1) MESSAGE
The display shows a fault code, the description of the fault and a guidance of what action is to be taken by
the user. A maximum of 10 faults are displayed at one time. If an input power failure occurs during a fault
condition, the fault indication and input power failure announcement are alternatively displayed at 5 second
intervals.
2)
SILENCE ALARM
This icon will appear when a failure occurs. The audible alarm (announcing the failure) can be silenced by
pressing this icon.
4.4
EXTERNAL AUX CONTACT INPUT AND OUTPUT TERMINAL BLOCKS
The UPS is equipped with terminals strips TN1 (Input) and TN2 (Output) on the Auxiliary Connection
Board, IOAU-09. Some of these terminals are user-assignable to a variety of functions. These can be
programmed to:
•
Inputs (TN1): Control the UPS remotely, or report environmental data to the UPS.
•
Outputs (TN2): Report status data from the UPS to external annunciation/monitoring devices.
4.4.1
Aux contacts - Input
The Input terminal provides four (IN1 thru IN4) programmable contacts (see) that can be set to any of the
functions in Table 4-1.
PROHIBIT
Inputs require a dry NO (Normally Open) contact to be wired on the corresponding terminals on TN1 of
IOAU-09. Closing this contact activates the selected functionality set for that input. The Inputs provide a
signal or "wetting" voltage of 24VDC / 8.3 mA. See Figure 4-19. The function takes effect immediately upon
contact closure, and is removed immediately upon opening.
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Figure 4-17 Message Screen
Do not apply voltages to remote access input terminals.
Damage to UPS may result.