GE lp33 20 series Installation Manual

Critical PowerModifications reserved Page 38/43GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx Installation Guide LP33 Series 20 & 30 UL S25.3 EPO (EMERGENCY POWER OFF)WARNING !Connections described in this chapter shall be done only by a TRAINED PERSON orSERVICE ENGINEERS.Fig. 5.3-1 Terminals X7 - EPOAn external Emergency switch (NC -Normally Closed voltage-free contact) canbe connected on terminals X7 / 1, 2 of theP1 – Control board.NOTE !Check that the Jumper JP5 isnot installed on the P1 –Control board.In a Parallel System aseparate NC (NormallyClosed) contact must beconnected individually toeach unit.When activated, this switch causes the immediate shut-down of booster, battery-charger, inverter; andthe contactors K4, K6 and K7.NOTE !This procedure could imply a load shut-down.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 ofeach unit connected on the parallel bus and having its output switch Q1 closed.1 2P1 - Control boardJP5 X7LPS33U_020-030_S2_UPS-X7-JP5_01