Bomag BW 156 D-3, Service Manual

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Service Training
BW 156/177 D-3/PD-3 - G 1 -
BW 178/179 D-3/PD-3
Electric system
The new single drum rollers of generation 3 are, for the first time, fitted with easy to replace logic control
modules.
Simple trouble shooting can be performed by bridging the input and output potentials.
The control cabinet contains the following modules:
• Generator module (A23),
• Inclination sensor module (B57)
• Diode module
On inclinations and slopes the travel system is controlled by means of inclination sensor (B57).
The optional ASC (Anti Spin Control) enables optimal traction of tires and drum. This ensures safe
travel behaviour on difficult ground and maximum gradability on a hill.
Since the diode module is only used in the logic of the speed range selector, it is installed in a pre-
assembled unit together with the corresponding relays. Due to this measure the number of connecting
cable is reduced and the machine can be easily converted to a different equipment status.
The generator module (A23) is able to convert the different signals of various generator manufacturers
to a D+ signal. Different engines from various manufacturers can therefore be used, without having to
change the vehicle electrics for this purpose.