APC ACRC103 Specifications download pdf (Page 20)

InRow RC Operation and Maintenance12

Set Up Contacts

Input and output contacts

Path: Main > Configure Unit > Discrete I/O

Each cooling unit supports a user-defined input contact and a user-defined output contact. Each contact

monitors a sensor and responds to changes in the state of the sensor (open or closed).

Input State. Indicates the actual state of the input contact (open or closed). A cooling unit is On when

the state is normal and in Standby mode when the state is not normal.

Output State. Indicates the actual state of the output contact (open or closed). An alarm will cause the

output contact to change from the normal states of the input.

Normal State. Edit the normal states of the input and output contacts normal states.

Input contacts can cause alarm conditions based on a user-defined normal state. Output contacts can map

internal alarms and events to outside devices.

Path: Main > Configure Unit > Discrete I/O > Normal State

Input Normal.

Choose the normal state of the contact. The cooling unit changes its operating mode to

Standby when the normal state differs from the actual state.

Output Normal. Set the normal state for this contact. If the state of an alarm or event mapped to this

contact changes from the normal state, the contact also changes state.

Output Source. Define the type of alarm, either Any Alarm or Critical, that causes the output to

change from its normal state.

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APC ACRC103 Specifications Page 20