The A2T is a single axis, digital gravity angle sensor. The A2T serves as a full 360 range absolute tilt sensing programmable level with either digital or analog output. Internally, a rotary bar coded disk is mounted to a weighted gravity driven wheel. A micro-controller strobes an LED to transfer the bar code image onto an optical linear array which decodes the tilt angle. Magnetic damping provides fast response and settling time. An internal EEPROM stores field programmable parameters such as resolution, zero position, direction swap, and mode.
The A2T communicates over a RS485 style serial bus utilizing US Digital's SEI (Serial Encoder Interface) which allows for simple, quick and convenient networking of multiple SEI devices on a single network. PLCs, motion controllers and computers can also reside on the SEI bus as well by use of US Digital's SEI to USB interface device. For complete information about the SEI bus please refer to the SEI Communications Protocol webpage. Cable CAMD6A-SS-MD6 and the SEI-USB can be used to interface the A2T to a USB port.
Full 360 degrees range, 7 msec update time
Low power drain of 18.5 mA max., and 2.5 mA in sleep mode
Field programmable parameters such as setting zero position point (free demo software provided)
EEPROM stores downloadable parameters
9,600 baud default data rate adjustable up to 115K baud
12-bit analog voltage output option (0 to +3.599 volts factory default setting. Field progammable up to 0 to +4.095 volts)
12-bit accuracy and resolution field programmable from 2 to 4,096 codes per revolution (3,600 factory default)
Multi-turn mode (note: power must be maintained to prevent reset to zero)
-25 to 70 degrees C. operating temperature
Simple, low cost