Scanreco RC 400 - Connecting ON;OFF Functions

Installation instructions 4 - 6
Doc.nr : Rc400-Manuale_v20_e.doc
4. Next install any ON/OFF functions required. The ON/OFF cable is marked EX and should
be connected to the "ON-OFF" contact on the electronicbox.
· Normal ON/OFF function usage is to drive a signal / beep function, throttle lever,
changeover valves, motor start/stop etc. See connection recommendations for the
starting of a motor !
Each ON/OFF function can drive a maximum of 1.2 Ampere.
· The output function is disconnected automatically if loaded by more than 1.2 Amp., i.e.
the drive output is not damaged.
( For higher output drive an auxiliary relay can be mounted. See connection schematic
for starting of vehicle motor ).
5. Connect the power supply cables via the crane emergency stop box to the electronicbox +
supply voltage + and - to ground.
Cable number : 1 ( +24 VDC , +/-20% , max. 5% V peak to peak ) Marked : +
Cable number : 2 ( 0 VDC / GROUND ) * Marked : -
*Check that the same earth potential exists between the Scanreco earth cable (No. 2 ) and the vehicle's
battery minus during max. loading ( i.e. there is not a potential drop /difference as a result of poor
earthing or the cable cross sectional area being insufficient).
Standard car type fuses are located inside the electronicbox. ( Plus fuse: 10 Amp. and minus fuse:
30 Amp. Automatic fuses may NOT be used in the electronicbox ).
Use supply cable with the correct dimension ( min. 2.5 mm
2 )
, so that the cable bushings in
the crane emergency stop box seal properly. Make sure that all cable terminals are well
tightened.
For back end mounted cranes : Use supply cable of min. 4.0 -6.0 mm
2
! ! !
Use plenty of grease in the emergency stop breaker and its screws and the supply cable.
Connect power from the vehicle battery via the vehicle's ignition switch or power outlet.
Warning ! Volvo trucks which break main power on the earth side ( not the plus side ) :
Make very sure that the electronicbox earth is connected correctly, i.e. that the earth for the electronicbox
is also disconnected !!