AC Drives

AC Drives

1. AC Drives is fully engineered panels

with necessary switchgear.

2. Panel shall be having three phase indications, Voltmeter & Selector Switches.

3. Supply Voltage for control supply shall be 110VAC. Start/Stop switches push

Buttons, indications, shall be provided for each drive panel.

4. Bus Bar/ Power Cable shall be High conductivity and suitable rated as per drive

requirement. Color Sleeves shall be provided for each panel.

5. Supply, lying routing of field Cable & Wiring accessories shall be not in our scope.

TECHNICAL DATA

Make

SIEMENS

Input Voltage

380V to 480 V 3AC ±10%

Input frequency

47Hz to 63Hz

Output frequency

0Hz to 650Hz (in V/f mode)

Power factor

≥0.95

Inverter efficiency

96% to 97%

Control Method

Linear V/f; quadratic V/f characteristic; multipoint characteristic

(programmable V/f characteristic); flux current control (FCC)

Digital Inputs 6 fully programmable isolated digital inputs; switchable PNP/NPN

Analog Inputs 2 programmable analog inputs

Digital Outputs 3 programmable outputs

Analog Outputs 2 programmable outputs

Protection level IP-20

Protection features for

Under-voltage, over-voltage, overload, earth faults, short

circuits, stall prevention, locked motor, motor over temperature,

inverter over-temperature, parameter PIN protection

TECHNICAL FEATURES

• Microprocessor based operation for all closed loop and open loop functions.

• PWM Technology for generation of variable voltage variable frequency supply

for motor.

• Voltage source DC link converter

• IGBT based inverter section resulting in higher efficiency low losses

• Slip-compensation facility

• Current limiting control

• Voltage boost

• Flexible control functions

• Max./Min. frequency set points

• Ramp smoothing

• Stall protection

• Auto Restart