- Output power range 10 A peak to 30 A peak at 320 VDC
- Single-phase AC line 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 or resolver feedback
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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 CP Specifications
|Motor Style||Brush, Brushless, Stepper(1)|
|Motor Supply||VAC||Single-Phase 7-240 VAC; 50/60 Hz|
|Control Supply(2)||VAC||85-240 VAC; 50/60 Hz|
|Peak Output Current (1 sec)(4)||Apk||10||20||30|
|Continuous Output Current(4)||Apk||5||10||10|
|Digital Inputs||6 Optically Isolated (2 High Speed)|
|Digital Outputs||4 Optically Isolated|
|Analog Inputs||One 16-bit Differential; ±10 V|
|Analog Outputs||One 16-bit Single-Ended; ±10 V|
|Dedicated Axis I/O on Feedback Connector||Three Limit Inputs (CW, CCW, Home); Three Hall Effect Inputs (A, B, C); Three High-Speed differential Inputs (sin, cos, mkr for encoder); Motor Over-Temperature Input|
|Dedicated I/O on Auxiliary Feedback Connector||sin, cos, mkr for Aux Enc; Aux Enc can be used for PSO Output|
|I/O Expansion Board(5)||16/16 Digital Opto-Isolated; 1 Analog In (±10 V, 12-bit Differential); 1 Analog Out (±10 V, 16-bit)|
|High Speed Data Capture||Yes (50 ns Latency)|
|Automatic Brake Control||Standard; 24 V at 1 A|
|Emergency Stop Sense Input (ESTOP)(6)||Standard; 24 V Opto-Isolated|
|Position Synchronized Output (PSO)||Single Axis Only|
|Can Output Multiplied Encoder||No|
|Can Output Square Wave Encoder||Yes|
|Primary Encoder Input Frequency||200 kHz Amplified Sine Wave Standard (for onboard multiplier); 40 MHz TTL Square Wave|
|Secondary Encoder Input Frequency||40 MHz Square Wave|
|Encoder Multiplication||Up to x4096 (MXU); no real-time quadrature output|
|Absolute Encoder||Renishaw Resolute BiSS; EnDat 2.1; EnDat 2.2|
|Internal Shunt Resistor||40 W Continuous; 400 W Peak (5 seconds)|
|Fieldbus||Modbus 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 @ 160 VDC (1.0 mH @ 320 VDC)|
|Operating Temperature||°C||0 to 50|
|Storage Temperature||°C||-30 to 85|
|Weight||kg (lb)||1.64 (3.6)|
|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.