Epo (Emergency Power Off) - GE lp33 20 series Installation Manual

5.3

EPO (EMERGENCY POWER OFF)

WARNING !
Connections described in this chapter shall be done only by a TRAINED PERSON or
SERVICE ENGINEERS.
Fig. 5.3-1 Terminals X7 - EPO
When activated, this switch causes the immediate shut-down of booster, battery-charger, inverter; and
the contactors K4, K6 and K7.
When the EPO has been activated, the system must be restored as follows:

Press the push-button EPO (contact on X7 / 1, 2 is closed again).

Press the key "O" (Inverter OFF – see Section 6.2 of User Manual) on the control panel.

Press the key "I" (Inverter ON – see Section 6.2 User Manual) on the control panel.
In case of a Parallel System press the key "O" (Inverter OFF) on the control panel of
each unit connected on the parallel bus and having its output switch Q1 closed.
Modifications reserved
GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx
Critical Power
P1 - Control board
X7
JP5
1 2
NOTE !
This procedure could imply a load shut-down.
An external Emergency switch (NC -
Normally Closed voltage-free contact) can
be connected on terminals X7 / 1, 2 of the
P1 – Control board.
NOTE !
Check that the Jumper JP5 is
not installed on the P1 –
Control board.
In a Parallel System a
separate NC (Normally
Closed) contact must be
connected individually to
each unit.
Installation Guide LP33 Series 20 & 30 UL S2
Page 38/43