PID (Proportional-Integral-Derivative):
The
"PID"
regulation maintains the valve at a configured set-point. Up to four (4)
"PID"
regulation loops can be
programmed, each of them offering local or remote set-point capability. Real-time chart view helps to visualize valve
response and
fi
ne tune the Electronic Valve Controller accordingly. Perfect valve control is achieved by CLA-VAL
features such as programmable set-point ramping to prevent hydraulic shocks.
Control Curve:
The
"Control Curve"
offers an easy way to create a relationship between 2 system variables. Using graphical functions
the user draws the
"Control Curve"
relationship linking pressure,
fl
ow, level and/or time directly on the Electronic Valve
Controller screen. Up to four (4)
"Control Curves"
can be pro
fi
led allowing speci
fi
c adaptation such as seasonal
adjustment.
!ACTION!:
Used to take action (or alarms) when a programmable condition is met by forcing an output (relay, solenoid,
4-20 mA). The closing relay can be used to send an alarm to a supervision system. Up to four (4)
"!Actions! "
can be
programmed including appropriate hysteresis or dead band configuration.
Power Management:
This is used to manage the unit Power and prevent excessive battery discharge. It can be used on flow or differential
pressure.
The power management allows activating default values, according to user pre-programmed rules.
Valve configuration -
"PID Menu"
A) General Tab
Input Field Description:
"PID Description":
Use this field to choose a unique name for each PID loop
"PID Type":
Designate what type of control is being used
o
"Flow":
Control using flow SetPoint and Feedback
o
"Pressure ":
Control using pressure SetPoint and Feedback
3.3.5.4
Visit www.cla-valpacific.com for more details. Contact the Factory at [email protected]
14
CLA-VAL VC12
Electronic Controller
