Eurotherm Drives 590 DRV Digital, Product Manual, Page: 309 / 318

590 DRV Digital DC Drive Product Manual
App. M - 29
Appendix M Special Blocks and Application Notes
M
Raise/Lower (Motor Operated Potentiometer Function)
The Raise/Lower function uses digital inputs to increase and decrease Draw, Ratio, or Tension. This permits gauge
controls or other automatic systems with logic outputs to connect directly with the drive.
Installation
These parameters are located in the SYSTEM::CONFIGURE I/O menu.
Block Diagram Parameters
Parameter Name Tag Description
RAMP O/P DEST = 309 SETPOINT SUM 1:: INPUT 0
SPT SUM 1 DEST = 289 SPEED LOOP:: SETPOINTS:: SETPOINT 1
PID O/P DEST = 423 SETPOINT SUM 1:: INPUT 2
SETPOINT SUM 2 = 432 TORQUE CALC.:: TORQUE DEMAND
POS. I CLAMP = 301 CURRENT LOOP:: POS. I CLAMP
NEG. I CLAMP = 48 CURRENT LOOP:: NEG. I CLAMP
Internal Links
LINK 1:: SOURCE TAG = 8 SETPOINT SUM 1::SIGN 1
DESTINATION TAG = 292 SETPOINT SUM 1::SIGN 0
LINK 2:: SOURCE TAG = 62 Speed Feedback Unfiltered
DESTINATION TAG = 443 SETPOINT SUM 2:: INPUT 1
LINK 3:: SOURCE TAG = 69 Jog Input
DESTINATION TAG = 433 TORQUE CALC.::TENSION ENABLE
LINK 4:: SOURCE TAG = 85 RAMPS::RAMP OUTPUT
DESTINATION TAG = 100 SETPOINT SUM 1:: INPUT 1
LINK 5:: SOURCE TAG = 434 TORQUE CALC.::OVER WIND
DESTINATION TAG = 8 SETPOINT SUM 1::SIGN 1
LINK 6:: SOURCE TAG = 444 SETPOINT SUM 2:: INPUT 0
DESTINATION TAG = 410 PID:: INPUT 1 (for loadcell tension control only)
Terminal I/O
ANIN 1:: DESTINATION TAG = 6 SETPOINT SUM 1:: RATIO 1
ANIN 3:: DESTINATION TAG = 5 RAMPS::RAMP INPUT
ANIN 4:: DESTINATION TAG = 444 SETPOINT SUM 2:: INPUT 0
ANIN 5:: DESTINATION TAG = 411 PID:: INPUT 2
DIGIN 1::DESTINATION TAG = 434 TORQUE CALC.:: OVER WIND
DIGIN 2::DESTINATION TAG = 408 PID:: ENABLE
Other Parameters
CURRENT LOOP::BIPOLAR CLAMPS = ENABLED.
CURRENT LOOP::CUR. LIMIT/SCALER = 200%.
SPEED LOOP::SETPOINTS::RATIO 2 (A3) = 0.0000.