Functions and parameters
Operation and connection sequences
Publication No. Date Valid from serial number T-code
261828-040 2008-08-21 6051502 815, 816
© BT Repair Manual RRE140/160/180/200/250 4 – 35
Event: 4. Driving in fork direction
Previous event 3. Basic control criteria
Action(s) The travel direction selector [B36] is moved towards the forks and input
A1-X505:4 increases from approximately 2.6 V to approximately 4.7 V.
The accelerator [B32] is depressed and this has an effect on input A5-
X130:17.
Contributing factors Operator parameter 3: Maximum speed in fork direction.
Operator parameter 4: Acceleration.
Emergency login.
Resulting conditions CID indication for driving and fork direction comes on.
Output A5-X131:20 is increased to approximately +48 V and the
mechanical brake [Q1] is released.
In terms of the support arm brake: The PWM outputs A5-X131:39 and
A5-X131:12. are modulated so that the brakes [Q16] and [Q17] are
released.
The drive motor is supplied with three-phase voltage from the transistor
regulator [T1].
Event: 5. Driving in drive wheel direction
Previous event 3. Basic control criteria.
Action(s) The travel direction selector [B36] is moved towards the drive wheel
and input A1-X505:4 decreases from approximately 2.6 V to approxi
-
mately 0.6 V.
The accelerator [B32] is depressed and this has an effect on input A5-
X130:17.
Contributing factors Operator parameter 2: Maximum speed in drive wheel direction.
Operator parameter 4: Acceleration.
Emergency login.
Resulting conditions CID indication for driving and drive wheel direction comes on.
Output A5-X131:20 is increased to approximately +48 V and the
mechanical brake [Q1] is released.
In terms of the support arm brake: The PWM outputs A5-X131:39 and
A5-X131:12. are modulated so that the brakes [Q16] and [Q17] are
released.
The drive motor is supplied with three-phase voltage from the transistor
regulator [T1].
Event: 6. Braking in neutral
Previous event 4. Driving in fork direction
or
5. Driving in drive wheel direction.
Action(s) The accelerator [B32] is released and this has an effect on input A5-
X130:17.
Contributing factors Operator parameter 5: Automatic braking.
Resulting conditions The frequency of the drive motor three-phase voltage is reduced.
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