AEC UPS IST7 - Work Principles and Modes; Work Principle Diagram; UPS Work Modes

UPS IST7 (10KVA-40KVA)
User Manual 2 Overview
13
No. Silk-screen Function illustration Remarks
Dry
contact
2
EPO -
The signal is valid when 2P terminal block
disconnect.
The signal is EPO and cannot settable.
-
IN. 1 -
The trigger level of signal is settable
(NC/NO) and short circuit is valid for
default.
The signal is settable and refers to the note
for detail. Default is charge forbidden.
-
The settable item and illustrations of input dry contact
NO. Item Illustration
1 Charge forbidden
The charge forbidden signal of battery: The UPS will alarm
and turn off the battery charge when receiving this signal.
The trigger level of signal is settable.
2 External MBB on
The breaker on signal of external maintenance bypass: The
UPS will alarm and turn off the inverter output and switch
over bypass output when receiving this signal. The trigger
level of signal is settable.
3 External BB status
The breaker disconnected signal of external battery: The
UPS will alarm and prompts fault when receiving this signal.
The trigger level of signal settable.
4 UPS remote on/off
The remote on/off signal of UPS: The UPS will on when
receiving this signal. The trigger level of signal is settable.
5 Batt. ground fault
The fault signal of battery ground: The UPS will report an
alarm and prompts fault when receiving this signal. The
trigger level of signal is settable.
6 Discharge forbidden
The discharge forbidden signal of battery: The UPS will
report an alarm and prohibits the battery discharge when
receiving this signal. The trigger level of signal is settable.