CKD EVD-1000 Series - Proportional Value Change; Unit Setting

SM-A20758-A/3 3. USAGE
34 2020-10-06
Proportional value change
In the F5 screen, whether the proportional value
change is enabled or disabled and its set level can be
confirmed.
• When disabled: Controls with standard values
(factory setting).
• When enabled: "Higher proportional value" or
"Lower proportional value" can be selected.
The set value can be selected from 10 levels only
when "Lower proportional value" is selected.
◼ Effect of increasing the proportional value
A higher accuracy control can be achieved depending
on the piping and load capacity conditions.
Note that hunting will occur easily.
◼ Effect of decreasing the proportional value
More stable control can be achieved depending on the piping and load capacity conditions. It is effective
especially if control pressure fluctuates significantly or hunting occurs.
When the function is disabled:
When "Higher proportional value" is selected (H):
When "Lower proportional value" is selected (L):
Unit setting
The F6 screen shows whether the unit is its set value.
When the Unit setting none:
When the Unit setting available:
Time (msec)
Note: The figure above is reference. The actual values will change
depending on the piping and load conditions.
When the function is disabled (standard
value)* factory setting
When "Lower proportional value" is
selected (10 levels: L1 to L10)
Control pressure
Proportional value change function
Unit