Ocarina

Miniature Analog Amplifier

The Ocarina series of servo-amplifiers was designed to deliver "the highest possible power density".

The Ocarina can deliver up to 1/2 KW of continuous power or 1 KW of peak power in a matchbox size package.The Ocarina is designed for OEMs. It operates from a DC power source in current mode in conjunction with a DC Brush and Brushless motors

The Ocarina can operate as a stand-alone device or as part of a multi-axis system.

There are two categories of Ocarinas, 60 VDC versions and 100 VDC versions. Power to the 60 V Ocarina is provided by a separate 0 ~ 59 V isolated DC power source. Power to the 100 V Ocarina is provided by a separate 0 ~ 95 V isolated DC power source.

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

Ocarina Multi-Axis Board

Feature	Unit	1/60	2.5/60	5/60	10/60	1/100	2.5/100	5/100
Minimum Supply Voltage	VDC	11				20
Nominal Supply Voltage	VDC	50				85
Maximum Supply Voltage (over voltage trip)	VDC	59				95
Maximum Output Power from the drive	W	50	120	240	480	75	180	400
Efficiency at Rated Power	%	up to 99%
Output Voltage	%	> 93 %
DC and Trapezoidal Commutation Continuous Current Limit (Ic)	A	1	2.5	5	10	1	2.5	5
Peak Current Limit (RMS)	A	2 x Ic
PWM Switching Frequency	KHz	32 ±5% (on the motor)
Switching Method		Advanced Unipolar PWM
Weight	gm (oz)	45 gm (1.6 oz)
Dimensions	mm (in)	55 x 15 x 46.5 (2.2" x 0.6" x 1.8")
Mounting Method		PCB Mount
Ambient temperature	°C (°F)	0° ~ 40°C (32° ~ 104°F)

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 please contact McFarland Associates.

Cables

The Ocarina Evaluation Board comes with a full set of cables. In addition, individual cables and cable sets are available.