Parker 590 series Product Manual page 143

Note: 1
SPEED LOOP
TAG# PARAMETER
14 PROP. GAIN
13 INT. TIME CONST
202 INT. DEFEAT
(SPEED SETPOINT
AFTER STOP RATES
SPEED
RAMP TO ZERO
DEMAND
D:1
207
62
47 SPEED FBK SELECT
ARM
VOLTS
ANALOG
TACH
+
ENCODER
49 ENCODER SIGN
FROM
CALIBRATION
590 Series DC Digital Converter
Functional Description
Speed Loop PI Output
The PI output is accessible via Tag No. 356. This point is before the I Limit clamps and the
summing of the additional current demand.
This Tag is not visible on the MMI.
Speed Loop PI with Current Demand Isolate
The speed loop output is still valid (active) with the I DMD. ISOLATE parameter enabled.
The speed loop is reset by unquenching the speed loop/current loop.
2 I DMD. ISOLATE is overridden by Program Stop (B8) or Normal Stop (C3).
3 The speed loop PI is holding the integral term as soon as the PI output reaches
current limit. This is true even in Current Demand Isolate mode where it may
interfere depending on the way the speed PI is used. This feature is currently not
suppressible.
105% Speed Demands
The speed demand clamping allows the speed setpoint to reach 105%. This applies only to the
final summing junction immediately before the speed loop and also to the Setpoint Sum 1
output. Individual speed setpoints are still clamped to 100%.
DEFAULT
SETTING
10.00
0.500 SECS
OFF
+
-
D:2 SPEED
FEEDBACK
ARM VOLTS
_
ENCODER/ANALOG
NOTE (1)
POSITIVE
Programming Your Application
ADVANCED NOTE (2)
ZERO SPD. QUENCH
ADAPTION
GAIN AND INTEGRAL
PROFILING
SPEED
ERROR
64
PI
297
D:3
NOTE (1)
DRIVE
ENABLE
ENCODER/ANALOG FEEDBACK SELECTION USED
ANALOG TACH FEEDBACK FOR THE PROPORTIONAL
TERM OF THE SPEED LOOP PI, AND ENCODER
FEEDBACK FOR THE INTEGRAL TERM. THIS FEEDBACK
SELECTION REQUIRES A COMBINATION ANALOG TACH/
ENCODER FITTED TO THE MOTOR.
+
THIS SELECTION CANNOT BE USED WHEN 590 SWITCHABLE
-
TACHO CARD IS FITTED.
NOTE (2)
SEE ADVANCED SUB MENU FOR ADDITIONAL
INFORMATION.
ZERO SPD OFFSET
FROM CALIBRATION
6-53
TO CURRENT LOOP
IDMD ISOLATE
SWITCH I/P
356