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APM 

MAX-M21

 

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. 

Measurement Range

 

Voltage / Frequency Input 

0-600V DC / AC 50-60Hz

Shunt Input 

0 – 500mV AC/DC 

Current Input Direct

(max. 300V AC/DC) 

0–5A 

Frequency 

(min. voltage 26V AC) 

0–400Hz 

DC Power Measurement 

Watts  

AC Power Measurement 

Watts, VA, VAr 

DC 

0.5% 

Frequency (min 20V RMS) 

0.1% 

AC 

0.5%

 

Power Measurement 

0.5% 

Isolation 

Reinforced 

4KV @ 1 Sec 

3KV @ 1 min 

Measurement Category 

CATII 

Voltage / Frequency 

2 MΩ 

10 MΩ 

Current Input Direct  

4MΩ 

Communication

 

Modbus Configured Parameters (Trumeter configurator 

required): Only function code 4 – read input register

supported.

 

Parameter

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 

Displayed Value 

(after configuration) 

3-4

32bit Float 

SI measured unit  

(before configuration) 

1 Byte 

Alarm 1 

1 Byte 

Alarm 2 

IP Address

 

Only adjustable if DHCP 

disabled 

Subnet Mask

 

Gateway, DNS1, DNS2, Hostname, Interface Name, 

Modbus Port Address, Modbus Timeout Period. 

Measurement Accuracy

 

Impedance

TCP/IP Parameters

 

Shunt 

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Summary of Contents for APM MAX-M21

Page 1: ...5A Frequency min voltage 26V AC 0 400Hz DC Power Measurement Watts AC Power Measurement Watts VA VAr DC 0 5 Frequency min 20V RMS 0 1 AC 0 5 Power Measurement 0 5 Isolation Reinforced 4KV 1 Sec 3KV 1 min Measurement Category CATII Voltage Frequency 2 MΩ 10 MΩ Current Input Direct 4MΩ Communication Modbus Configured Parameters Trumeter configurator required Only function code 4 read input register ...

Page 2: ...USE PSU Measurement Input PSU N L V V D V I V V GND AOUT DOUT1 DOUT2 RS485 A RS485 B FUSE L N N L LOAD PSU CURRENT VOLTS FREQ PSU N L SUPP LY FUSE V V D V I V V GND AOUT DOUT1 DOUT2 RS485 A RS485 B FUSE L N VOLTS FREQ CURRENT N FUSE L LOAD PSU PSU N L SUPP LY N L V V D V I V V GND AOUT DOUT1 DOUT2 RS485 A RS485 B FUSE N L CURRENT VOLTS FREQ PSU N L LOAD PSU N L FUSE www GlobalTestSupply com Find Q...

Page 3: ...GND AOUT DOUT1 DOUT2 RS485 A RS485 B FUSE N L CURRENT VOLTS FREQ FUSE PSU SUPP LY LOAD 300V MAX N L N L PSU N L V V D V I V V GND AOUT DOUT1 DOUT2 RS485 A RS485 B DC REL AY SUPP LY CURRENT VOLTS FREQ PSU N L NOTE Relay requires protection diode V V D V I V V GND AOUT DOUT1 DOUT2 RS485 A RS485 B 4 20 mA output CURRENT VOLTS FREQ Optional connection to system ground PSU N L www GlobalTestSupply com ...

Page 4: ...d 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 ...

Page 5: ...nalogue Output Type Wire type Min cable temperature rating Wire strip length Wire gauge Torque In the Box APM Getting started safety guide IP65 Gasket 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 Specification VALUE 10 to 60 deg C 40 t...

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