Level 5 - Valve Setup - ABB C505 User Manual

8
...3 SET UP MODE
3.5 Level 5 – Valve Setup
Note. Level 5 is applicable only for a motorized valve output type – see Section 4.2, Basic Configuration/
Output Type.
PV
PID
Control
Terms
SPt
3.5.1 Valve Setup (Feedback Types)
5. 0 0
LEV. 5
U. L U. E
5. . 0 1
VrAt
0
5. 0 2
VbIA
0
5. 0 3
d. b nd
1. . 0
5. 0 4
r. t rU.
30
LEV. 5
VLVE
44
PID
Output
(PID O/P x V. r At
+
V. b IA
Fig. 3.3 Motorized Valve Output with Feedback – Schematic
Level 5 – Valve Setup
Note. To select this frame from anywhere in this page, press and
hold the
Motorized Valve Ratio and Bias
Desired valve position = (Ratio x PID output) + Bias
Motorized Valve Ratio
[0.01 to 10.00]
Motorized Valve Bias
[–100.0 to 100.0%]
Motorized Valve Deadband
[0.0 to 100% of the position feedback span]
Position %
Example. If the valve is set to be driven to the 50% open position and the
deadband is set to 4%, the motor stops driving when the position feedback
is 48%. The deadband is between 48% and 52%.
Regulator Travel Time
The time entered is compared with the actual travel time. If the valve is
sticking an error message is generated.
[0 to 5000 seconds, 0 = no check]
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Valve
Open relay
)
Controller
Close relay
Position Feedback
key for a few seconds.
Required valve position
5.00...5.04
Process
Deadband
(centered around
required position)