COVER STORY
Figure 3: Intelligent motion solutions from Analog Devices
minimal size for encoder applications. AD7380 is in a small package size (3mm × 3mm) for miniaturisation of the encoder with 4 MSPS throughput for minimal latency and fast control loop transient response. The AD7380 oversampling engine allows higher accuracy for slower operating conditions.
Machine health Vibration and shock sensors are being integrated into the encoder or the motor to provide asset health insights. The ADXL1002 ultra-low noise (25μg/√Hz in ±50g range), high frequency, ±50g MEMS accelerometer provides high data bandwidth vibration sensing up to 11kHz (3dB point) with a resonant frequency of 21kHz. ADXL1002 provides a lower cost and lower power alternative to piezoelectric sensors. ADXL1002 enables monitoring of slow rotating equipment down to DC while also reducing calibration requirements when compared to piezo sensors. ADXL354 is a low-noise, low-power 3-axis MEMS accelerometer in a small (3mm × 5mm) package with a digital interface, SPI (3- and 4-wire), and I2
C to provide a compact solution for vibration sensing integration in encoders. The ADI OtoSense Smart Motor Sensor
is an AI-based, full turnkey hardware and software solution for condition monitoring of electric motors, combining
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best-in-class sensing technologies with leading-edge data analysis. Agnostic of motor type, ADI OtoSense SMS covers the most critical diagnostics, translating data into actionable insight that enables you to forecast maintenance cycles and avoid unplanned downtime.
Network interface
Smart manufacturing is based on a network of intelligent motion applications sharing data between the assets and the higher-level control and management network. ADI’s robust, low-power and low-latency PHYs include the ADIN1200 (10/100) PHY and the ADIN1300 (10/100/1000) PHY. Both were developed for industrial applications that require operating ambient temperature to 105°C and have been extensively tested to EMC and robustness standards to operate in harsh industrial applications.
Low-latency PHYs enable a lower cycle time network that can support more devices connected to the network and meet the timing requirements for complex, high-performance deterministic motion applications.
For deterministic Industrial Ethernet connectivity, ADI’s Layer-2 Industrial Ethernet embedded 2-port switches fi do5100 and fi do5200 support PROFINET, Ethernet/IP, EtherCAT, Modbus TCP and Ethernet POWERLINK Industrial Ethernet
protocols with any processor, protocol or stack.
Motion controller The motion controller provides the processing engine to generate the PWM signals to drive the power semiconductors, and receives the current and position feedback signals to control the motors’ speed and torque. Robust, high-ambient, high power density power management solutions are required to power the controller, which is often an FPGA or a processor. Analog Devices’s Power by Linear power management ICs and power modules provide the foundation for powering intelligent motion applications. The motion controller is often located in a central rack that needs to communicate over a large distance to the encoder. This is where ADI’s isolated and non-isolated RS-485 transceivers are used for serial communication between encoder and motion controller. The ADM3066E, a ±12kV IEC ESD-protected, full-duplex 50Mbps RS-485 transceiver provides a high-bandwidth, high-ambient temp (125°C), robust communications solution in a small size for encoder applications.
CONTACT:
Analog Devices Inc.
www.analog.com
Automation | February 2022 11
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