Page 6 SC2000 Manual – 177/52301 Rev G 22
nd
October 2004
4 SAFETY
4.1 Electric vehicles can be dangerous. All testing, fault-finding and adjustment should be carried
out by competent personnel. The drive wheels should be off the floor and free to rotate during
the following procedures. THE VEHICLE MANUFACTURER'S MANUAL SHOULD BE
CONSULTED BEFORE ANY OPERATION IS ATTEMPTED.
4.2 The SC2000 controller contains a triple fail-safe system to give a high level of safety. If the
diagnostic LED is not illuminated or flashes, the safety circuit may have tripped and the truck
may not drive.
4.3 To ensure continued safety of the SC2000 system, the fail-safe circuit should be checked
whenever the truck is serviced (See 4.7). The period between checks should not exceed 3
months.
4.4 THE BATTERY MUST BE DISCONNECTED BEFORE REPLACING OR ATTEMPTING ANY
REPAIRS OF THE CONTROLS.
4.5 Before working on the controls disconnect the battery and connect the B+ and B- controller
terminals via a 10 ohm 25 watt resistor to discharge the internal capacitors.
4.6 Never connect the controller to a battery with it's vent caps removed as an arc may occur due
to the controller's internal capacitance when it is first connected.
4.7 FAIL-SAFE CHECK:
4.7.1 Ensure the drive wheels are CLEAR OF THE FLOOR AND FREE TO ROTATE.
4.7.2 Switch on, select seat switch, release brake, select direction and FS1, the wheels
should rotate and the diagnostic LED should give a steady illumination.
4.7.3 Switch off, disconnect battery and connect the F1 and B- terminals together with, at
least, 10mm
2
cable. Ensure that no other fault that would allow drive is present.
4.7.4 Reconnect battery, switch on key with direction in neutral. The LED should stay off.
Select a direction and check that the direction contactors do not close and the wheels
do not rotate.
4.7.5 Switch off at key and remove the F1/B- connection. Switch on at key, reselect the
power-up sequence and check that the LED illuminates and the truck wheels rotate.
IF THE TRUCK DRIVES IN 4.7.4 THE CONTROLLER IS FAULTY AND MUST BE
REPLACED.
4.8 NOTES:
4.8.1 As blow-out magnets are fitted to contactors (except 24V) ensure that no magnetic
particles can accumulate in the contact gaps and cause malfunction. Ensure that
contactors are wired with the correct polarity to their power terminals as indicated by
the + sign on the top moulding.
4.8.2 The SC2000 controller must NOT be used with permanently-connected on-board
chargers or damage to the system may result.
To Next Page
Loading...
Need help?
General