Liebert 100-1000A User Manual

The Input Contact Isolator (ICI) is an optional, eight-channel input board for up to eight external user 

alarm or message inputs to be routed to the Liebert STS2’s alarm network. If the Transfer Inhibit 

option is supplied, the ICI will accommodate up to seven external user alarm or message inputs.
The contact is set to either be normally open or normally closed. When a contact closes or opens, an 

event is triggered. See 6.4 - Input Contact Isolator Board for more information on the ICI.
The Input Contact Isolator options are configured through the Input Contact Isolator dialog box, 

which is accessed from the Comm Options dialog box. The Input Contact Isolator dialog box contains 

eight choices to match the eight channel input board. You can label each button to identify the event 

associated with the contact. When the dialog box is accessed, each button flashes to display the Input 

Contact Isolator number and the user entered label. This label also appears in the Display Panel 

when an event related to an Input Isolator Connector is triggered.
The Input Contact Isolator dialog box allows you to:

• Label the input contact assignments for your setup.
• Set the delay for an external event triggering an alarm.
• Review the isolator contact assignments, once the labels are entered.

The delay allows you to set the number of seconds which a condition needs to persist to trigger an 

alarm.
These input alarms can also be configured to activate a programmable relay output, which is 

discussed in Configuring the Programmable Relay Board Settings on page 97.
When the Transfer Inhibit option is supplied, connect a N.O. dry contact (customer-supplied) to Input 

Contact 8 (Pins 15 and 16). When the customer contact closes, transfers will be inhibited as long as 

the contact remains closed. Input Contact 8 is factory-set so no setup is required. The Transfer Inhibit 

option prevents Input Contact 8 from being used for any other input.
To configure the Input Contact Isolator relays:
1. Select INPUT CONTACT ISOLATOR from the Comm Options menu.

The Input Contact Isolator dialog box is displayed.

2. Select INPUT CONTACT 1.