Front Panel Layout (All Units); Epo (Emergency Power Off) Function - Toshiba 4200 FA CT User Manual

6.8

Front Panel Layout (All Units)

Refer to the following illustration for the entire UPS front panel operating procedures.
4-line liquid
4-line liquid
crystal display
crystal display
screen (see
screen (see
Section 6.12)
Section 6.9)
line-1
line-2
line-3
line-4
AC IN INV BYP
Green light emitting
Green light emitting
diodes (LED)
diodes (LED)
(see Section 6.11)
(see Section 6.8)
6.9

EPO (Emergency Power Off) Function

These units are equipped with terminals for receiving an EPO (Emergency Power Off)
"closed contact" switch command from two locations: (1) a remote location and (2) from a
front panel mounted EPO switch. This safety feature enables quick shutdown of the UPS
AC output and battery circuits. Usually the EPO switch is installed in a central location that
is easily accessible to personnel concerned with the operation of the UPS and the
equipment connected to it. The EPO function is initiated by pressing the switch to the
closed "shutdown" position. The effect of using the EPO switch is the same whether the
UPS is in the AC Input Mode, Battery Backup Mode, or the Bypass Mode. See
'EMERGENCY OFF' screen. The following figure shows the UPS condition after
application of the EPO switch. Use the Start-up Procedure for restarting the unit.
Power Flow
Input Isolating
Power XFMR
4200FA CT/XT User's Manual
TOSHIBA
MONI BATT
IN
BUZZ
STOP
BATT
FAULT
RESET
Red light emitting
Red light emitting
diode (LED)
diode (LED)
(see Section 6.11.1)
(see Section 6.8)
TRIPPED
MCCB
Emergency
Emergency
Power Off switch STOP/RUN key
power off switch STOP/RUN key
switch
(see Section 6.9)
(see Section 6.6) switch
F1
OUT BATT
TEST
EPO
MENU ENTER
12-key Data entry
12-key Data entry
keypad (see
keypad (see
Section 6.17)
Section 6.14)
MBS
Bypass
OFF
Converter
OFF
Charger/
Chopper
External
Batteries
UPS
STOP RUN
4200 Series
ON-LINE
UNINTERRUPTIBLE POWER SYSTEM
OFF
Inverter
Output
Power
37