Yaskawa Motion Control G7 Drive Software - Manual (Page 35)

Date: 05/16/08, Rev: 08-05 Page 35 of 38 TM.G7SW.117
Appendix A: Absolute Encoder Considerations
• Up to 18 bits of gray code information can be interfaced to the drive.
• Available ONLY for “Linear Absolute” (P1-01 = 1) applications.
• Cannot be used with any “option board required” communications, like Profibus, DeviceNet, Modbus
Plus, or Ethernet, as these option boards utilize the 2CN port which is needed for the DI-16H2 board.
• Requires a DI-16H2 option card installed at 2CN on the drive.
• In addition to the gray code encoder, requires a separate motor-mounted incremental encoder AND a
PG-X2 option card installed at 4CN on the drive.
• Logic Levels: +24 VDC (true) and 0 VDC (false).
• Gray code encoder MUST be capable of “sinking” current on its outputs.
• Mountable directly on machine or on motor (gear ratio available).
• Rollover protection.
• Tested with a Dynapar ai2512122B121 multi-turn gray code encoder. This encoder has 12 bits of
resolution per revolution and 12 bits of revolutions.
• External power supply required to power absolute encoder.
6.0 Appendices