Avat · Stepper Motors & Drives
Avat 1251 1709 repair
Component-level repair for the Avat 1251 1709 (card, stepper motor serv), onsite or sent in from anywhere in India. The diagnosis and repair cost are confirmed before any work starts.
Cost confirmed before any work starts · Warranty of 30 days to 6 months
At a glance
The Avat 1251 1709
- Manufacturer
- Avat
- Model / part number
- 1251 1709
- Also searched as
- 12511709
- Description
- Card, stepper motor SERV
- Category
- Stepper Motors & Drives
- Service
- Diagnosis and component-level repair, onsite or ship-in
- Warranty
- 30 days to 6 months, confirmed before work starts
Avat equipment in this catalog is listed by model or part number. Send the model from the nameplate and the fault, and it will be matched to an engineer who works on that kind of unit.
Common faults
What usually fails on a unit like the 1251 1709
Stepper motors and drives are simple but run in demanding, fast-indexing duty. Drive faults usually sit in the output stage or supply; motor faults in bearings, windings and connectors.
Lost steps and stalling
Weak drive current, a failing supply, mechanical binding or a worn motor.
Drive output stage failure
Shorted output transistors after a winding or cable fault.
Overheating
Motor current set too high, or drives without enough cooling.
Bearing wear and noise
Worn motor bearings cause noise, resonance and position errors.
Connector faults
Loose or corroded connectors give erratic movement.
Motor
Motors are checked for winding insulation, bearings and feedback, and run after repair. If it carries an encoder, the encoder is checked for correct signals and alignment.
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
- Check the mechanism turns freely by hand with power off.
- Check connectors and cables.
- Note the drive's alarm LED state.
Leave to a specialist
- Drive board repair.
- Setting current and microstepping to suit the load.
Getting it fixed
How to get the 1251 1709 repaired
What to send with it
- The drive and, if possible, the motor.
- The supply voltage and the current setting.
- What the axis does and where it loses position.
Onsite or ship-in
Technicians work onsite from our Hyderabad base and travel to plants across India; anything that can be removed can also be sent to MachineryFix from anywhere in the country.
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
1251 1709 repair questions
Should the motor be sent with the Avat 1251 1709?+
If the fault is lost steps or stalling, yes: testing them together shows whether the drive, the motor or the mechanics are at fault.
Does the Avat 1251 1709 have to be sent in, or can an engineer come to the plant?+
Either. An engineer can diagnose it in place and repair it there or take it away, or the unit can be sent to MachineryFix from anywhere in India. The diagnosis and repair cost are confirmed before any work starts.
Is MachineryFix connected to Avat?+
No. Avat and the model name are used only to identify the equipment. MachineryFix is an independent repair service and is not affiliated with or endorsed by Avat.
Other manufacturers
Stepper Motors & Drives from other makers
Avat and 1251 1709 are named only to identify the equipment. MachineryFix is not affiliated with or endorsed by Avat.
1251 1709 down?
Send the fault and what the machine was doing. We'll match an engineer who works on it.