Functions and parameters
Operating principle
© BT Repair manual SWE100, 120, 120L, 120S, 140, 140L, 200D 6 – 3
Order no.. Date Valid from serial no. T code
258946-120 2012-08-30 6061850- 841×842×843
6.3 Operating principle
Event: 1. The battery is connected
Action(s)
Connect the truck battery [G1]
Influencing
elements
Main power fuses OK [F1]
Operating circuit fuses OK [F50, F51]
Resulting
conditions
The status LED for the transistor regulator is lit permanently [T1].
Event: 2. Start the truck
Preceding event(s)
The battery is connected.
Action(s)
Enter a valid PIN code and press the ON button on the keypad [S223].
Influencing
elements
The emergency stop [S21] has not been activated [T1:INP. SUPPLY+24V
DC] {high}.
Resulting
conditions
The current lamp shines. Main display shows the hour meter for 4 seconds
and after this the battery charge as a percentage of full charge.
The mechanical brake remains applied [Q1] [T1:OUT.BRAKE RELEASE]
{high}.
Event: 3. Lower the tiller arm to the drive position
Preceding event(s)
Start the truck.
Action(s)
Lower the tiller arm handle.
Influencing
elements
Sensor for tiller arm in drive position [B60].
Resulting
conditions
Tiller arm sensor in drive position activates [B60] [T1:INP. TILLER ARM IN
DRIVE POS] {low}.
The main contactor output voltage goes {low} [T1:OUT. MAIN
CONTACTS]
The main contactor closes [Q10].
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