Rotary cam limit switches
TER GF4C and similar rotary (geared) cam limit switches: cams, microswitches, gearing, terminals and shaft checked, then repaired or refurbished.
Worldwide · Wind turbine electronics
Wind turbine electronics repair and refurbishment, worldwide
Star Automations repairs and refurbishes wind turbine electronics: rotary cam limit switches such as the TER GF4C, encoders, pitch and yaw electronics and converter cards. We do this work for customers worldwide and keep refurbished parts in stock. Star Automations is an independent multi-brand repair company and is not an OEM service centre.
01Service
What we repair and refurbish
Encoders
Encoder replacement, reprogramming and refurbishment for limit-switch and motor-feedback encoders.
Pitch and yaw electronics
Pitch drives, controller boards and converter cards. See the pitch motor and drive repair and controller board repair pages.
Worldwide
Send from any country. We repair, refurbish and ship back, with documents for cross-border repair and return.
02Example
Example: TER GF4C rotary cam limit switch with encoder
This TER GF4C rotary cam limit switch, with its encoder, came from a wind turbine and is on our bench. We repair and refurbish this unit, replace or refurbish the encoder, and supply tested units from stock. See the TER GF4C in the shop.
+Power
Wind turbine power inverter and converter boards, and refurbished parts for sale
We repair wind turbine power inverter and converter boards and control cards, and supply refurbished, tested wind turbine electronics for sale: limit switches such as the TER GF4C, encoders and boards. Send the turbine make and the part label. See also wind turbine converter and control card repair.
03Problems
Common limit switch and encoder problems
Limit switch no longer trips at the set position
Worn or loose cams, a shifted cam setting, a worn gear train or a failed microswitch. The unit is stripped, checked and reset.
Position signal drifts or is lost
A failing encoder or potentiometer, damaged cable or moisture in the housing. The encoder is replaced or refurbished and checked.
Moisture, corrosion or vibration damage
Nacelle conditions wear seals, terminals and microswitches. We clean, replace worn parts and test.
Unit works on the bench but faults on the turbine
Intermittent contacts or the wrong cam setting. Send the turbine make, the fault log and photos.
04Applications
Where the same rotary cam limit switch is used
Wind turbines
Yaw and pitch end-position and turn counting.
Cranes and hoists
Hoist, travel and slewing limits.
Lifts and gates
Travel limits and position signalling.
Machines and packaging lines
Cam-timed switching and position control.
05Questions
Wind turbine electronics questions
Do you repair TER GF4C rotary cam limit switches?
Yes. Star Automations repairs and refurbishes TER GF4C rotary cam limit switches, including the encoder fitted to them, and can supply refurbished units from stock.
Do you repair wind turbine electronics?
Yes. We repair wind turbine pitch drives, controller boards, converter cards, limit switches and encoders, and have already done this work.
Can I send a unit from outside India?
Yes. We work worldwide. Send the part, the turbine make and a photo of the label, and we quote the repair or a refurbished replacement.
What is a rotary cam limit switch?
A rotary cam limit switch is a geared switch that turns with a shaft and operates a set of cam-driven switches at set positions. It is used for end-position limits and position signalling.
Why did my cam limit switch stop working properly?
Common causes are worn cams or gears, a shifted cam setting, a failed microswitch, moisture or a failing encoder. A bench test finds the cause.
Can you replace or refurbish the encoder in the limit switch?
Yes. The encoder is replaced or refurbished and the unit is tested.
Is the same unit used outside wind turbines?
Rotary cam limit switches with the same nameplate are used on cranes, hoists, lifts, gates and machines, so we supply them for those applications too.
What should I send for a quote?
A photo of the label or nameplate, the turbine or machine make, the fault and its log on WhatsApp +91 97866 22233 or the request form.
Is Star Automations an OEM service centre?
No. Star Automations is an independent multi-brand repair company and is not an OEM service centre.