IntelliSAW IRM-48 Reader
Installation Manual
Page 15 of 28
IRM-48 Reader
910.00371.0001
Power Supply
V+
V-
Modbus RTU
D-COM
DATA -
DATA +
Humidity Sensor
M12 Connector
Laptop
AIR INTERFACE ANTENNA
AIR INTERFACE ANTENNA
AIR INTERFACE ANTENNA
AIR INTERFACE ANTENNA
Figure 8: IRM-48 Connections and Common Wiring
4.1
P
OWER AND
M
ODBUS
RTU
C
ONNECTIONS
The IRM-48 Reader uses a single connector for power and Modbus RTU communication. The
Connector is a 6 position Male connector. The connector accepts 16-26 AWG wire.
It is recommended that Ferrules be used for all terminating wires.
V+
V-
FE
D-COM
DATA -
DATA +
24V - 60V DC
Power Supply
V+
V-
Modbus RTU
D-COM
DATA -
DATA +
Figure 9: Power and Modbus RTU Connections
4.1.1
Power
The IRM-48 Reader operates at 48VDC nominal power, but can operate between 24 to 60V DC
with a total power consumption of 3.5 W. The following block diagram outlines the
recommended power wiring for the IRM-48 Reader with a 2-pole circuit breaker and AC/DC
power supply. Surge suppression devices can also be installed on the input line and neutral if
higher safety rating is required.