G
AMATRONIC
E
LECTRONIC
I
NDUSTRIES
L
TD
.
Centric 3x480 Vac, Installation Guide, rel. 2.2
41
Figure 36: Connector group 2
Figure 37: Pin numbers in D9 connectors
Table 11: Pin assignments for D9 connectors
P
IN
#
ALARM
CONNECTOR
RS232
CONNECTOR
RS485
CONNECTOR
1
Input dry contact #5 (AUX5)
RXD, Receive data
RTX-
2
Reserved
TXD, Transmit data
not used
3
Line failure (default; can be reassigned)
not used
RTX+
4
COMMON
GND
not used
5
Low battery (default; can be reassigned)
not used
not used
6-9
Remote panel
not used
not used
5.2
Emergency Power Off – EPO (manual)
An external Emergency Power Off (EPO) switch may be installed on the
Centric
by the customer. The
EPO switch cuts power to the load in emergency situations.
The connection point for the EPO switch is a two-pin connector on the lower rear of the system (connector
group 3). See Figure 32, and item 1 in Figure 36. The EPO switch must be an N.O.-type, rated for at least
24 Vdc, 1 A. Be sure to perform a continuity test on the EPO switch before connecting it to the UPS.
5.2.1
Restarting the UPS after EPO
After the emergency situation that prompted use of the EPO switch has been resolved, the UPS can be
restarted as follows:
1.
Reset the EPO switch.
2.
Switch off the following circuit breakers: ac input, bypass ac input, battery.
