Nilfisk SC370 43B Wartungshandbuch Seite 21

Service Manual- SC370
Specifications
Sample Shop Voltage Measurement
The following tables contain some "real world" shop voltage measurements to help you recognize what "normal"
looks like.
• Unless otherwise noted, all voltage readings are referenced to GND.
• Some pin numbers are listed out of sequence when measurements require pin-to-pin voltage references instead
of GND.
• Values of "≈24V" represent full battery voltage, regardless of the circuit path.
Please refer to Figure 1 and Figure 2 for connectors location on Dashboard (EB1) and Control board (EB2).
Figure 1. Connectors on Dashboard (EB1)
Pin# Color
1
2 BLACK
3
4 BLACK
5 White
6
7 Yellow
8
9 Brown
10 Green
Dashboard (EB1) J1 Connector
Function
RED +24V
GND
RED Charge Signal
Brush Release
Brush PWM
Blue Vacuum PWM
Water (Solution flow
adjustment)
Gray AD Input (Brush)
AD Input (Vacuum)
Main Relay
J1
Condition
When charging
Not charging
Brush release on
Brush release off
Brush motor in normal mode
Brush motor in ECO mode
Brush motor off
Vacuum motor in normal mode
Vacuum motor in ECO mode
Vacuum motor off
Solenoid valve on
Solenoid valve off
Brush motor in normal mode
Brush motor in ECO mode
Brush motor off
Vacuum motor in normal mode
Vacuum motor in ECO mode
Vacuum motor off
Machine on
Machine off
04 Control system 20
J2
Value
24V
0V
4.9V
0.5V
5.8V
0V
5.0V
3.9V
0V
5.0V
4.0V
0V
3.3V
0V
0.7V
0.5V
0
1.7V
1.2V
0V
≈20V
0V