ITT HYDROVAR Series - Page 86

85
Example for using the Offset function:
SENSOR RANGE: 20mA ≙ 10 bar
REQUIRED VALUE: 5 bar
LEVEL 1: 30% of the Offset signal
LEVEL 2: 80% of the Offset signal
INTENSITY 1: -100% ≙ -10bar (refer to the sensor range) = -5bar
INTENSITY 2: +20% ≙ +2 bar (refer to the sensor range) = 7 bar
At parameter LEVEL 1 [0910] you have entered the start value (in percent from the
Offset Signal input (30%)), where the OFFSET starts to be active.
Also proceed with the second level (80%).
Intensity one and two are depending on the Sensor range of the actual value signal.
The Intensity 1 that you have entered is valid till you reach Level 1, after reaching Level 1
the Required Value has no offset.
The standard Required Value will be valid till you reach the Level 2. After reaching level 2,
the new value, depending on the Intensity 2, is valid.
0%
20%
40%
60%
80%
100%
0% 20% 40% 60% 80% 100%
5 bar
7 bar
+
-
0 bar
0% = 4mA (0V/2V) 100% = 20mA (10V)
Level 1
30%
Intensity 2
+20%
Intensity 1
-100%
Actual Value
in
p
ut
Required
Value 1
Offset si
g
nal
Level 2
80%