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TVR 6500

Control Unit for Motorised Variable Transformers

TVR 6500

Unique Selling Point


  • Voltage range 80 - 265 VAC
  • Additional switching

Description


Control Unit for Motorised Variable Transformers

Variable power supplies within the mains voltage and high power range, in the most of the cases, are realised with variable transformers. In general, it is not sufficient to just adjust the voltage or resp. the power, but it is often necessary to keep the adjusted value constant. For this purpose, the variable transformer is driven by a motor which is controlled by a suitable electronic regulator.

The unit described below, is such an electronic regulator for controlling a DC motor with a permanently excited field.
The regulator essentially comprises the following main components:
A power supply, within a voltage range of 80 to 265 VAC, provides the internally required
operating voltages and the operating voltage for the servo motor.

The regulator circuit compares the selected set point voltage with the fed back actual voltage, and in case of deviation, produces an error signal, corresponding in amplitude
and polarity, which is transmitted to the motor drive circuit.
The actual value input is followed by a precision rectifier which generates the required signal voltage for the regulation circuit from the connected actual value voltage (DC/AC).


The motor drive circuit, in case of deviation between set point and actual value, receives an error signal from the regulator circuit. This signal is converted into a variable
pulse-duty factor. The pulse-duty factor determines the adjusting speed of the motor and the direction of rotation of the motor. The input signals of the end limit switches
are logaically connected to the direction of rotation signals and thus limit the adjustment range of the drive gear.

Technical Data


Your contact: +49 - 212 8804-0 • info@reo.de

TVR 6500

Control Unit for Motorised Variable Transformers

Technical data

Type

TVR 6500

 Set point

 0...10 V/0...20 mA

Witching

Switching for two set points (closed = second set point)

Switching for testing (closed = manual operation)

(without regulation)

Reference voltage

Internal 10 V - Reference voltage

Internal set point setting option

possible

Measured voltage input

0...10 V, DC

Measured voltage input

0...10 V SS AC / 0...7Veff  AC

Internal voltage measurement transformers

3x0-500V or 0-500 V

 or after switching (Internal) 3x0-500V or 0-500 V

 

Inputs for limit switches (inhibit)

 

Proportional speed control correction

 

Adjustable motor response

 

 Adjustable regulation characteristic (P-term)

Dead time

ca. 200ms

Design

Built into a snap-on module for DIN rail mounting

Connection

Terminal covers

Motor voltage

24 V, DC - 1 A max.

Supply voltage

80V-265 V AC

Setpoint

0...10 V/0...20 mA

 

Your contact: +49 - 212 8804-0 • info@reo.de

TVR 6500

Control Unit for Motorised Variable Transformers

Dimension drawing

 

Your contact: +49 - 212 8804-0 • info@reo.de

TVR 6500

Control Unit for Motorised Variable Transformers

Wiring diagram

Your contact: +49 - 212 8804-0 • info@reo.de

TVR 6500

Control Unit for Motorised Variable Transformers

Wiring diagram