4 – 52 Repair Manual RRE140/160/180/200/250 © BT
Functions and parameters
Functions
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
Reach movement
To detect reach carriage position, the reach movement uses a scale
with two corresponding sensors, [B26] and [B27]. Once the reach car
-
riage starts to approach its end position, the speed is reduced, and it is
stopped by means of a controlled movement.
Monitoring:
• The reach movement control is checked to ensure it is within 0.3 –
4.7 V.
• The electrical circuits of the reach valves are monitored for short cir-
cuits and breaks in the cabling.
• The two digital signals of the reference sensors are monitored by
checking that the reach carriage has moved after 1 second when an
outward movement is requested.
Lift height limitation
The seven service parameters 380 – 386 may be used to set height lim-
itations, and parameters 387 – 393 are used for activation and to spec-
ify whether the various limitations must apply.
When it comes to level selection, the limitations that have been set by
parameter will have higher priority than the height selection, and the
movement is stopped once the forks approach the limit. Continuation of
the lift is disabled. When this happens, a disable symbol is displayed in
the CID.
Lift height limitations that are not parameterized as "Obligatory" may be
overridden with a cancel button. Pressing the button removes the limi
-
tation for 5 seconds. Within this period the forks are permitted to pass
the next limit. Once the forks have passed the limit, they are permitted
to stay at that height until they are lowered back under the limit.
Maximum height limitation
The maximum lift height is set by a factory parameter. Once the forks
reach this level, the movement is stopped and lift continuation is pre
-
vented. The cancel button for lift height limitation cannot be used to
override this limit.
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