SENS EnerGenius® DC Compact Technical Manual
18
Table 9
–
Optional High Current Relay Connections
Wire from COM to OK for alarm present on open circuit or from COM to FAIL for present on closed circuit.
RELAY 1
Non-latching Coil
RELAY 2
Non-latching Coil
Relay Contacts
Summary
Assignable
Open on alarm
OK (TB1-1)
OK (TB1-4)
Close on alarm
Defaults to FAIL with
no AC and DC power
(normally closed)
FAIL (TB1-2)
FAIL (TB1-5)
Common
COM (TB1-3)
COM (TB1-6)
6.7.
CANbus and RS-485 Connections
Every charger includes CANbus and RS-485 communications via two RJ-45 jacks.
6.7.1.
CANbus
The unit is equipped with CANbus communications support via the RJ45 ports. This interface is
intended for communication with customer devices including battery monitoring systems, user
interfaces, and customer-specific CAN protocol communications. Consult the factory for
configuration and setup.
6.7.2.
RS-485
The unit is equipped with serial RS-485 communications support via the RJ45 ports. This interface
is intended for monitoring and communicating with the charger. Available protocols include
Modbus and DNP3. See manual sections on specific protocols for more information.
6.7.3.
Connection
Connect communications using a twisted pair cable at the RJ-45 connector on the
alarm/communications circuit board located on the inside front cover (see Figure 6 for detail).
Two RJ-45 ports are provided. The ports are in parallel and either port may be used. See Table 10
for connector pinout. Communications are isolated. An adapter from RJ-45 to an 8-position
terminal block may be connected to the RJ-45 connector and is available to order separately
(SENS p/n 208026, see Figure 7).
2 RELAYS,
3 POSITIONS PER
RELAY:
COM, OK, FAIL
PULL TO REMOVE
FROM HEADER
