ABB ECA06 - Page 168

3.6 Setting the Configuration Chapter 3: Configuration
168 493-0736-11 (6-2)
The Pulse output is active for 30 seconds and then inactive for 20 (50–30)
seconds.
Figure 56 Two State Pulse Example.
Three State Pulse
The Three State Pulse output has two analog inputs, FeedbackSignal and Signal,
two digital outputs, Increase and Decrease. It also holds three analog parameters,
DeadBand, ActuatorPosTime, and ActuatorMinPulseLen.
As long as the input signal (which is the output from the control block) increases,
the Increase output is active. As long as the input signal decreases, the Decrease
output is active. When the input signal is stable within the deadband, neither
output is active.
To connect the output Increase and Decrease pulse signals to the system under
control, two of the Digital Outputs must be used.
The parameter ActuatorPosTime represents the time it takes for the actuator to
travel its entire span (from 0.0% to 100.0%, or vice versa). The parameter
ActuatorMinPulseLen (value in percent) represents a buffer threshold (a value in
percent) used for determining when to activate any output.
Time
False
True
–10 0 10 20 30 40 50 60
Available in
ECA06 ECA60 ECA600 EMA60
-XX-
Signal
Feedback Signal
Three
State
Pulse
Increase
Decrease