4.2.11 BMS module port
Port Function
CAN
DB9 Communicate with the main control module.
RJ-45 Communicate with the main control module.
RS-485
DB9 Complete battery module cascading.
RJ-45 Complete battery module cascading.
ADD Select module communication ID.
EXTENAL BATTERY START External battery reserve switch. No debugging.
LED Indicator light
Dry contacts
1
Dry contact output:
• Charging current is too large.
• Discharging current is too large.
• Contactor adhesion to be determined.
2
Dry contact output:
• Undervoltage
• Overvoltage
• High temperature
3
Dry contact output:
• Voltage
• Temperature
• Current Sampling abnormal
• Communication failure pending
4
Dry contact input:
• Control battery contactor
Table 4.12 BMS Module Ports
50 Proprietary and Confidential ©2023 Vertiv Group Corp. 4 Electrical Installation
Vertiv™ Liebert® APM2 30 to 120 kVA Modular UPS User Manual
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