DC Tachogenerators

DC Tachogenerators give you accurate DC Voltage output proportional to speed of its mover. They are widely used in applications for feedback and display purposes.

• Compact and Light Weight and can substitute a range of imported / indigenous tachos
• High Linearity
• Low Ripple
High Stability and Extreme Reliability in Hostile Industrial Environments

PRINCIPLE OF OPERATION :

The DC Tachogenerator is a speed transducer, which develops DC voltage proportional to speed of the motor connected to it.
Permanent Magnetic field eliminates the need of external excitation and offers extremely reliable and stable outputs. The accuracy of the tachogenerator decides the maximum accuracy of speed of the controlled machine.

FEATURES :

The tachogenerator incorporates following features to ensure reliable and long service in most hostile environments.

1. Silver graphite brushes to ensure long life, minimum voltage drops, and spark free commutation.
2. Prelubricated and sealed precision ball bearing used for long maintenance free operation.
3. Brush holders and brushes designed to ensure smooth movements, equal brush tension and spark free operation.
4. Electrolytic grade copper segments molded and machined to close tolerances in commutator for sparkless commutation and minimum wear. Use of mica insulation between segments to offer maximum dielectric strength and stability.
5. Armature built with special silicon steel stampings and wound with polyester grade class ‘F’ enameled wire and impregnated for high electrical and strength.
6. Armature dynamically balanced for vibration free rotation, sparkless commutation and low ripple content.
7. Totally enclosed construction to offer protection from hostile industrial environments.
8. Easy accessibility of brushes and commutator for maintenance.
9. Powder coated / Stowing Paint for good finish, corrosion free outer body.

OPTIONS :

1. Any deviation in electrical and mechanical details from our standard models.
2. Temperature compensation.
3. Foot mounting, terminal box, and flexible couplings.
4. Hollow shaft versions available.

SPECIFICATIONS: (Standard Models)

IMPORT SUBSTITUTION :

We are well known for our ability to offer import substitute tachos. We offer numerous import substitutes models from manufacturers like: Hubner (Germany) , Radio Energie (France) , GE (UK), Reliance Electric Co. (USA), Siemens (Germany) , Sanyo Denki (Japan) , SEM (UK) , Tachoduktor (UK), Baumuller (Germany) , Bauer (Germany), Indramat (UK) etc.
We offer equivalent models of all Indigenous manufacturers.

REPAIRS :

We offer repair / recalibration services for all type of Imported tachos. Please accept this from your customer subject to confirmation from our factory.

AC Tachogenerators

AC Tachogenerators give you AC Voltage output proportional to speed of its mover. They are generally used in applications for feedback and display purposes.

Specifications:

• Current: Up to 50 mA
• Speeds: Up to 4000 rpm
• Voltages: 4V to 40 V / 1000 rpm
• Pole Design: 8 and 48

Standard Features :

1. Compact and Light Weight
2. High Linearity
3. High Stability and Extreme Reliability in Hostile Industrial Environments

Standard Options (EXTRA) :

• Supplied with Callibrated Meters for display of Speed (Rotary Speed in rpm and linear speed in mtr. min etc.)

AC Tachogenerators give you AC Voltage output proportional to speed of its mover. The frequency of the output also changes in direct proportion to the speed. They are generally used in applications for feedback in less critical applications and display purposes.

FEATURES :

1. High Stability and Extreme Reliability in Hostile Industrial Environments.
2. High Linearity in output voltage and frequency.
3. Compact, Light Weight and can substitute a range of imported / indigenous tachos.
4. Maintenance free operation as no wear & tear is involved inside the tacho.

OPTIONS :

1. Supplied with Calibrated Moving Coil Meters for display of Speed (Rotary Speed in rpm and linear speed in meter per min etc.).
2. Any deviation in electrical and mechanical details.
3. Foot mounting, flexible couplings.

SPECIFICATIONS :

ORDERING / SELECTION CRITERIA (TACHOS) :

1. Please note that following minimum parameters are required when you order tacho:
   A. Output Voltage (per thousand rpm)
   B. Maximum speed: especially when the same is more than 4000 rpm.
2. Mounting / Mechanical Dimensions: Clarity in mechanical overall dimensions is required. Especially while offering Import substitute tacho it is very critical. Be sure to inform Shaft size, keyway, flange / foot details, terminal box / cable entry orientation etc.

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