7.6.1 Define Output as Normally Open or Normally Closed
Each output may be set up as Normally Open (NO) or Normally Closed
(NC). The default setting for all output points is NO (Normally Open).
• From the Setup Outputs Menu, shown at right, use the arrows to
choose Norm Open/Close and press Enter.
• To change the normal state for this output, use the arrows to
choose the state:
• NO (Normally Open)
• NC (Normally Closed)
• Press Enter.
7.6.2 Define Operating or Standby Mode
Each output may be defined as Operating (OP), Standby (ST), or Not Used
(NU). This setting takes precedence over any setting in the override menu
(see Override Output on page64).
Default settings are:
• Outputs1, 2 and 3 are in Operating (OP) mode
• Output4 is in Standby (ST) mode
To change the mode:
• From the Setup Outputs Menu, shown at right, use the arrows to
choose Mode for the selected output and press Enter.
• To change the output’s mode, use the arrows to choose one of these options:
• OP (Operating)
• ST (Standby)
• NU (Not Used)
• Press Enter.
7.6.3 Enable or Disable an Output Device in Alarm Status
You may choose whether to Enable or Disable an output when the
connected device is in alarm status. The default setting for all output
points is Enabled.
• From the Setup Outputs Menu, choose In Alarm, as shown at
right, and press Enter.
• To make a change, use the arrows to choose E (Enable) or D
(Disable) to determine what happens when an alarm is detected
in the device.
• Press Enter.
Vertiv | Liebert® AC4 User Manual | 51