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Troubleshooting
BR/BD 75/140 R, BR/BD 90/140 R
New Unit Information 03.2004
Drive sensor
1
Floor panel
2
Drive sensor (B1)
3
Unit housing
4
Adjusting screws (2x), drive sensor
Drive sensor (B1)
1
2
3
4
Note:
When installing the floor panel (1) ensure
that the wires are not clamped or pinded to
the drive sensor.
Voltage measurement at terminal X6
Main control printed circuit board, terminal X6
1
2
3
-
+
+
Adjust drive sensor (B1)
– Remove the retaining screws of the floor panel
(1) and lift up the floor panel.
– Remove the cover of the main control printed
circuit board.
– Switch unit on.
– Connect the voltmeter to terminal X6 connec-
tion 1 and 2 (see diagram below) and measure
the supply voltage.
– If the value exceeds the tolerance of ± 0.25 V
the main control printed circuit board must be
replaced.
– Connect the voltmeter on the main control prin-
ted circuit board at connector X6, attach termi-
nal 1 and terminal 3 (see diagram below).
– If the voltage value is above the nominal value,
the message „Error! Incorrect start“ appears
in the display of the instrument panel.
– Loosen the adjusting screws (4) and adjust
the drive sensor (2) by rotating it until the no-
minal value is displayed at the voltmeter.
– Retighten the retaining screws (4).
Nominal value:
1-3 Neutral voltage
= 0,3 ± 0,05 V
1-2 Supply voltage
=
5 ± 0,25 V
ORIGINAL