Dual Channel Linear Amp
- Extremely low electromagnetic interference (EMI)
- Dual independent 400W peak amplifiers
- DSP control for sine wave commutation
- 5/10/25X analog encoder multiplier
- Built-in amplifier over-temperature and I 2 t motor protection
- No external heat sink required, built-in heat sink and fan
- Drives 3-phase brushless, brush, or voice coil DC motors
- Successfully implemented in:
- Pick and Place Equipment
- High Speed Part Transfers
- Electronics Assembly
Dual Channel Low Noise Amplifier
The Dual Channel Linear Amplifier with linear output current drive virtually eliminates electromagnetic interference (EMI) for applications with sensitive sensing electronics or where system materials are sensitive to electromagnetic fields.This compact, highly integrated package contains the drive for two independent 3-phase brushless motors, associated heat sink with forced air cooling, and a 40 VDC linear bus power supply with an isolated 115 VAC or 230 VAC IEC-320 power input.
The on-board DSP self-teaches the most efficient commutation angle for each drive providing smooth 3-phase sine wave commutation based on quadrature encoder position feedback. All digital interface signals are optically isolated to avoid problems associated with ground referenced control signals. The analog control command (+/-10 VDC) can be a differential input, which rejects normally encountered common mode noise.
An encoder interpolator option is available to accept analog sine/cosine position encoder signals, with 5, 10, or 25X multiplication.
Amplifier over-temperature faults, and motor over-power (I 2 t) faults are provided.
Specifications
| Parameter | Specification |
|---|---|
| DC Bus Voltage |
40 VDC |
| Continuous output current 1 |
2 A |
| Peak output current (1 second) |
5 A/10 A Optional (0 - peak) |
| Current loop bandwidth |
5 kHz |
| Encoder input frequency (max) | 2 MHz/4 MHz Optional |
| Motor commutation speed (max) 2 | Linear Motor - 2 m/s, Rotary Motor - 2700 RPM or 16,200 deg./s |
| Power requirements | 115 VAC ± 10% @ 3.0 A, 230 VAC ± 10% @ 1.5 A IEC-320 power inlet |
| Operating temperature range | 0-40 ºC |
| Size (mm) | 7.63 l x 5.31 w x 5.0 h (193.8 l x 134.9 w x 127 h) |
| Weight | 8.5 lbs, 3.86 kg |
Notes:
- With linear current drive, the maximum continuous stall current and maximum motor power is somewhat dependent upon the motor winding attributes. See Anorad Applications note in the Dual-Channel Linear Amplifier Installation and User Manual.
- Linear motor velocity based on 15 mm magnet pitch.
Block Diagram
