APC ACRC301S User's Guide download pdf (Page 13)

InfraStruXure InRow RC—Operation and Maintenance 7

Set Up Contacts

Input/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 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 state.

Normal State. Edit the input and output contact normal states.

You can set input contacts to 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.

Input State: Open

Output State: Open

Normal State

na1651a

Input Norm: Open

Output Norm: Open

Outpt Src: Any Alrm

na1652a

Input Norm: Open

Output Norm: Open

Outpt Src: Any Alrm

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APC ACRC301S User's Guide Page 13