APM
MAX-M23
Before installation, read the Safety
Warnings overleaf.
CAUTION: Risk of Danger
Read complete instructions prior to installation and
operation of the unit
CAUTION: Risk of electric shock
Intended Use: The APM has been specifically designed for engineers requiring an effective way to monitor and
display data. The APM accepts a range of electrical inputs (depending on the model) and displays the data on its
integrated multi-format display. The APM has been designed for installation into electrical cabinets or display panels.
The units come as standard with two digital outputs and one serial output.
Operating Specification
The digital readout will still show the actual voltage even if the bar graph is out of range.
Voltage / Frequency
Shunt
Current Input
Frequency (min. voltage 0.5V AC)
DC Power Measurement
DC
Frequency
Power Measurement
Isolation
Measurement Category
Measurement Range
0–10V DC
0–500mV DC
0–80mA
0–400Hz
Watts
Measurement Accuracy
0.5%
0.1%
0.5%
Reinforced
4KV @ 1 Sec
3KV @ 1 min
CATII
Impedance
Voltage / Frequency
Frequency Shunt
Current Input
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2 MΩ
10 MΩ
15Ω
Communication
Modbus Configured Parameters (Trumeter configurator required): Only function code
4 – read input register supported.
Parameter RTU
Slave ID 0 to 255
Baud Rate 4800 to 192000
Stop Bits and Parity 2 stop bits no parity
1 stop bit even parity
1 stop bit odd parity
Communications Enable / Disable
Modbus Registers
Address Variable Type Description
1-2 32bit Float
3-4 32bit Float
5 1 Byte Alarm 1
6 1 Byte Alarm 2
TCP/IP Parameters
IP Address
Subnet Mask
Gateway, DNS1, DNS2, Hostname, Interface Name, Modbus Port Address,
Modbus Timeout Period.
Displayed Value
(after configuration)
SI measured unit
(before configuration)
Only adjustable if DHCP disabled
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Wiring Diagrams
DC VOLTAGE MEASUREMENT | AC FREQUENCY MEASUREMENT
GND
AOUT
DOUT1
DOUT2
RS485-A
RS485-B
VOLTS / FREQ
D+V
CURR ENT
PSU
+V
-V
I+V
-V
~
~
N
L
FUSE
GND
AOUT
DOUT1
DOUT2
RS485-A
RS485-B
L
PSU
N
INPU T
DC CURRENT MEASUREMENT USING SHUNT (500mV MAX)
+V
-V
D+V
I+V
-V
CURRENT VOLTS / FREQ
N
~
PSU
L
~
SHUNT
+-
FUSE
L N
PSU SUPP LY
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- +
- +
LOAD
Wiring Diagrams
RELAY OUTPUT (ACTIVATED BY DOUT1)
GND
AOUT
DOUT1
DOUT2
RS485-A
RS485-B
VOLTS / FREQ
D+V
CURR ENT
PSU
+V
I+V
~
~
-V
-V
N
L
NOTE: Relay requires
protection diode
-
+
4-20mA ANALOG OUTPUT
+
-
DC REL AY SUPP LY
GND
AOUT
DOUT1
DOUT2
RS485-A
RS485-B
+V
-V
VOLTS / FREQ
D+V
I+V
-V
CURRENT
~
N
PSU
L
~
-
+
Optional connection
to system ground
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4-20 mA output
Safety Warnings
WARNING: INSTALLATION AND MAINTENANCE MUST BE CARRIED
OUT BY SUITABLY QUALIFIED AND COMPETENT PERSONEL ONLY.
HAZARDOUS VOLTAGES MAY BE PRESENT ON THE CONNECTION
TERMINALS.
INSTALLATION
• Install this product in accordance with local regulations, codes and instructions.
• An external fuse must be fitted in-line with the PSU. Recommended fuse: 0.5A Type
F with a breaking capacity of 35A or greater. Fuse voltage rating must be greater
than the maximum supply voltage.
• All conductors carrying hazardous voltage must have external switching or
disconnect mechanisms fitted that provide at least 3mm of contact separation in all
poles. The switch must be suitably located; easily reached and marked as the
disconnecting device.
• Signal cables connected to this device must not exceed 30 metres long.
• If signal cables are routed outside the building, install extra surge-protection devices.
• Current measurement input, USB and all outputs: Observe maximum allowable
voltages. All circuits connected to these connectors must be limited-energy and
insulated by double/reinforced insulation from mains voltages according to IEC
61010-1:2010
Failure to install or operate the unit in accordance with the
above requirements may impair the electrical safety of the unit.
Voltage measurements: An external UL recognized or listed
overcurrent protection device (fuse or circuit breaker) must be
fitted in-line with the voltage lead. Recommended fuse: 0.5A
Type F with a breaking capacity of 35A or greater. Fuse voltage
rating must be greater than the maximum voltage that will be
applied to the meter.
MAINTENANCE
• Before cleaning, inspection or maintenance, isolate all power sources to the unit.
• There are no user-serviceable parts inside this unit. Never open the case.
• Inspect all external wiring connections at regular intervals. Replace any damaged
wiring and tighten any loose connections.
• To clean the unit, use a dry cloth to wipe the casing.
• Take great care connecting the supply. If you connect power to the wrong terminals,
it may destroy the unit.
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Specification
Environment
Temperature - operating
Temperature - storage
Altitude
Relative Humidity (non-condensing) - Continuous
Relative Humidity (non-condensing) - Intermittent
Overvoltage category (IEC664)
Pollution Degree (IEC664)
IP rating (from the front)
Power Supply
Voltage
Max Power t
Isolation
Display
Number of digits - Starburst
Number of digits – 7 Segment
Number of bar-graph segments
Backlight colours RGBW
LCD
Viewing angle
Open Collector Sinking Outputs
Max voltage (open collector outputs)
Max current (open collector outputs)
4-20 mA Analogue Output
Accuracy
Max Load
Resolution
0-10V Analogue Output
Accuracy
Resolution
Connections
Type Screw Terminals
Wire type
Min. cable temperature rating
Wire strip length 6.5mm to 7mm
Wire gauge
Torque 0.5-0.6Nm
In the Box
APM
Getting started & safety guide
IP65 Gasket
Mounting Kit
Dimensions & Weight:
Panel Cut-out: 68 x 68 mm (2.68 in) square; 106mm (4.00 in) round +0.7 -0
mm (0.02 in). Max. panel thickness: 11.0 mm.
Depth behind panel inside front: 55mm (2.17in) incl.
external connections. Weight: 340 grams.
VALUE
–10 to +60 deg C
–40 to +70 deg C
2000 metres
0 – 85 %
0 – 95 %
II
2
IP65
100-240V AC 50-60Hz
5W
4.2KVrms, 5mA 1 min
4
4
60
Positive or negative
+/-70° Horizontal
+/-70° Vertical
34 VDC
500 mA
0.50 %
240 Ω
0.02 mA
0.50 %
00.013V .50 %
Solid or Stranded
70ºC (158ºF)
(0.26” to 0.28”)
0.8mm² - 3.3mm²
(18AWG to 12AWG)
(4.42-5.31 lbf-in)
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Size
Size of the cutout in the panel:
Square: 68 x 68mm (2.68in) Round: 96.2 mm (3.79in) [+0.7 -0mm]
Software
You need the software to configure the setpoints and outputs.
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