A-828: High Performance Motion Controller

The PI A-82× motion controller series provides a fully integrated electronics solution in a small 4-U-high 19-inch rack unit, including a controller, drives, and power supply.

Features

Quiet PWM drives, with optional NanoPWM high-performance drive module

Encoder inputs support sine/cosine and BiSS-C

10 A continuous current/20 A peak output current per axis

4, 6, or 8 high-performance motion axes

Fully integrated closed-loop servo control, amplifier module, and power supplies

For voice coil drives, DC motors, and brushless 3-phase motors

A-82x, dimensions in mm.

A-82x, dimensions in mm. Image Credit: PI (Physik Instrumente) LP

The A-82× controllers are created and enhanced with PIglide air-bearing stages with high-resolution encoders, direct drive linear, and rotation servo motors. Modern ACS SPiiPlusEC motion controller and EtherCAT master are included in the A-82× motion controller.

Absolute encoders that employ the BiSS-C data protocol and inputs for incremental sine and cosine are standard options.

A 16384× integrated interpolation factor is included for sine/cosine encoder support. All controllers have built-in flash memory that can store motion programs and settings.

The A-82× controllers can be operated independently using pre-stored programs or under external PC control. For programming and starting, a PC is needed. The controller comes with all software.

The servo tuning, controller starting, and error calibration will all be handled by PI if the controller is purchased along with a PIglide air-bearing stage or positioning system. This will result in a fully functional, ready-to-use positioning system.

The A-824.2N×00 models incorporate ACS’s NanoPWM technology. For difficult positioning applications, they provide the best feasible solution: subnanometer position holding, tracking errors that are only a few nanometers, and ideal velocity constancy.

A real substitute for linear drives is nanoPWM since it offers comparable performance at a lower cost and requires less system space overall.

Options and Upgrades

Absolute encoders or incremental encoders (which can be combined for all of the controller’s axes by customer specifications)

G-Code programming

Input shaping

Upgrade to ServoBoost^™. Better, more consistent servo performance that is insensitive to noise or system changes

Upgrade to ServoBoost^™ PLUS. Increases position stability and velocity constancy

EtherCAT provides additional control axes for external drives

Alternative customized packaging for OEM setups

Specifications

Source: PI (Physik Instrumente) LP

	A-824.21x00	A-824.2Nx00	A-826.21x00	A-828.21x00
Number of drive axes	4	4	6	8
Number of controller axes	8	8	16	16
Controller type	Closed-loop servo control (PID), parameter changing during operation	Closed-loop servo control (PID), parameter changing during operation	Closed-loop servo control (PID), parameter changing during operation	Closed-loop servo control (PID), parameter changing during operation
Servo-frequency position control	10kHz	10kHz	10kHz	10kHz
Servo frequency current control	20kHz	20kHz	20kHz	20kHz
EtherCAT cycle time, frequency profile generator	5kHz	5kHz	4kHz	4kHz
Trajectory profiles	Point-to-point, jog, s-curve, interpolated coordinated multi-axis profiles	Point-to-point, jog, s-curve, interpolated coordinated multi-axis profiles	Point-to-point, jog, s-curve, interpolated coordinated multi-axis profiles	Point-to-point, jog, s-curve, interpolated coordinated multi-axis profiles
Cooling	Fan on the side (continuous operation, constant speed)	Fan on the side (continuous operation, constant speed)	Fan on the side (continuous operation, constant speed)	Fan on the side (continuous operation, constant speed)
Drive type	PWM	NanoPWM	PWM	PWM
Motor types	Voice coil Brushed DC motor Brushless 3-phase motor with sine commutation	Voice coil Brushed DC motor Brushless 3-phase motor with sine commutation	Voice coil Brushed DC motor Brushless 3-phase motor with sine commutation	Voice coil Brushed DC motor Brushless 3-phase motor with sine commutation
Encoder options (factory default) (Can be configured individually for combinations according to customer specifications)	Incremental sine/cosine (1 V_pp) A/B quadrature (RS-422) (on request), Absolute encoder BiSS-C	Incremental sine/cosine (1 V_pp) A/B quadrature (RS-422) (on request), Absolute encoder BiSS-C	Incremental sine/cosine (1 V_pp) A/B quadrature (RS-422) (on request), Absolute encoder BiSS-C	Incremental sine/cosine (1 V_pp) A/B quadrature (RS-422) (on request), Absolute encoder BiSS-C
Interpolation factor sine/cosine encoder	4x to 16384x (can be adjusted by software)	4x to 65532x (can be adjusted by software)	4x to 16384x (can be adjusted by software)	4x to 16384x (can be adjusted by software)
Output voltage	72V DC	96V DC	72V DC	72V DC
Output current (per axis)	10 A continuous operation, 20 A peak (<1 s)	6.6 A continuous operation, 20 A peak (<1 s)	10 A continuous operation, 20 A peak (<1 s)	10 A continuous operation, 20 A peak (<1 s)
Output power (total)	1100 W continuous operation 2300 W peak	1500 W continuous operation 3000 W peak	1500 W continuous operation 3000 W peak	1500 W continuous operation 3000 W peak

Interfaces	A-82x.21x00	A-824.2Nx00
Communication	Ethernet: TCP/IP, 100/1000 Mbps Ethernet/IP	Ethernet: TCP/IP, 100/1000 Mbps Ethernet/IP
User I/O (without reference and limit switch)	4x digital input, 24 VDC, sink 3x digital output, 24 VDC, source 2x analog input, differential, 12-bit 2x analog output, differential, 10-bit 4x RS-422 high-speed output for position trigger (PEG)	4x digital input, 24 VDC, sink 4x digital output, 24 VDC, source 2x analog input, differential, 12-bit 2x analog output, differential, 10-bit 4x RS-422 high-speed output for position trigger (PEG)
Interlock / motion-stop	1x input, 24 V DC	2x input, 24 V DC
Connector interface	Rear panel connectors D-sub for motor and signal connections IEC 60320 type C20 for power supply (power cord with NEMA L6-20P plug in the scope of delivery)	Rear panel connectors D-sub for motor and signal connections IEC 60320 type C20 for power supply (power cord with NEMA L6-20P plug in the scope of delivery)

Miscellaneous	A-824.2x00	A-824.2Nx00	A-826.21x00	A-828.21x00
Power supply	200 - 240 V AC, single phase, 50-60 Hz	200 - 240 V AC, single phase, 50-60 Hz	200 - 240 V AC, single phase, 50-60 Hz	200 - 240 V AC, single phase, 50-60 Hz
Mass (approx.)	13.6 kg	15.7 kg	14.4 kg	15.2 kg

标签：Nanopositioning Systems

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