Bypass Circuit Without Shunt Field Activated
Bypass Circuit Without Shunt Field Activated
bypass contactor closed, the logics starts to monitor drive motor current. When the drive motor current decreases to a preset limit, the logics turns the shunt field OFF. With the shunt field OFF, both armature current and motor speed will increase. If the drive motor current increases above the pre-
MicroCommand Control System
set limit (e.g., climbing a ramp or hill), the logics turns the shunt field back ON. This gives maximum torque to climb ramps or steep grades.
Electrical braking permits the lift truck operator to
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Systems Operation
