- Output power range up to 10 A peak
- DC input
- CE approved and NRTL safety certification; follows the 2011/65/EU RoHS 2 Directive
- PWM power stages
- Digital current, velocity, and position loops for improved motion stability
- Optional integrated encoder multiplier for higher throughput and reduced wiring
- Flexible design provides ability to drive brushless and DC brush-type servomotors as well as stepping motors
- Encoder feedback
The Ndrive® family of digital servo amplifiers are high performance discrete drives used with the Automation 3200 motion controller. These drives are capable of controlling brushless, DC brush, and stepper motors over a wide range of operating voltages and currents. Based on a common architecture, Ndrive amplifiers perform both current- and position-loop closures digitally.
The use of high-performance double-precision processors allows these drives to generate ultra-smooth motion profiles. Servo system response is optimized with the use of up to eight second-order loop-shaping filters, precise time-aligned feed-forward and other proprietary techniques with loop closure rates up to 20 kHz.
The Ndrive family is offered in a number of highly efficient PWM versions. The Ndrive MP is a low power, small footprint PWM drive ideal for space-sensitive applications. The Ndrive CP is a medium-power PWM drive capable of running directly from AC mains voltage and is optimized for cost-sensitive applications. The Ndrive HPe is the highest performance PWM drive providing a host of features not available on the other PWM drives, and is available in output current ranges from 10 A to 200 A peak.
Options for the Ndrive family include integral encoder interpolation, one- to three-axis position synchronized output (PSO), automatic brake control, digital and analog I/O expansion, absolute encoder interface, and one- or two-channel resolver interfaces. An optional dedicated ethernet port is available on the HPe drives for connection to third-party I/O expansion devices. This provides the potential to connect to a large number of I/O points typically required for PLC-type applications.
Any combination of Ndrive amplifiers may be connected to the Automation 3200 FireWire® network, allowing the system to be customized as needed.
Ndrive MP Specifications
|Motor Style||Brush, Brushless, Stepper(1)|
|Peak Output Current (1 sec)(4)||Apk||10|
|Continuous Output Current(4)||Apk||5|
|Analog Inputs||One 12-bit Differential; ±10 V|
|Dedicated Axis I/O on Feedback Connector||Three Limit Inputs (CW, CCW, Home); Three Hall Effect Inputs (A, B, C); Three HighSpeed differential Inputs (sin, cos, mkr for encoder); Motor Over-Temperature Input|
|Dedicated I/O on Auxiliary Feedback Connector||N/A|
|I/O Expansion Board(5)||8/8 Digital Opto-Isolated; 1 Analog In (±10 V, 12-bit Differential); 1 Analog Out (±5 V, 16-bit); sin, cos, mrk for Aux Enc; Aux Enc can be used for PSO Output|
|High Speed Data Capture||Yes (50 ns Latency)|
|Automatic Brake Control||Optional(6)|
|Emergency Stop Sense Input (ESTOP)(6)||Standard; 24 V Opto-Isolated|
|Position Synchronized Output (PSO)||Optional(5)|
|Can Output Multiplied Encoder||No|
|Can Output Square Wave Encoder||No|
|Primary Encoder Input Frequency||200 kHz Amplified Sine Wave Standard (for onboard multiplier); 40 MHz TTL Square Wave|
|Secondary Encoder Input Frequency||32 MHz Square Wave|
|Encoder Multiplication||Up to x4096 (MXU); no real-time quadrature output|
|Internal Shunt Resistor||N/A|
|Fieldbus||Modbus TCP on PC|
|Current Loop Update Rate||kHz||20|
|Servo Loop Update Rate||kHz||8|
|Power Amplifier Bandwidth||kHz||Selectable Through Software|
|Minimum Load Inductance||mH||0.1 @ 80 VDC|
|Operating Temperature||°C||0 to 50|
|Storage Temperature||°C||-30 to 85|
|Weight||kg (lb)||0.45 (1.0)|
|Standards||CE approved, NRTL safety certification, 2011/65/EU RoHS 2 Directive|
- For stepper motors only, one-half of bus voltage is applied across the motor (e.g., 80 VDC supply results in 40 VDC across stepper motor).
- "Keep Alive" supply.
- Output voltage dependent upon input voltage.
- Peak value of the sine wave; rms current for AC motors is 0.707 ∗ A pk.
- Requires I/O option.
- Requires external relay to remove motor supply power.