Product Profile of Digital Dc Drives

The ISO 9001:2000 certified company BCH Electric Limited is the producer of Digital DC Drives. There are two ranges of Digital DC Drives: 2 Quadrant and 4 Quadrant. The Digital DC Drives include self-calibration of current and speed that reduce possibility of error and installation time. The Digital DC Drives also feature self-calibration of field. The Digital DC Drives also include internal field converter [for operation in constant torque or power], field economy [reduce the field current when motor is stopped], field boost [increase torque on motor start], predictive control [increase the dynamic response of the motor], integrated multimeter, speed multiramps and "S" ramps. The other salient features of Digital DC Drives are as follows:

• Double speed ring with automatic adaptation

• Feedback from tachometric dynamo, from encoder and armature

• Automatic switching of the feedback in armature in the event of breakdown of

• Control of the current limit in steps or hyperbolic

• 7 levels of speed

• JOG commands

• Auto-reset alarms

• Integrated digital potentiometer

• Timer on digital outputs

• Local control from keyboard

• Insensitivity to phase-rotation [for easy connection]

• Independent supplies to control and power

• 8 programmable inputs

• 4 programmable analog inputs 0-± [plus-or-minus]10Vdc, 0[4]-20mA

• Double encoder input

• Tacho input

• 5 programmable relay outputs

• Auxiliary 24Vdc, ± [plus-or-minus]10Vdc, 5 Vdc

• 1 analog speed output ±[plus-or-minus]10Vdc

• 1 analog current output ±[plus-or-minus]10Vdc

• 2 programmable analog outputs 0-±[plus-or-minus]10Vdc, 0[4]-20mA

• EMC compliant with EN 61800-3 2nd ed