Repair
Repair Price: $ 624.00
Purchase
CSL Part Number: 25504
Product Overview: The Varispeed R400 DC Motor Control is a 2 HP thyristor-based drive with field control for regulating DC motor speed and torque in industrial applications. Manufactured by Danfoss (formerly GRAHAM), this model features SCR power control circuitry and provides bidirectional motor operation. It is commonly used in paper processing equipment and other machinery requiring precise DC motor speed control. The unit includes armature and field voltage regulation, enabling applications that demand variable speed with constant torque or field weakening for extended speed ranges.
Category: DC Motor Controls
Manufacturer: Danfoss
Alternate Manufacturer Names: GRAHAM
Manufacturer Part Number: 176B4001
Series: VariSpeed R400
Other Synonyms: GRAHAM
Common Failures
This product can experience issues related to power surges and component wear. Typical symptoms may include abnormal operation or lack of response.
Repair Approach
Our repair process includes cleaning, inspection, and replacement of damaged components as needed. After reassembly, the board is tested to verify proper functionality.
Testing & Quality
Repaired units undergo functional testing, including verification with appropriate test loads. Tests confirm that the unit operates as expected. All repaired units are subject to CSL's standard quality control procedures.
Service and repair your broken Danfoss part
We can repair your Danfoss model 176B4001 in our facility. Let our skilled technicians get your Danfoss back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
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