31
10. Communication
10.1 STS Module
The front panel of the STS Module contains all interface and communication devices of the UPS system, including dry contact ports (CN1 – CN8)
and communication ports (RS-232 serial, USB and SNMP card slot).
L
RS232
USB
CD
SNMP
CN4
CN1
CN3
CN5
CN6
CN2
CN7
CN8
EP
O
+V
CC
+V
CC
EN
V
+V
CC
+V
CC
+V
CC
+V
CC
+V
CC
+V
CC
+V
CC
+V
CC
BC
B.C
BC
B.S
M
AI.
S
EX
T.N
IN
T
BA
T.C
BA
T.D
G
ND
BA
T.B
BY
P.B
Figure 10.1
10.2 Dry Contact Ports
Dry Contact Number
Function
CN1
Remote EPO (Emergency Power Off) Input port
CN2
Reserved for system use
CN3
BCB (Battery Circuit Breaker) port – reserved function
CN4
MBS (Maintenance Bypass Switch) port
CN5
Internal Output Switch port – reserved function
CN6
Battery Cabinet Temperature Detection port – reserved function
CN7
Battery Breaker Control port – reserved function
CN8
Bypass Backfeed Control port – reserved function
10.2.1 Remote EPO Input Port
The SmartOnline SVX-Series UPS includes an Emergency Power Off (EPO) function for site safety. This may be operated via a user-provided
remote contact. User may define the logic (NC – Normal Close, or NO – Normal Open) for the EPO function via the LCD panel (see
Section
9.3.6.1: General
).
Logic
Position
Description
NC
CN1.1 and CN1.2
EPO active when opened
NO
CN1.1 and CN1.2
EPO active when closed
For normal UPS operation, keep pins 1 and 2 open. To enable EPO operation, close contact between pins 1 and 2. The default EPO setting is NO,
for normal UPS operation.
Note:
Activating EPO shuts down the UPS system rectifiers, inverters and STS. The input power supply is not internally disconnected.
Control Panel Connection RS-232 Port
SNMP Card Slot
CN1
CN2
CN3
CN4
CN5
CN6
CN7
CN8
USB Port