HAKO Scrubmaster B 115 R, Service Booklet

Page: 87 / 133

Foil 87
9 Drive Control Unit
21) POSITION HANDLE
If upon switching on, the handle micro-switch has already been actuated, error is
signalled (only if SAFETY SWITCH is programmed to HANDLE). Possible causes:
a) Handle micro-switch stuck
b) Incorrect operation
22) INVERSION
If upon switching on, the emergency reverse (deadman) button is depressed, an alarm
is output. Possible causes:
a) Micro-switch for emergency reverse stuck
b) Incorrect operation
c) Incorrect wiring or programming
23) FORW - BACK
An error is displayed if two directions are simultaneously active.
Possible causes:
a) Wiring defective.
b) Direction micro-switch stuck. If none of the causes applies, replace logic!
24) BATTERY
Battery discharged i.e. battery voltage has fallen below 60% of nominal voltage. An
alarm is output. The system switches off but can be re-started. Maximum current then
will be reduced to 50% of programmed maximum current value.
9.1 ATECH / ZAPI
– DC Motor