18
Figure 4: Transmitter Supply Voltage Selection............................... 19
Figure 5: Connector Labeling for Fully Loaded APM....................... 20
Figure 6: Power Connections............................................................. 20
Figure 7: Transmitter Powered by Internal Supply........................... 21
Figure 8: Transmitter Powered by Ext. Supply or Self-Powered..... 21
Figure 9: Voltage Input Connections................................................. 22
Figure 10: Relay Connections ............................................................ 22
Figure 11: AC and DC Loads Protection ........................................... 23
Figure 12: Low Voltage DC Loads Protection................................... 23
Figure 13: F4 Digital Input Connections............................................ 24
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 ... 62

Analog Panel Meter Instruction Manual
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INTRODUCTION
The APM is a multi-purpose, 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 operation.
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 digital input, F4, is
standard.
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-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-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)
PMA-13
Suppressor (snubber): 0.01 µF/470 Ω, 250 VAC

Analog Panel Meter Instruction Manual
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SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
General
DISPLAY Upper 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
Display lines 1 & 2 may be assigned to rate, total, grand
total, alternate (rate/total, rate/grand total, rate/units,
total/units, and grand total/units), set points, max/min, units
(line 2 only), and Modbus input. Additional displays are
available if parameter total is off, and parameter d-SCAL
is on: gross, alternating gross/net, PV1, PV2, and PCT
(refer to MPM instruction manual found on www.dwyer-
inst.com).
PROGRAMMING
METHODS
Four front panel buttons, digital inputs, or PC and Panel
Meter Pro software.
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 12-24
VDC ± 10%, 15 W max
Powered over USB for configuration only.

Analog Panel Meter Instruction Manual
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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 ±10%. 12-24 VDC powered models
selectable for 24, 10, or 5 VDC supply (internal jumper J4).
85-265 VAC models rated @ 200 mA max, 12-24 VDC powered
models rated @ 100 mA max, @ 50 mA max for 5 or 10 VDC
supply.
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
Installation Overvoltage Category III.
ENVIRONMENTAL
Operating temperature range: -40 to 65°C
Storage temperature range: -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
communication 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
3 years parts & labor

Analog Panel Meter Instruction Manual
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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
0.005% of calibrated span/°C max from 0 to 65°
C ambient,
0.01% of calibrated span/°C max from -40 to 0°C ambient
SIGNAL INPUT
CONDITIONING
Linear, square root, programmable exponent, or round
horizontal tank volume calculation
MULTI-POINT
LINEARIZATION
2 to 32 points
PROGRAMMABLE
EXPONENT
1.0001 to 2.9999
ROUND H TANK
Diameter & Length: 999.999 inch or cm calculates volume
in gallons or liters respectively.
LOW-FLOW
CUTOFF
0-999999 (0 disables cutoff function)
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
0.01 V
An error message will appear if the input 1 and input 2
signals are too close together.
INPUT
IMPEDANCE
Voltage ranges: greater than 500 k
Ω
Current ranges: 50 - 100 Ω(depending on resettable fuse
impedance)
INPUT
OVERLOAD
Current input protected by resettable fuse, 30 VDC max.
Fuse resets automatically after fault is removed.
F4 DIGITAL INPUT
CONTACTS
3.3 VDC on contact. Connect normally open contacts
across F4 to COM.
F4 DIGITAL INPUT
LOGIC LEVELS
Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC