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1A Relay Output Module

The Relay Output Module adds four relays to the SiteMonitor System. The Relay Output Module includes two 6p6c SiteMonitor daisy chain jacks, and one 12 position removeable terminal block for field wiring.

The 12 position terminal block has the following pinout:

Note: Pin 1is the position closest to the 6p6c Jacks.

1 - Relay #1Common
2 - Relay #1 N.O.
3 - Relay #1 N.C.
4- Relay #2 Common
5- Relay #2 N.O.
6- Relay #2 N.C.
7- Relay #3 Common
8- Relay #3 N.O.
9- Relay #3 N.C.
10- Relay #4 Common
11 - Relay #4 N.O.
12- Relay #4 N.C.

The following are specific notes for each connection above:

6P6C SiteMonitor ManagementDaisy Chain Jacks:

These jacks are how this device is connected to the base unit and to other units as well. Both 6P6C Jacks are wired identically, so either one can be used as an input or an output. In addition, the daisy chain bus has been designed in a way that both straight and reversed 6P6C cables can be used.

To connect this device to the management chain, simply connect one or both 6P6C jacks to another SiteMonitor device with a short jumper cable.

Relay Outputs:

This unit includes four Low-Signal Relay Outputs. These can be used to switch low-amerage loads of up to 1/2A at 125VAC and 1A at 24VDC. Additional data on these outputs can be found on the Low-Signal Relay Output page.

Exceeding the switching capability ofeach relay will result in permanent damage to the relay and will necessitate non-warranty repair of the unit.

Each relay uses three pins on the 12 pin connector. Each relay is completely isolated from each other, and can be operated independently via SNMP.

Thecommon terminal of each relay will need to be connected if the relay is to be used. The remaining two relay pinswill need to be connected depending on your application.

The normally open (N.O.) contact will never be connected to the common terminal, unless a command to activate the relay is received via SNMP.

The Normally Closed (N.C.) contact will always be connected to the common terminal, unless a command to activate the relay is received via SNMP.

When power is lost to the unit, each relay will revert back to it's default state. Once power is restored, the value set in the "poweron" SNMP oid for the relay will be restored. With that in mind, we encourage users of the SiteMontor system to pick the contacts based such that the "normal" state of that output corresponds to the "0" value for that relay. For instance, if a load should normally be on, then use the "normally closed" contact. Or, if it should normally be off, then use the "normally open" contact. This will reduce load on the system, and will ensure operation during sitemonitor resets (when the relays may revert briefly to their "0" state during bootup).