Nservo Servo Controller

Description

Design Features

  • Use to retrofit your existing system with new controls; extend the life of your capital investment
  • Supports 2 (standard) or 4 closed-loop servo axes
  • Each axis has three-phase ±10 volt outputs to drive any amplifier
  • FireWire enabled servo controller for simplified wiring
  • Software configurable for brush, brushless and stepper motor operation
  • Optional Ethernet port to connect additional I/O
  • Encoder or resolver feedback accepted
  • Connector options include terminal block, D connector and legacy OP500 connector support block for Aerotech retrofits; reduces wiring and changeover time

Nservo is a digital 2- or 4-axis (position and velocity) servo controller, with up to 20 kHz sample time. It is compatible with encoders or resolvers and provides a ±10 VDC three-phase command to any amplifier. With 11 digital inputs, 8 digital outputs, 4 analog inputs, 2 analog outputs (in addition to the 8 analog outputs that drive the amplifier), and expandable I/O, Nservo will accommodate most system I/O requirements. As with the Ndrive series, only a single 4-wire cable is needed to communicate with the motion generator on the PC. Other features include limits, E-Stop, brake, auxiliary feedback input, high-speed latching inputs, and Ethernet.

Aerotech's Nservo complements the Automation 3200 system’s network digital drives (Ndrive, NLdrive, NCdrive and Npaq), allowing an industry standard analog transconductance amplifier (voltage command, current output) to interface to Aerotech's digital drive network. Connected via the IEEE-1394 (FireWire®) communication bus, which provides deterministic behavior, autoidentification, and easy software setup from the NMotion SMC software controller.

The standard Nservo (Nservo-DB) may be used to upgrade an existing Aerotech system with analog servo amplifiers, such as Aerotech’s BA amplifier series, to the Automation 3200. Aerotech’s DR300/DR500/DR600/DR800 drive racks may also be upgraded via the Nservo with the -OP option. The Nservo with -TB option may be used to interface third party, non-Aerotech servo amplifiers to the A3200 platform.

Feature Summary

  • Supports 2 (standard) or 4 closed-loop servo (position and velocity) axes.
  • Each axis has three-phase ±10 volt outputs. Two outputs are driven directly by DAC's and the third output will be a summation of the first two outputs to provide third phase generation for commutated motors.
  • Up to 5 channels of 32 MHz line driver quadrature encoder inputs.
  • 24-volt tolerant opto-isolated CW, CCW, home and drive fault inputs per axis powered by either an internal 5V or external power supply.
  • 24-volt tolerant drive enable output per axis (open collector transistor, single ended, polarity selectable).
  • 11 digital inputs (8 optically isolated).
  • 8 opto-isolated digital outputs (sinking and sourcing; 5-24V).
  • Four 16-bit analog inputs; 2 are differential with x1, x2.5, x4, x10 input gains.
  • Two 16-bit analog outputs.
  • Opto-isolated PSO output (opto-coupled, open collector, differential).
  • All I/O connections via easily removable connectors.
  • Two FireWire® ports.
  • Dedicated Emergency Stop sense input standard.
  • Internal power supply.
  • Equivalent software functionality (less current loop support) to the NDrive, NPaq, etc.
  • Software configurable for brush, brushless, and stepper motor operation.
  • 5 VDC, 500 mA user output power for encoder, limits, etc.
  • Fail safe brake control output (open collector).
  • Four auxiliary (U500/U600 compatible) open collector mode outputs.
  • High-Speed position latching input.
  • 48 bits of programmable I/O, user definable as input/output by byte.
  • Expansion connector for a four-axis R/D feedback module.
  • Optional Ethernet port
  • Legacy OP500 connector support (4 axis standard) for DR500 interface, etc

Specifications

  • Nservo-DB2 (Standard)/-DB4 Hardware
    Nservo-DB2 (Standard)/-DB4 Hardware
  • Nservo-OP Hardware
    Nservo-OP Hardware
  • Nservo-TB2/-TB4 Hardware
    Nservo-TB2/-TB4 Hardware

Dimensions

  • Nservo DB2 DB4
  • Nservo OP
  • Nservo TB2 TB4

Ordering Information

Nservo Ordering Information

OptionsDescription
NSERVO-DB2 2-axis drive interface board with 25-pin D-style encoder/drive connectors for analog amplifiers. Includes single or dual-phase current command, 8 digital inputs, and 8 digital outputs
NSERVO-DB4 4-axis drive interface board with 25-pin D-style encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, and 8 digital outputs
NSERVO-TB2 2-axis drive interface board with screw terminal encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, and 8 digital outputs
NSERVO-TB4 4-axis drive interface board with screw terminal encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, and 8 digital outputs
NSERVO-OP Legacy interface to Aerotech products DR300, DR500, BB500, BB501, U600, U500, et al
NSERVO-ENET-DB2 2-axis drive interface board with 25-pin D-style encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, 8 digital outputs, and Ethernet
NSERVO-ENET-DB4 4-axis drive interface board with 25-pin D-style encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, 8 digital outputs, and Ethernet
NSERVO-ENET-TB2 2-axis drive interface board with screw terminal encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, 8 digital outputs, and Ethernet
NSERVO-ENET-TB4 4-axis drive interface board with screw terminal encoder/drive connectors for analog amplifiers, piezo drives, or galvos. Includes single or dual-phase current command, 8 digital inputs, 8 digital outputs, and Ethernet
NSERVO-ENET-OP Legacy interface to Aerotech products DR300, DR500, BB500, BB501, U600, U500, et al with Ethernet option

PSO Options

OptionsDescription
-DPSO Dual Axis PSO
-TPSO Triple Axis PSO
-OPTO2 Opto isolator for PSO, requires DPSO/TPSO option (<+15v, high speed, low current, 6N136)
-OPTO3 Opto isolator for PSO, requires DPSO/TPSO option (<+30V, low speed, low current, 4N33)
-OPTO4 Opto isolator for PSO, requires DPSO/TPSO option (TIL117-M, 40 KHz, 5-25VDC, 50 ma)

Resolver/Inductosyn Options

OptionsDescription
-RDP2-10K Nservo 2 channel RDP-10K
-RDP2-7.5K Nservo 2 channel RDP-7.5K
-RDP2-5K Nservo 2 channel RDP-5K
-RDP4-10K Nservo 4 channel RDP-10K
-RDP4-7.5K Nservo 4 channel RDP-7.5K
-RDP4-5K Nservo 4 channel RDP-5K

Upgrade Options

OptionsDescription
-UPGRADE Upgrade from U500/U600 system

Misc Options

OptionsDescription
-LMT5V Uses internal 5V supply to power limits and remove opto isolation
-SE Single ended Analog Input