Danfoss
ET4020 Crimp Machine Operator’s Manual
14 | © Danfoss ET4020 Crimp Machine Operator’s Manual | 2022.12.
AQ435956026217en-000101
Electrical Schematics
Terminal Blocks and Pin Numbers
(115V and 230V models)
Terminal Block
Pin Number
Voltage
Wire Color
Description
TB1
1
+12V
AC
Black
From
transformer
(2
wires)
Black
To
work
light
TB2
2 +0V
AC
White
From
transformer
(2
wires)
White
To
work
light
TB1
3
None
Green
To
earth
ground
TB2
1 +4.04V
DC
Orange
To
transducer
TB2
2
+4.04 to 0.04V DC*
Red
To transducer
TB2
3
+0.04V
DC
Brown
To
transducer
TB2
4
+5V
DC
Red
Crimp
switch
TB2
5
0V
DC
White
Switch
common
TB2
6
+5V
DC
Red
Retract
switch
TB3
1
+24V
AC
Orange
To
dump
valve
TB3
2
+24V
AC
Red
To
motor
contractor
* The voltage at TB2 pin 2 varies between 4.04V DC and 0.04V DC, depending on the position of the crimp ring.
