Huawei iSitePower - Page 105

Table 3-74 Pin denitions of communications ports
RJ45 Pin Signal Description Remark
1 RS485 T+ RS485 transmission + Four-wire RS485
communications, complying
with the Modbus protocol
2 RS485 T- RS485 transmission –
3 NC Reserved
4 RS485 R+ RS485 reception +
5 RS485 R- RS485 reception –
6 NC Reserved -
7 CANH Positive terminal for
CAN communications
Used to report alarms to a
monitoring unit and
exchange data between
ESMs connected in parallel.
8 CANL Negative terminal for
CAN communications
DO1 and DO2 Ports
Table 3-75 DO1 and DO2 port
denitions
Silk
Screen
Denition Description Alarm Status
DO1 Fault, major
alarm
If the ESM raises one of the
following alarms, the dry contact
supplies an alarm signal:
Cell voltage sampling fault, cell
temperature sampling fault, charge
converter output short circuit, relay
coil short-circuit, charge low
temperature protection, discharge
low temperature protection, charge
high temperature protection,
discharge high temperature
protection, power module internal
overtemperature protection,
discharge converter output short
circuit, input reverse connection,
BMU anti-theft lock, overload
lockout due to component failure,
serial number
conict, serial
number
conict, input/output
discharge overvoltage lockout, and
discharge overcurrent lockout
Congurable
(If the dry
contact is
closed, an
alarm is
reported by
default.)
iSitePower Integrated Smart Site (ICC1000-A1-E1)
User Manual 3 Components
Issue 04 (2022-10-15) Copyright © Huawei Technologies Co., Ltd. 97