Andover Controls CONTINUUM NetController - UPS Programming

32 Andover Controls
UPS Programming
The NetController acts as the intelligence in your system. Plain English programs are
created and then downloaded from the
Continuum workstation and are executed by the
CPU within this module. There are several
Plain English commands that, when inserted
into your programs, allow the NetController to sense when the system is operating on
battery backup power (UPS operation) and to remove power from critical areas before the
available power is depleted.
The following
Plain English keywords and system variables pertain to this UPS operation:
PowerFail
CPUPower
ModemPower
PowerUpTime
Detecting a Power Failure
When the main AC power fails, the UPS version of the power supply (PS 120/240 AC 50
U) signals the NetController that it has lost AC power. You can add a routine to your
program to test for this occurrence using the PowerFail system variable:
If PowerFail is ON then …..
Turning Off Various Subsystems
When a loss of power is detected, it signals that the system is operating using backup
batteries. In order to conserve power during this operation, you have the ability to remove
power from the optional modem and or the CPU itself. The following commands would be
used in both of these scenarios:
If PowerFail is ON then SET ModemPower to OFF ‘ turns off power to the modem
If PowerFail is ON then SET CPUPower to OFF ‘ turns off power to the CPU and all
subsystems including the modem
How Long Was I Down?
The following system variable can be used to keep track of how long it has been since
the last power failure. For a comprehensive example of its use, refer to the description of
the
PowerUpTime system variable in the Continuum workstation Help file.