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15
3. Installation and Wiring
Figure 3-2: Rear View Detail, Models S3M25K and S3M30K
1
LCD Panel
2
Battery Temperature Sensor (NTC)
3
RS-485 Port (MODBUS or Battery Thermostat)
4
USB Port
5
RS-232 Port
6
BAT_SW: Battery Breaker Status Detect*
7
Backfeed Protection Port
8
MAINTAIN-AUXSWS Port**
9
REPO Port
10
Parallel Port
* Battery Breaker Status Detect. Connect the battery breaker auxiliary contact to the BAT_SW port on the UPS and enable the function. The
UPS will detect the battery breaker status (closed or open) and will display it on the LCD (Dry BATT Breaker).
** External Maintenance Breaker Status Detect. Connect the external maintenance breaker auxiliary contact to the MAINTAIN-AUXSWS port
on the UPS and enable the function. The UPS will detect the external maintenance breaker status (closed or open) and display it on the LCD
(Dry MBS Breaker).
11
LBS Port (for future use)
12
Cold Start Button
13
Accessory Slot
14
WEBCARDLXMINI Network Management Card
15
Mains Breaker
16
Bypass Breaker
17
Maintenance Breaker
18
Output Breaker
19
Terminal Block
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
19
17 18
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