The A-811.CE single-axis motion controller from PI is an integrated electronics solution with a controller and servo drive in a compact desktop enclosure. The controller is intended for use with the PIglide air-bearing linear and rotation stages and other PI stages equipped with servomotors and high-resolution encoders.
- Compact benchtop device, external AC/DC power supply
- Complete-integrated servo-controller with drive
- Encoder inputs support incremental (analog sine/cosine) and absolute (BiSS-C, EnDat 2.2) encoders
- For voice coil drives, DC motors, and brushless 3-phase motors; quiet PWM drives
- Output current up to 10 A continuous/20 A peak
- Functional safety: STO (Safe Torque Off)
A-811.CED0x, dimensions in mm. Note that a comma is used in the drawings instead of a decimal point. Image Credit: PI (Physik Instrumente) LP
The typical controller has inputs for both incremental and absolute encoders. The integrated interpolation factor for sine/cosine encoders is up to 65536× (16 bit). The controllers encompass an onboard flash memory for stored motion programs and parameters.
The A-811.CE controller can be operated in a stand-alone mode using stored programs or from an external PC. Programming and initialization require a PC. The entire software package is included in the scope of delivery.
If the controller is purchased with a PIglide air-bearing stage or positioning system, PI will perform servo tuning, startup of the controller, and error calibration, resulting in a full ready-to-use positioning system.
The A-811.CE incorporates the cutting-edge ACS ECMsa Motion Controller with an incorporated servo drive.
Options
- Numerous motor current output levels
Specifications
Source: PI (Physik Instrumente) LP
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A-811.CED0x |
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Function
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ACS ECMsa controller and servo drive, option of closed-loop servo-control, parameter change in operation.
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Version
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Benchtop housing
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Motor types
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Brushless DC motors, brushed DC motors, voice coil motors
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Number of drive axes
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1
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| Motion and control |
A-811.CED0x |
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Controller type
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Cascading PIVFF controller structure with loop-shaping filters, advanced feedforward, good disturbance repression, gain scheduling, field-oriented servo control, and space vector modulation
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Sampling rate current control
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20 kHz
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Type of servo drive
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PWM
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Encoder
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Supported types:
Incremental: Analog 1 Vpp sine/cosine with index, differential, 4 x up to 65536x (16 Bit) interpolation, can be adjusted via software
Absolute: BiSS-C, EnDat 2.2
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Max. velocity encoder impulses
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Incremental: 500 kHz
Absolute: BiSS-C: 10 MHz, EnDat: 16 MHz
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Limit switches
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Incremental: 24 V DC, source or sink (preset on delivery); positive and negative limit switches; single-ended, opto-isolated
Absolute: n/a
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Functional safety
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STO (Safe Torque Off) input
SS1 (Safe Stop 1)
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| Interfaces and operation |
A-811.CED0x |
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Digital I/O lines
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2 × input, 24 V DC sinking (1 × usable as a MARK position lock)
2 × output, 24 V DC sourcing or sinking (1 x usable as motor brake output)
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Analog I/O lines
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2 × input, differential, 16 bit
2 × output, differential, 10 bit
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Output for position event generator (PEG)
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1 × RS-422 differential, 5 V high-speed output for position trigger
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Motor brake output
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1 × 24 V DC, 1 A max. sourcing (connected with 2nd DOUT)
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Communication interfaces
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Ethernet: TCP/IP (100/1000 Mbps), EtherNet/IP
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User software
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ACS SPiiPlus MMI Application Studio (included in the scope of delivery)
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Command set
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ACS SPiiPlus ACSPL+ command set (included in the scope of delivery)
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Application programming interfaces
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Programming libraries for C/C++, COM, .NET (included in the scope of delivery)
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Control rate and EtherCAT clock rate
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2 kHz
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| Electrical properties |
A-811.CED0x |
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Output voltage
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24 to 48 V, depending on the input voltage
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Motor output current
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A-811.CED02: 2.5 A continuous operation, 5 A peak
A-811.CED05: 5 A continuous operation, 10 A peak
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| Miscellaneous |
A-811.CED0x |
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Cooling
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Fan on the side (continuous operation, constant speed)
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Connectors
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D-sub for motor and signal connections
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Input voltage
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24 to 48 V DC
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Input current
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A-811.CED02: 2 A continuous operation, 4 A peak for 2.5/5 A output current
A-811.CED05: 4 A continuous operation, 8 A peak for 5/10 A output current
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Operating temperature range
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5 °C to 40 °C
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Mass
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1.7 kg
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Dimensions
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180 mm × 270 mm × 74 mm (W × L × H)
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