Motion Control - ElmoMC

Butterfly

Analog Amplifier for Extreme Environmental Conditions

Halls feedback, current mode, PWM servo amplifier for trapezoidal commutation

The Butterfly is a series of miniature ExtrIQ current mode servo amplifiers for DC brush and brushless motors. Although extremely compact, the Butterfly can withstand extended environmental conditions and support up to 15 amps continuous current. This high power density servo amplifier can deliver up to 2800 W of peak power or 1400 W of continuous power in a matchbox size package weighing only 1.6 oz (45 g).

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

Miniature Analog Amplifier

Standards

Butterfly Documentation

Feature

Units

15/48

5/60

10/60

15/60

2.5/100

5/100

10/100

15/100

Minimum supply voltage

VDC

11

11

20

Nominal supply voltage

VDC

42

50

85

Maximum supply voltage

VDC

48

59

95

Maximum continuous power output

W

700

280

570

850

230

460

920

1400

Efficiency at Rated Power (at nominal conditions)

%

Up to 99%

Maximum output voltage

 

93% of DC bus voltage at f=32 kHz

DC and trapezoidal commutation continuous current limit (Ic)

A

15

5

10

15

2.5

5

10

15

Peak current limit

A

2 x Ic

Weight

g (oz)

45 g (1.6 oz)

Dimensions

mm (in)

55 x 15 x 46.5 (2.2" x 0.6" x 1.8")

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