37 models · 12 manufacturers
DC Drives repair
Thyristor DC drives on mills, extruders, winders, cranes and older process machinery. Thyristor DC drives still run mills, extruders, winders and cranes across Indian plants. Their faults are well understood and almost always repairable: thyristors, firing circuits, field supplies and feedback.
Manufacturers
DC Drives by manufacturer
Models
DC Drives in the catalog
A selection. Pick a manufacturer above for the full list, or search by part number at the top of the catalog.
| Model / part | Manufacturer | Actions |
|---|---|---|
| 19C100DC drive, minpak plus VS | Reliance Electric | |
| 590DC drive series | Eurotherm | |
| 590Power supply, DC drive series analog | Eurotherm | |
| 590Series model no- 590C/0700/9/0/0/3/0/42/000 dc drive | Eurotherm | |
| 590Series model no- 590C/1100/6/3/0/1/0/00/000 dc drive | Eurotherm | |
| 590Digital series 590C-0350-5-3-0-1-0-00-000 dc drive | Parker | |
| 590PDC drive | Eurotherm | |
| 590P-53318032-P00-U4V0 590P/0180/500/0011/UK/ARM/0/230/0DC integrator drive | Parker | |
| 6000 6080DC drive Unitrol | ABB | |
| 80-428DC drive ipswitch | Ashe Controls | |
| AH500075U002Control card, DC drive | Parker | |
| C98040-A1200-P4-01-Z186SIMOREG dc-converter dc drive | Siemens | |
| D240-140 6RA2431-6DS22-0SIMOREG DC drive | Siemens | |
| DG1-46UController, DC drive DC motor | Reliance Electric | |
| Drive, offset machine DC drive card roller table | Roland | |
| Mentor II dc drive | Control Techniques | |
| MIDIPACK-4DC drive | Larsen & Toubro | |
| PCM23011A-SPCE.0497DC drive card | Minarik | |
| PLX-20 Lantor-D7DC drive 51AMP | Larsen & Toubro | |
| Power card, DC drive | Parker | |
| Type S2 5HP dc drive | Reliance Electric | |
| Type S2 dc drive | Reliance Electric | |
| YPP-109DC drive, keypad development TYRAK 8D | ABB |
- 19C100DC drive, minpak plus VS · Reliance Electric
- 590DC drive series · Eurotherm
- 590Power supply, DC drive series analog · Eurotherm
- 590Series model no- 590C/0700/9/0/0/3/0/42/000 dc drive · Eurotherm
- 590Series model no- 590C/1100/6/3/0/1/0/00/000 dc drive · Eurotherm
- 590Digital series 590C-0350-5-3-0-1-0-00-000 dc drive · Parker
- 590PDC drive · Eurotherm
- 590P-53318032-P00-U4V0 590P/0180/500/0011/UK/ARM/0/230/0DC integrator drive · Parker
- 6000 6080DC drive Unitrol · ABB
- 80-428DC drive ipswitch · Ashe Controls
- AH500075U002Control card, DC drive · Parker
- C98040-A1200-P4-01-Z186SIMOREG dc-converter dc drive · Siemens
- D240-140 6RA2431-6DS22-0SIMOREG DC drive · Siemens
- DG1-46UController, DC drive DC motor · Reliance Electric
- Drive, offset machine DC drive card roller tableRoland
- Mentor II dc driveControl Techniques
- MIDIPACK-4DC drive · Larsen & Toubro
- PCM23011A-SPCE.0497DC drive card · Minarik
- PLX-20 Lantor-D7DC drive 51AMP · Larsen & Toubro
- Power card, DC driveParker
- Type S2 5HP dc driveReliance Electric
- Type S2 dc driveReliance Electric
- YPP-109DC drive, keypad development TYRAK 8D · ABB
Common faults
What usually fails on DC Drives
Thyristor and fuse failures
Failed thyristors or semiconductor fuses after a commutation failure, a flashover at the motor or a supply disturbance.
Firing and synchronisation faults
Faults in the pulse transformers or firing board cause uneven current, humming and speed instability.
Field supply faults
Field loss trips, or a motor that overspeeds, point to the field controller or field winding.
Speed feedback problems
A worn tachogenerator, a loose coupling or a failed encoder interface gives speed hunting or overspeed trips.
Armature overcurrent
A mechanical jam, a failing motor commutator or a current-loop fault in the drive.
First checks
What to check before calling an engineer
Isolate and lock out the supply, and wait for stored energy to discharge, before opening anything.
Safe for plant staff
- Record the fault code and whether it trips at start, at speed or on stopping.
- Inspect the motor's brushes and commutator.
- Check the tachogenerator coupling for slip or wear.
Leave to a specialist
- Testing thyristors and firing circuits.
- Adjusting current and speed loops.
- Any work on the armature or field circuits with the supply connected.
Warranty. Repairs carry a warranty of 30 days to 6 months, depending on the item and the repair; the exact term is confirmed before work starts.
FAQ
DC Drives repair questions
Is the DC drive still repairable when spares are no longer sold?+
Usually. Thyristors, fuses, capacitors and most board components are standard parts, so older DC drives can be repaired long after the maker stops supporting them.
Should the DC motor be checked too?+
Yes, if the drive failed with an overcurrent or flashover. Worn brushes or a damaged commutator will take out a repaired drive again.
More manufacturers
DC Drives from other manufacturers
Don't see your model?
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