6
MPPT charge controller User Manual
2.2.3 Connection compartment
External interface terminal as shown in Figure 2-3.
Figure 2-3 Connection terminals
Table
Table
2-3 Connection terminal introduction
Silk-screen
Definition
A
Com In
Connection terminal for parallel communication input.
B
Com Out
Connection terminal for parallel communication output.
C
EPO
EPO contacts, defined for remote on/off.
D
Relay
Output dry contacts.
E
RS485
Connection terminal for RS485 communication.
F
BAT+
Battery Connection Positive
G
BAT-
Battery Connection Negative
H
PV-
PV array Negative
I
PV+
PV array Positive
L
BTS
Connection terminal for battery temperature sensor.
Table
2-4 Pin definition of PCB Connector A,B
Pin
Definition
Pin1
--
Pin2
RS485_A
Pin3
RS485_B
Pin4
--
Table
2-5 Pin definition of PCB Connector E
Pin
Definition
Pin1
RS485_B
Pin2
RS485_A
Pin3
GND
Pin4
RS485_A
Pin5
RS485_B
Pin6
GND
Pin7
RS485_A