Motion Control - ElmoMC

Raven

Miniature Military Analog Servo Amplifier for Extreme Environmental Conditions

Current mode servo amplifier for sinusoidal commutation of brushless motor

Advanced unipolar PWM switching method

The Raven is a series of miniature ExtrIQ current mode servo amplifiers for brushless motors. Although highly compact, the Raven can withstand extended environmental conditions and support up to 15 amps continuous current. This high power density servo amplifier can deliver up to 2.4 kW of continuous power and 4.8 kW of peak power in a miniature package.

The servo amplifier offers significant operating features, including excellent output linearity and zero dead band performance. The Raven is a PCB mounted device that enables efficient, cost saving implementation.

Elmo-Miniature Analog Amplifier

Feature

Units

5/60

10/60

15/60

25/60

3/100

10/100

15/100

20/100

2/200

6/200

10/200

15/200

Minimum supply voltage

VDC

10

20

40

Nominal supply voltage

VDC

50

85

170

Maximum supply voltage

VDC

59

95

195

Maximum continuous power output

W

240

480

720

1200

260

800

1200

1600

360

960

1600

2400

Efficiency at rated power (at nominal conditions)

%

> 97

Maximum output voltage

 

Up to 100% of DC bus voltage

Sinusoidal continuous current magnitude

A

5

10

15

25

3.3

10

15

20

2.25

6

10

15

Peak current limit

A

2 x Ic

Dimensions

mm (in)

82 x 62 x 25.4 (3.2" x 2.4" x 1.0")

Weight

g (oz)

250 g (8.8 oz)

Mounting method

 

PCB mount

Product Catalog Number

Feature

Units

 Specification

PWM switching frequency

kHz

32 ± 5% default on motor

Switching method

 

Advanced Unipolar PWM

Current loop bandwidth

kHz

Up to 4

Maximum case temperature

°C (°F)

87 °C (188 °F)

Storage temperature

°C (°F)

-40° C – 100°C (-40 °F – 212 °F)

Ambient temperature

°C (°F)

Non-operating: -50 °C to +100 °C (-58 °F to 212 °F)

Operating: -40 °C to +70 °C (-40 °F to 160 °F)

Temperature shock

°C (°F)

-40 °C to +70 °C (-40 °F to 160 °F) within 3 min

Maximum humidity

%

Non-operating: up to 95% relative humidity non-condensing at 35 °C (95 °F)

Operating: up to 95% relative humidity non-condensing at 25 °C (77 °F) up to 90% relative humidity non-condensing at 42 °C (108 °F)

Maximum altitude

m (ft)

Non-operating: No limit

Operating: -400 m to 155,000 m (-1,300 ft to 510,000 ft)

Vibration

Hz

20 Hz - 2000 Hz, 14.6 g

Mechanical shock

 

Non- operating: ±40 g (1.41 oz), Half sine, 11 msec

Operating: ±20 g (.71 oz), Half sine, 11 msec