Repair
Repair Price: $ 1,234.00
Purchase
CSL Part Number: 87744
Product Overview: The Parker 638 Series Servo Drive is a digital servo controller available in 2A and 4A configurations for precise motor control applications. This compact drive regulates servo motor speed and position through digital control algorithms and feedback processing. It operates with DC bus voltage and requires proper ballast modules for voltage regulation. Commonly used in paper processing machinery and automated manufacturing equipment, it features integrated diagnostic error codes and programmable parameters. The unit includes a 24V power supply section and utilizes standard feedback interfaces for encoder or resolver inputs.
Category: Servo Controls
Manufacturer: Parker
Manufacturer Part Number: 638A/02-3-F-0-STO-2CA-000-RD2
Series: 638 Series Servo Drive
Also Known As(AKA): 638 Series
Common Failures
Units may exhibit motor movement issues accompanied by error codes such as "over voltage on DC bus" or firmware-related error codes. Error codes 2, 4, or 6 may indicate component-level concerns or firmware discrepancies.
Repair Approach
The repair process may involve replacing faulty components, such as damaged connectors or specific electrolytic capacitors within the power supply. In cases involving error code 6, capacitor replacement is often evaluated as part of the repair.
Testing & Quality
Repaired units undergo testing, which may include burn-in testing and component-level evaluation. Units that pass testing are returned to service. In some instances, tests may identify firmware-related issues that require additional review.
Limited Repair
The Parker part number is only available as a limited repair at our facility. Repairs to this item may be limited due to several reasons:
- Availability of parts
- Less than 100% test ability due to required support equipment
To have us attempt a repair on your Parker part follow these steps:
Step 1 -
Click the Repair Now button above to add the part and complete the RMA form.
Step 2 -
Print the RMA form that is sent to your email, and put it in the box with the parts for repair.
Step 3 -
Mail the box to the address on the RMA.
After we receive your item, we will perform an inspection and an authorization to repair will be sent for your approval. Work will begin after your authorization is received.
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