Electronic Speed Controller

Constructed on a single printed circut board 220/240 volt AC supply  Compatible with computer and transducer signals  Wide speed range with excellent speed holding  Remote control options with no distance limit  Factory preset controls for easy installation  Built-in adjustable dynamic controls, acceleration/deceleration and torque limit  Minimum downtime-controller can be changed in seconds  Many special systems and control options

Specifications

   Input power                  :  240 VAC;+OR-15%
   Output power               :  85 VDC,5.0 A
   Speed Holding             :  Better than 2%
   Standard Features       :  Soft Start 0-90 Sec.,Operator Controls & Maximum Torque Limit
   Protective Features      :  Input fuses,low line voltage,line transients& isolated signal circuits
   Ambient                      :  50 degree C
   Construction                :  Wall/panel Mounting

Tachogenerator

Tachogenerator is a device which generates an electrical output directly proportional to the shaft speed. The voltage thus generated is fed to a speedometer for speed measurement and/or used as feed - back signal for controlling the speed of a rotating machine / equipment. In every automatic control system, since the system performance is directly related to the performance it becomes essential that the


Tachogenerator must satisfy certain minimum requirements such as:

Linear	The rectified output voltage should be strictly linear with respect to the rotational speed
Output signal	the ripple content in the rectified output signal must be as low as possible
Temperature effect	Variations in ambient temperature should have negligible effect on the TG output
Long-term stability	Instability of output cause due to aging of parts, shift in magnetic circuits etc., should be minimum.

Unique features of Tachogenerator

• ALINCO permanent magnet in the rotor assembly gives long term stable operation under varying ambient temperature.
• Large number of poles (48) results in a high frequency output and hence good dynamic response, linearity and wide speed control, along with low ripple content in the rectified output.
• Rotor and stator assemblies are encapsulated with epoxy resin to prevent any ingress of moistures, dust etc.
• Stator assembly is housed in cast iron body to minimize magnetic interaction and consequent losses.
• Grease filled, double shielded ball bearings are used for maintenance free operation.
• Two mounting options-foot mounted and flange mounted.
• Speedometer can be calibrated to suit the customer's requirements.
• Compact and rugged construction provides longer life with excellent performance even under severe environments.
• If required, TG can be supplied with rectifier unit, for DC operations.
  

Technical Specifications

Type	Totally enclosed
Class of insulation	B
Voltage	30V. AC and frequency 600Hz at 1500 rpm
Max. Load Resistance at Output	600 -o-
No. Of poles	48
Linearity	0.5%

Applications for Powermag E C Drive

POWERMAG EC drives are economical and widely used for various industrial applications Cement, Rubber, Chemical, Plastic, Paper, Wire drawing, Mining,Thermal power plants, Blowers, Extruders, Kilns, Material Handling, Pumps, Screw Feeders, Conveyors, Sugar, Tea, Tobacco etc.,

POWERMAG is an simple drive,easily installed and maintained, longlife with no routine maintenance.

Cement Industry

Speed control or helper drive of rotary kiln, Proportional speed drives of supply feeders, clinker feeders and air quenching coolers Operation of constant weighing feeders, exhaust fan or cooler grate drivers for pressure control

Calendar drive

Operations of extruder, pelletizer, granulator etc., Operations of feed pumps, circulating pumps or other process pumps on the outputs of PID regulators.

Paper Industry

Main drive of group drive paper machine Starting motor for paper machine Helper drive for paper machine Drive of rewinder, cutter etc. Pump drive Propotional speed drive of hardboard corrugating machine

Chemical fibre Industry

Co-ordinate drive of resin finishing machine slusher etc.

Mining Industry

Drive of conveyors, feeders etc. Helper drive of long distance conveyors Excavator drive

Other Industries

Dredger Pump Drive Drive of bread baking machine. Operation of fans pumps, blowers etc., Conveyor drive Co-ordinate and helper drive of strip processing machine Speed control of electric weld tubemill, rollers Sugar Indutsry - cane carrier drive Thermal power plants - pulverised coal feeder, raw coal feeder, trolley, drives.

Printing machine drive

Warper drive

Rubber and chemical industries

Electric Wire making

Operation of tubing machine, extruder, wire winding etc.

Torque control of wire drawing machine

Speed control of copper casting machine

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