Table 23. Contactors: Molex MiniFit Jr Connector
Molex 39-01-2125
Manufacturer
Molex Incorporated
Housing
39-01-2125
Housing material
Nylon UL94V-0
Circuits
12
Crimp terminal
39-00-0181
Wire gauge range
AWG18-24 stranded
Table 24. Contactor Connector Pin Assignment
Pin
Connection
Description
Connected to Device
1
COIL1_HI
Positive Coil 1
Contactor 1 positive coil connection
2
COIL2_HI
Positive Coil 2
Contactor 2 positive coil connection
3
COIL3_HI
Positive Coil 3
Contactor 3 positive coil connection
4
COIL4_HI
Positive Coil 4
Contactor 4 positive coil connection
5
No Connect
Not Connected
No Connect
6
COM
Negative reference for
external supply
External Power Supply
7
COM
Negative Coil 1
Contactor 1 negative coil connection
8
COM
Negative Coil 2
Contactor 2 negative coil connection
9
COM
Negative Coil 3
Contactor 3 negative coil connection
10
COM
Negative Coil 4
Contactor 4 negative coil connection
11
+VINT
PI Power Supply
Connect to Contactors connector Pin
12 if driving contactor coil from Power
Interface power supply
12
+VCOIL
12~24V Contactor Coil
Power Supply
Connect to external power supply or
Contactors connector Pin 11 if driving
contactor coil from Power Interface
power supply
The following is an example 2 contactor implementation with 24V coils that are powered from the
PI:
Installation Guide - 2018-10-08, Rev. 2.0
25