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October 2004 SC2000 Manual – 177/52301 Rev G Page 11
Note1: Line contactor is optional but can be fitted to offer reverse battery protection, minimise
arcing when the battery connector is inserted and to provide a mechanical break for a
Pump Controller.
Note2: Any 2 of the Optional contactors (except Line) can be reassigned for use as the
second set of direction contactors for dual motor traction systems.
Note3: For dual motor non proportional systems the balancing contactor will be required.
6.1.3 Contactor Types (8 drives available)
The recommended contactors for controllers with current limits up to 500A are:
Line Albright SW200 Continuous Rating
Direction (Forward/Reverse) Albright DC182 Intermittent Rating
Regen Albright SW181 Intermittent Rating
Traction Bypass Albright SW180 Intermittent Rating
Field Weakening Albright SW80 Intermittent Rating
Power Steer Albright SW80 Continuous Rating
Pump Bypass Albright SW180 Intermittent Rating
Recommended contactors for current limits of above 500A are:
Line Albright SW200 Continuous Rating
Direction(Forward/Reverse) Albright SW202 Intermittent Rating
Regen Albright SW201 Intermittent Rating
Traction Bypass Albright SW200 Intermittent Rating
Field Weakening Albright SW80 Intermittent Rating
Power Steer Albright SW80 Continuous Rating
Pump Bypass Albright SW180 Intermittent Rating
It is recommended that 24 V contactors are used together with the chopping feature.
6.1.4 Fuse Ratings - The recommended fuse ratings are:
Main 500 or 750A (air-break)
Power Steer 50A (air-break)
Control 10A (with the specified contactors)
BDI Measure input (con. B, pin 10) 1A
6.1.5 Regen Diode - available from SEVCON (840/44245) and connected as follows:
Cathode Lead connected to regen Contactor common terminal.
Anode Stud screwed into regen Contactor B-.
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