Constant Voltage Mode (Current Protection Mode) - Pacific 110ACX Operation Manual

SECTION 4 OPERATION
4.9

CONSTANT VOLTAGE MODE (CURRENT PROTECTION MODE)

When the CURRENT PROTECTION feature is enabled, the ACX will operate in a constant
voltage mode. In this mode, if the load current exceeds the set current protection limit (IprA) for a
specified period of time, the power source will generate a fault condition and open the output relay
of the power source. This disconnects the load from the AC Source. An error message will be
displayed on the screen when this event occurs.
The programmable delay may be used to allow ride-through of temporary inrush current events
and prevent nuisance tripping in this mode of operation. The protection delay (IprT=) can be set by
the user in 100 msecs steps from 100msec (1) to 109.22 mins (65535)
When the System Output is disabled due to Current Protect, the UPC will display
Either the CLEAR or DISPLAY button must be depressed to clear the fault before the OUTPUT
ENABLE switch will operate.
To avoid conflicts with the constant current mode of operation, the protection mode has to be
enabled by the user. It can be toggled ON or OFF from the CURRENT PROTECT MENU which is
reached by pressing function key f
Press 3 for GENERAL SETUP
Press 7 for MORE OPTIONS...
Press 3 for CURRENT PROTECT
(Sequence: f
To set the protection level and time delay for the constant voltage mode, the Ilim field in the
PROGRAM screens can be toggled to the IprA and IprT fields by using the +/- toggle key. Once
selected, use the ENTER key to proceed to the value field and use keypad to set Current Level
and Delay in 100msec segments. Press EXECUTE to set the new values for the selected
PROGRAM number.
"ERROR – CURRENT PROTECTION TRIGGERED"
followed by:
n
  
3 7 3)
n
CURRENT PROTECTION MODE SETUP SCREEN
PROGRAM SCREEN IprA CURRENT LEVEL SETTING
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