Owner manual

Publication GMSI10-UM004B-EN-P - May 2010

22 Installing the XM-220 Dual Speed Module

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 53 for details.

Table 2.1 shows the on-board relay connections for the module.

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

The Expansion Relay module may be connected to the

XM-220 to provide additional relays. Refer to the XM-441

Expansion Relay Module User Guide for wiring details.

IMPORTANT

The NC/NO terminal descriptions (page 20) correspond

to a de-energized (unpowered) relay.

When the relay is configured for non-failsafe operation, the

relay is normally de-energized.

When the relay is configured for failsafe operation, the

relay is normally energized, and the behavior of the NC and

NO terminals is inverted.

Table 2.1 Relay Connections for XM-220

Configured for

Failsafe Operation Relay 1 Terminals

Nonalarm Alarm Wire Contacts Contact 1 Contact 2

Closed Opened COM 47 50

NO 48 49

Opened Closed COM 47 50