Allen-Bradley 1440-SDM02-01RA, User Manual, Page: 30 / 168

30 Rockwell Automation Publication 1440-UM001D-EN-P - September 2016
Chapter 1 Install the XM-124 Standard Dynamic Measurement Module
Connecting Power
Power that is supplied to the module must be nominally 24V DC (±10%) and
must be a Class 2 rated source.
Wire the DC-input power supply to the terminal base unit as shown in
Figure 10 .
Figure 9 - DC Input Power Supply Connections
37 Chassis Connection to DIN rail ground spring or panel mounting hole
38 Chassis Connection to DIN rail ground spring or panel mounting hole
39 SetPtMult Switch input to activate setpoint Multiplication (active closed)
40 Switch RTN Switch return, shared between SetPtMult and Reset Relay
41 Reset Relay Switch input to reset internal relay (active closed)
42 Reserved
43 24 V Common
(1)
Internally DC-coupled to circuit ground
44 24 V In Connection to primary external 24 V power supply, positive side
45 24 V Common
(1)
Connection to external 24 V power supply, negative side (internally DC-coupled to
circuit ground)
46 Reserved
47 Relay Common Relay Common contact
48 Relay N.O. Relay Normally Open contact
49 Reserved
50 Reserved
51 Reserved
(1) Terminals are internally connected and isolated from the chassis terminals.
IMPORTANT A Class 2 circuit can be provided by use of an NEC Class 2 rated power
supply, or by using a SELV or PELV rated power supply with a 5 A current
limiting fuse installed before the XM module.
Table 2 - Terminal Block Assignments
No. Name Description
+
-
24V DC
power
supply
Power supply
Negative (common)
side must be grounded