Parker BD-E Series, Руководство пользователя

Страница: 43 / 48

APPENDIX A. ENCODER SETUP 37
Commutation Encoder Pull up Voltage
The BD drive may be used with the following types of commutation encoders:
Open collector outputs (single ended or complementary)
TTL outputs (single ended or complementary)
Line driver outputs
The bit switch 3 selects the pull-up voltage for the commutation encoder inputs:
Function Switch 3
Inputs pulled up to +15V OFF
Inputs pulled up to +5V ON
Open collector outputs will require a setting of +15V, whilst line driver and TTL outputs should be
set to +5V. Please contact Digiplan if the open collector option is required.
Encoder Resolution
The BD drive can be used with incremental encoders having a resolution of 512 or 1024 lines per
revolution. After processing, the encoders would effectively produce 2048 and 4096 steps/rev
respectively.
Function Switch 4
512 lines per revolution ON
1024 lines per revolution OFF
Note: Digiplan 3.4 inch motors are fitted with a 1024 line encoder.
Velocity or Torque Amplifier
The BD drive would normally be used as a velocity amplifier, in which case the bit switch 5 is set
as follows:
Switch 5 OFF
To use the drive as a torque amplifier (so that input voltage now determines torque rather than
velocity), set the bit switch 5 as follows:
Switch 5 ON
When the drive is used as a torque amplifier, turn the Time Constant control fully CW, the
Damping control fully CCW and the Tach gain potentiometer fully CCW.