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P.W.M. 4-Q amplifier for DC-motors

MTR 24...70/8-20, MTR 105/7-14

Technical data

MTR 24...70/8-20

MTR 105/7-14

Nominal voltage

24...70V DC

105V DC

Nominal current

8A

7A

Pulsed current

20A

14A

Recommended secondary voltage of transformer

20...70V AC

30...95V AC

Auxiliary voltage

15-0-15V AC

Auxiliary voltage for external additional

±12V DC / 20mA

Maximum power supply

95V DC

130V DC

Minimum power supply

20V DC

30V DC

Basic frequency (against ground)

9.5kHz

Frequency between output binders

19kHz

Maximum ambient temperature

45°C

Maximum temperature of dissipator

90°C

Minimum load inductance

0.8mH

Maximum tacho voltage

±20V DC

Fitting position

vertical

Heat dissipation

convection

Weight

approx. 1.4kg

Option

Battery supply possible with add-on circuit SNT.

Article code

RMTR070/08V02

RMTR105/07V02.1

Dimensions / Test circuit

  • Dimensions: MTR 70/8-20; MTR 105/7-14
  • Test circuit: MTR 70/8-20
Inputs set value 1+2, tacho, current set value, disable/enable, integral disable, stop
Outputs motor connection, ready for operation, I²t-information, armature current monitor, auxiliary voltage
Adjustments set value 1+2, tacho, gain, offset, EMF, IxR, effective current, ramp
LED-information ready for operation, I²t-information, error
Built-in checking temperature of heatsink, output current, intermediate circuit voltage
Options -
Suitable accessories front panel (18TE), support for pcb´s, toroidal transformer, chokes
Included in delivery amplifier, connectors, manual


Operation modes: tacho-, IxR- or current control selection can be made by soldering bridge.

The amplifier is available also as a follower type MTNR 24...70/8-20 or MTNR 105/7-14.