Maestro DC Servo Drives

DC Servo Drives
8 to 25 A


The Maestro range of dc brushed servo drives are manufactured to the latest surface mount specifications ensuring quality, reliability and above all a cost effective solution to low power dc servo applications. Performance matched to a range of permanent magnet dc servo motors – Matador. The Maestro delivers powerful, accurate motor control in diverse applications such as robotics, transfer lines, positioning, indexing. The 20kHz switching frequency ensures silent operation and the Maestro/Matador combination is characterised by the accuracy of its speed and control loops. The Maestro range comes in three physical sizes, Mini, Midi and Maxi.



	Modern PWM DC servo drive
	3 model sizes
	20 kHz switching frequency
	Analogue technology
	CE marked
	Worldwide support

Midi Maestro

105 V AC input

Integral braking resistor

Analogue reference input: ± 10 V (10 kW input impedance)

Error amplifier temperature drift: 1.3 mV/ºC

Minimum tacho signal at maximum speed: 5 V

Working temperate -10 to +50ºC

Midi Maestro
The process of modern electronic packaging technology allowed us to make a compact stand-alone package. This package offers an extremely high specification for single and multi-axis applications. The series of Midi Maestro drives consists of the Following models:
DCD 140* 8/16
DCD 140* 14/28

Drive ratings

Type	Nominal current	Peak current for 2 seconds
DCD 140* 8/16	8A	16A
DCD 140* 14/2	14A	28A

Power stage features
Supply voltage from main power distribution isolated through a line transformer with a 3 phase 105Vrms output.
Max voltage at the motor : Rectified supply voltage minus 8V
PWM working frequency : 18kHz
Internal braking unit : resistance 10 0hm, 200 watts
Minimum motor inductance without external choke : 2.0mH

General
Analogue reference input : +/- 10V (10 kOhm input impedance)
Error amplifier temperature drift :1.3m V/⁰C
Min. tacho signal at maximum speed :5V
Working temperature : -10 to +50 deg C
Adjustments : (All on the customization board)
Full scale speed
Current limit
Ramp gradient
Dynamic gain
Derivative action
Ref. Speed offset compensation

Diagnostics
Red LED indicator when I²t is active
Red LED indicator for tacho loss
Green LED indicator for drive healthy
Control output for drive status
Logic output for I²t limit monitoring
Analogue output for motor current monitoring
Analogue output for requested current (TPRC) monitoring.

Maxi Maestro

150 V AC input

External braking resistor supplied

ADJUSTMENTS
(All on the customisation board)

Full scale speed

Current limit

Dynamic gain

Derivative action

Reference speed offset compensation

Ramp gradient

Maxi Maestro

The maxi maestro range is a high power version of the maestro range. The maxi maestro has an integrated fan. The series consists of one model:

DCD 200* 25/50

Ratings

Type	Normal Current	Peak Current for 2 seconds
DCD 200*25/50	25A	50A

Power Stage Features
Supply Voltage from main power distribution line, through an isolated transformer with a 3 phase 150 Vrms output.
Max voltage at the motor : Rectified supply voltage minus 8V.
PWM Working frequency : 18kHz
Minimum motor inductance without external choke :3.0mH

General
Analogue speed reference input : +/-10V(10kOhm input impedance)
Error amplifier temperature drift : 1.3 µV/°C
Min tacho. signal at maximum speed : 5V
Working temperature : -10 to + 50 °C
Adjustments : (all on the customization board)
Full scale speed
Current limit
Dynamic Gain
Derivative Action
Ref. speed offset compensation
Ramp gradient

Diagnostics
Red LED indicator when I²t is active
Red LED indicator for tacho loss
Green LED indicator for drive healthy
Control output for drive status
Logic output for I²t limit monitoring
Analogue output for motor current monitoring
Analogue output for requested current (TPRC) monitoring.


Midi Maxi Mini Maestro DC Servo Drives