UDRF01.04GB
Maintenance manual DRF 400–450
11 Common electrics – 11.5.1.3 Ignition voltage (15)
13
11.5.1.3
Ignition voltage (15)
page
–
Ignition voltage (15), description
Power feed ignition circuit
D1. Diagnostic menu 8.4.1.4
D2. Diagnostic menu 8.4.1.6
D3. Diagnostic menu 8.4.1.8
D4. Diagnostic menu 8.4.1.10
D5. Diagnostic menu 8.4.1.12
D6. Diagnostic menu 8.4.1.15
The ignition voltage feeds the power electronics.
The ignition voltage is activated by:
•
Start key in position I
•
Flashing hazard lights (Hazard) activated
When ignition voltage is activated the following takes place.
1.
Battery disconnector in position 1. Voltage feed to Control unit
cab (D790-1), ignition, switch flashing hazard lights, door switch
and interior lighting.
2.
Switch for start-up signal gives pulse to Control unit cab (D790-
1).
CAN-bus communication is established (not drivetrain).
3.
Start key in position I or flashing hazard lights activated.
4.
Control unit cab (D790-1) supplies voltage to power relay K1 in
electrical distribution box frame
5.
Ignition voltage supplies control units, relays, solenoid valves
and other electronics.
Drivetrain’s CAN-bus establishes communication.
- +
Startup
K1
K4
1
4
3
2
003169
D3
D4
D6
D5
D1 D2
D790-1
D795
D790-2
D797-F
D797-R
D797-O
D793
D794
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Содержание DRF420-60S5
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