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

MTRF 25...61/5-15

The MTRF 25...61/5-15 is a p.w.m. transistor amplifier executed in 19" technology. As 4-Quadrant amplifier it is able to drive and brake permanent excited DC-motors in both directions. A maximum current of 3 times of the nominal current value is put at disposal of the motor during a period of 3 seconds.

Technical data

	MTRF 25...61/5-15
Nominal voltage	25...61V DC or 20...52V AC
Nominal current	5A
Pulsed current	15A
Voltage range of the set value inputs	0...±10V
Range of input attenuator	17...100%
Max. tacho voltage	±20V
Range of tacho attenuator	17...100%
Band width of the current ampifier	1kHz
Clock frequency (against ground)	approx. 9kHz
Frequency of the current ripple	approx. 18kHz
Min. load inductance	0.8mH
Efficiency	95%
Ready for work; relais	50V / 50mA (Error = open)
Ramp	2.5...60ms
Aux. voltage for ext. add. circuit	±12V / 20mA
Ambient temperature	-20°C...+45°C
Fitting	vertical
Heat dissipation	convection
Weight	approx. 0.44kg
Article Code	RMTRF061/05V04

Functions

I²t-current limit
Internal / external pulsed current limit chose able by jumper
Ramp
Final stage - inputs
Input for integral part - switch off
Protection circuit for over voltage -current and -temperature
4 operation modes: encoder / tacho / IxR / current control by jumper chose able
Aux. voltage not necessary

* Attention:
All signal/control cables must be shielded. Please observe minimal cross section of cable according to VDE 700.

Dimensions

Dimensions: MTRF 25...61/5-15
Test circuit: MTRF 25...61/5-15

Auxiliary equipment

including	connector, manual
Auxiliary equipment	front panel (8TE), ballast circuit MABA, support for pcb, chokes, toroidal transformer (weight approx. 3.5kg)