HAKO Scrubmaster B 120 R Service Booklet page 71

9. Drive
A1 – forwards (active when B- is connected) from A02:X6.2
A2 – reverse (active when B- is connected) from A02:X6.3
A3 – release for driving from drive potentiometer switch B03 (active when B- is connected)
A4 – release from machine control unit (seat contact) (active when B- is connected)
A5 – not used
A6 – not used
A7 – foot brake input from switch S10; if B- is connected, the machine is slowed down until standstill
A8 – supply speed control B03 (negative)
A9 – setpoint from speed control B03
A10 – control voltage from key switch
A11 – control power supply for small consumers (max. 3 A) (e.g. –K02, direction switch –A02:X6.1 and brake)
A12 – main relay release (B-) –K02 – power supply for drive control
A13 – brake release (B-)
A14 – not used
A15 – 12 V supply for encoder
A16 – 5 V supply for speed control B03
Sheet 71