Class 8839 Econoflex™ AC Drives
Sample Specifications
F.For a fault condition other than a ground fault, short circuit or internal fault, an auto restart function will provide up to 6 programmable restart attempts. The time delay before restart attempts will be 30 seconds.
G.Upon loss of the analog process follower reference signal, the AC Drive shall be programmable to display a fault.
H.The AC Drive shall have a
I.The output frequency shall be software enabled to fold back when the motor is overloaded.
2.09 Adjustments and Configurations
A.The AC Drive will be factory programmed to operate all specified optional devices.
B.The acceleration and deceleration ramp times shall be adjustable from 0.05 to 999.9 seconds.
C.The memory shall retain and record run status and fault type of the past 8 faults.
D.The software shall have a Energy Economy function that, when selected, will reduce the voltage to the motor when selected for variable torque loads. A constant V/Hz ratio will be maintained during acceleration. The output voltage will then automatically adjust to meet the torque requirement of the load.
2.10 Keypad Display Interface
A.The keypad display interface shall offer the modification of AC Drive adjustments via a touch keypad. All electrical values, configuration parameters, I/O assignments, application and activity function access, faults, local control, and adjustment storage, and diagnostics shall be in plain English. There will be a standard selection of 4 additional languages
B.The display will be a high resolution, LCD
C.The AC Drive model number, torque type, software revision number, horsepower, output current, motor frequency and motor voltage shall be listed on the drive identification portion of the LCD display.
D.The keypad display shall consist of programmable function keys that allow both operating commands and programming options to be preset by the operator. A hardware selector switch shall allow the terminal keypad to be locked out from unauthorized personnel.
2.11 Operator Controls
A.The control power for the digital inputs and outputs shall be 24 Vdc.
B.The internal power supply shall incorporate automatic current
C.
D.Two
E.The Drive Controller enclosure shall have the following dedicated operator controls as required for the application:
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•Manual Speed Potentiometer
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•Power On (red) LED indicator
•Drive Run (green) LED indicator
•Drive Fault (yellow) LED indicator
•Auto Mode (yellow) or Bypass Run (yellow) LED indicator
09/2003
209
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