Holding The Actual Value; Figure 16 Substitute Value Strategy When Holding The Present Actual Value ("Freeze") - WAGO 750 Product Manual

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4.2.9.1 Holding the Actual Value

If the local bus has a fault, the last valid value is held.
When the fault on the local bus is cleared, the value continues to be held until this state
has been acknowledged; see
knowledgement
The parameters for configuration are described in
(Process Data Handling, Valve 1, Valve 2)
No.
1
2
3
4
5
6
Product manual | Version: 1.1.0
Proportional Valve Module 2-3-4
8 Exiting the Substitute Value Strategy through Ac-
[} 29].
Figure 16: Substitute Value Strategy When Holding the Present Actual Value ("Freeze")
Event
Set SPL_EN to "1"
Increase setpoint.
Local bus error occurs.
Local bus error is eliminated.
Increase setpoint.
Change SPL_EN setting from
"0" to "1"
8 Parameter Tables 150 and 151
[} 34].
Description/Behavior
Normal operation is activated.
Current is increased.
Parameterized setpoint is approached.
The present current is then maintained.
Present current is held.
Present current is held.
The present current is held because the substitute value strategy
has not yet been acknowledged.
Current is increased.
Parameterized setpoint is approached.
Therefore, the state of the substitute value strategy has been ex-
ited.
Functions
27