Rockwell Automation 1440-RMA00-04RC XM-440 Master Relay Module - Manual (Page 28)

Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
28 Installing the XM-440 Master Relay Module
Connecting the Relays
The XM-440 has both Normally Open (NO) and Normally Closed (NC) relay
contacts. Normally Open relay contacts close when the control output is
energized. Normally Closed relay contacts open when the control output is
energized.
The alarms associated with the relay and whether the relay is normally
de-energized (non-failsafe) or normally energized (failsafe) depends on the
configuration of the module. Refer to Relay Parameters on page 45 for details.
There are four double pole double throw relays in the XM-440. All relay
contacts (24 total) are available for wiring on the terminal base unit, as shown
in Table 2.1 on page 30.
IMPORTANT
24Vdc needs to be wired to terminal 0 (+24 V In) to
provide power to the device and other XM modules linked
to the wired terminal base via the side connector.
ATTENTION
The power connections are different for different XM
modules. Refer to the installation instructions for your
specific XM module for complete wiring information.
IMPORTANT
All XM relays are double pole. This means that each relay
has two contacts in which each contact operates
independently but identically. The following information
and illustrations show wiring solutions for both contacts;
although, in many applications it may be necessary to wire
only one contact.
TIP
Up to two Expansion Relay modules may be connected to
the XM-440 to provide an additional four to eight relays.
Refer to the XM-441 Expansion Relay Module User Guide
for wiring details.