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IW4/IW7 WB/WBV Operations
D1 0412BA1-GB04 15
Optional (various switches are optional and not necessarily available)
Symbol Description
Driving Direction Reverse
Use the reversing switch to reverse the driving direction of the
rollers. It is possible then to drive onto the test stand from 2
directions.
Speed Switch-Over
The testing speed of the rollers can be switched over from 3 km/h
to 6 km/h. (only possible with IW7E /3, or IW7E /4).
Slip Switch-Off Control (MB-Mode)
The green lamp on the display lights up on the side on which the
slip occurs first
'Unoccupied'-Simulation for Weight Simulator
When the rotary switch is set to position 1 the test stand is in "
inactive" mode to facilitate safe operation of the weight simulator.
Turn the rotary switch to 0 to re-activate the test stand.
Manual Measurement Range Switch-Over
The large measurement range is always activated when the
motors are turned on on test stands not equipped with load cell or
remote control. For safety reasons, however, the smaller
passenger car slip switch-off value has been selected as a pre-
setting. The switch-over to the higher truck slippage value only
takes place when the brake force exceeds 5 kN. If the test should
be conducted using the truck slip value even with small brake
values, use this button to switch directly over to the truck slip
value. When a passenger car is driven onto the test rollers the
small measurement range can be selected using this switch.
Single Wheel Switch
A selector switch has been installed for single wheel tests for test
stands without remote control.
Position 0: both rollers start up
Position L: only the left-hand roller starts up
Position R: only the right-hand roller starts up
If the selector switch is set to 0 after the single wheel
measurement is completed the rollers will start up
automatically when occupied!
Weight Transfer Switch (Portugal-Mode)
A selection switch is built into test lanes with shock absorber
testers for the weight measurement.
Position A: Weight of the axle (for TRK) is measured via the
brake tester (internal scale).
Position B: Weight of the axle (for CARS) is measured via the
shock absorber tester (external scale) and transferred to the
brake tester.