Castanet Servo Amplifier

Featherweight Analog Servo Amplifier

Featherweight analog servo amplifier supporting current levels of up to 3 amps.

The Castanet is an ultra-light, .76 oz [21.5 g], analog servo amplifier. Available in two different models, the 60-volt Castanet provides a continuous current level of up to 3.3 amps (60 volt input) and the 100-volt model provides 2.5 amps. This 330 watt peak and 165 watt continuous miniature servo amplifier delivers high power density. The Castanet can operate as a standalone device or as an integral part of a multi-axis motion system best used by OEM's.

The Castanet operates from a DC power source in current mode and controls both DC brush PM motors and brushless PM motors. External power supplies are used to support 7.5 - 96 volt operation. Important operating features include excellent output linearity and zero dead band performance.

The Castanet is a PCB mounted device which enables efficient and cost saving implementation.

Feature	Unit	3/60	2.5/100
Minimum Supply Voltage	VDC	11	20
Nominal Supply Voltage	VDC	50	85
Maximum Supply Voltage	VDC	59	95
Maximum Output Power from the Drive	W	170	180
Efficiency at Rated Power	%	> 99
Output Voltage	%	> 93% of supply VDC at f=32KHz
DC and Trapezoidal Commutation Continuous Current Limit (Ic)	A	3.3	2.5
Peak Current Limit (RMS)	A	2 x Ic
PWM Switching Frequency	KHz	32 +/-5% default on the motor
Switching Method		Advanced Unipolar PWM
Weight	gm (oz)	21.5 gm (.76 oz)
Dimensions	mm (in)	51 x 12.5 x 42 mm (2" x .49" x 1.65")
Mounting Method		PCB mount (with 2mm pitch, 0.51 mm sq pins)

Product Catalog Number:

Highlights

• Operates in current mode
• Separately supplied 11 ~ 59 VDC isolated DC power source (for 60 V models)
• Separately supplied 12 ~ 95 VDC isolated DC power source (for 100 V models)
• Zero deadband
• Excellent linearity
• One differential input is used as current command input
• Motor current monitor
• Current gain change for low inductance motors
• Status indication and remote control functions by four open collector transistors
• External continuous and peak current-limit adjustments
• Interface via 2 mm pitch 0.51 mm square pins
• Package: plated AL 6063T5 with electroless nickel, plastic housing, UL94V0 recognized
• Ultra-compact size: 55 x 15 x 46.5 mm (2.2" x 0.6" x 1.8")
• Weight: 45g (1½ oz).

Motor Output

• Nominal output continuous current: up to 10A
• Peak output current: up to 20A

Built-In Protection

• Shorts between the outputs or between each output and the power return
• Over-temperature
• Under/over voltage
• Failure of internal power supplies
• Latch mode for each protective feature

Accessories

Evaluation Board

An evaluation board that uses standard terminal plugs and D-sub connectors is available. It is accompanied by documentation that describes how to set up the board, and by a complete set of cables.

For more information contact McFarland Associates.

Cables

The evaluation board comes with a full set of cables. In addition, individual cables and cable sets are available.