ER5000 —
193
The ERTune™ Program: Power User
The Pulse Mode Panel
The elds in this panel give you precise control over how the
ER5000 responds to errors which fall within the deadband set
by the Integral Limits - Deadband controller. Refer to The Tuning
Tab: Controls and Functions for Tuning the ER5000 for more
information on the PID controllers.
NOTENOTE
CAUTIONCAUTION
WARNINGWARNING
The Integral Deadband must be set to a value greater than zero
for Pulse Mode to function.
The purpose of Integral Deadband is to prevent small, transient
errors from “charging up” the Integral term and inducing windup
or oscillations during steady state.
Pulse mode responds to errors within the Integral Deadband
range with short, pulsed, activation of the solenoid valves.
These pulsed responses continue until feedback falls within the
Pulse Mode Deadband range (in effect, the deadband within the
deadband). When feedback falls within this inner deadband, the
solenoid valves remain closed.
To enable Pulse Mode
1. Click the Enable radio button.
To disable Pulse Mode
1. Click the Disable radio button.
There are three parameters you can set for Pulse Mode.
Period
This is the number of times the ER5000 cycles through the
Algorithm Update before pulsing. The default Algorithm Update
rate is 25 ms.
Width
This eld determines how long the solenoid valve remains open
during a pulse. Increasing the value increases the level of response
for each pulse.
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