52855
May 20, 2026

52855

Part Number: 0-52855 Manufacturer: Reliance Electric, Rockwell Automation Product Name: CVCA Current Voltage Control Amplifier Board Application: Used for FlexPak and CardPak series DC industrial drives Product Status: Discontinued original production, refurbished and tested spare parts available Installation Type: Standard plug-in card installation

Description

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Part Number: 0-52855
Manufacturer: Reliance Electric, Rockwell Automation
Product Name: CVCA Current Voltage Control Amplifier Board
Application: Used for FlexPak and CardPak series DC industrial drives
Product Status: Discontinued original production, refurbished and tested spare parts available
Installation Type: Standard plug-in card installation

Electrical Parameters

Working Power: 24VDC internal drive control power supply
Signal Type: Analog current and voltage feedback signal, given control signal
Adjustable Function: Built-in multi-group precision adjustable potentiometers
Signal Processing: High precision signal amplification and loop correction
Protection Function: Over voltage, over current and short circuit protection
Anti-interference: Optocoupler isolation design, strong industrial anti-interference performance

Main Adjustable Items

Current limit adjustment, current gain adjustment
Voltage offset adjustment, voltage gain adjustment
Acceleration time adjustment, deceleration time adjustment
Stability adjustment, feedback compensation adjustment

Core Functions

  1. Complete current loop and voltage loop signal amplification processing

  2. Realize DC drive speed and torque closed-loop stable control

  3. Adjust drive operation parameters through front potentiometers

  4. Collect internal operating signals and output fault indication

  5. Match main control board to complete drive running logic control

Mechanical Features

Structure: Standard industrial plug-in circuit board
Connection Mode: Rear gold finger connector
Fixed Mode: Front panel screw fixing
Surface Treatment: Conformal coating, moisture-proof and dust-proof

Environmental Conditions

Operating Temperature: 0℃ ~ +55℃
Storage Temperature: -20℃ ~ +70℃
Working Humidity: 10%~90% RH, non-condensing

Installation Steps

  1. Cut off all power supply of the drive

  2. Align the board and insert it into the fixed card slot firmly

  3. Fasten the front fixing screws

  4. Confirm all contacts are in good condition

  5. Power on and adjust corresponding parameters according to actual working conditions

Common Troubleshooting

  1. Drive current unstable: Adjust current gain and current limit potentiometer

  2. Speed response slow: Modify acceleration and deceleration parameters

  3. Abnormal voltage output: Calibrate voltage offset and voltage gain

  4. Drive frequent jitter: Adjust stability and feedback compensation parameters

Compatibility

Fully compatible with old series Reliance DC drives, direct replacement installation, no need to modify wiring and internal programs, consistent with original board functions and parameters.


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