Functions and parameters
Functions
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 – 47
Reversing
If the travel direction selector is pressed in the opposite direction to the
one that was selected, the truck will use the motor brake to come to a
standstill before then changing direction of travel.
Brake
The brake pedal function has three different positions:
• If the pedal is depressed to a maximum of 50 % of its possible travel,
the truck is braked by the motor.
• If the pedal is depressed between 50 and 90 % of its possible travel,
the support arm brakes, which are not part of the standard equip
-
ment, will be used, along with the motor brake.
• If the pedal is depressed by more than 90 % of its possible travel, the
mechanical brake is activated, along with the two other brakes.
If the truck is equipped with support arm brakes, a pressure sensor that
measures the load on the forks determines the degree of brake force to
be used.
When the truck is at a standstill, the parking brake will be activated
once the brake pedal is depressed by more than 5 %.
Monitoring
The brake pedal has two channels to the MCU. These are reciprocally
inverted. Both channels are monitored and must be within 0.25 – 4.75
V.
The parking brake, or the mechanical brake, only has two positions -
completely on or completely off.
The support arm brakes are controlled by the MCUand monitored for
short circuits and circuit breaks.
If an error is detected on the support arm brakes, the travel speed is
reduced to the speed that applies for a truck without support arm
brakes.
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