DO1 and DO2 Ports
Table 3-79 DO1 and DO2 port denitions
Silk
Screen
Denition 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, straight-
through short-circuit fault, straight-
through open-circuit fault, cell fault,
reverse-connection protection,
internal temperature protection, cell
temperature sampling fault, charge
low temperature protection, charge
high temperature protection, charge
overcurrent protection, discharge low
temperature protection, discharge
high temperature protection,
discharge overcurrent protection,
serial number
conict, and discharge
overcurrent lockout
Congurable
(If the dry
contact is
open, an
alarm is
reported by
default.)
DO2 Overload
warning,
overdischarge
protection
If the ESM raises one of the
following alarms, the dry contact
supplies an alarm signal:
Battery group discharge
undervoltage protection, single cell
discharge undervoltage protection,
cell low voltage disconnection
protection, battery group discharge
undervoltage alarm, cell discharge
undervoltage alarm, and discharge
overcurrent alarm
LED Indicator
Figure 3-90 LED indicator
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User Manual 3 Components
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