Table 10: By-pass valve reactions to main valve position
By-pass valveMain valve
Release
(available operation commands)
Enable signal
Bypass Sync OUT
Position
in directions OPEN or CLOSEHigh level (release)
(Standard: +24 V DC)
End position
CLOSED
In direction OPEN or CLOSE
1)
Low level (interlock)
(0 V DC or input open-circuit):
Other position
In case of an operation command in direction CLOSE, the "Interlock by-pass" signal is sent (no re-
lease).
1)
EMERGENCY behaviour
The EMERGENCY behaviour of the by-pass function has the same properties as
the <EMERGENCY behaviour> function with the following differences:
In an EMERGENCY situation, both actuator controls receive the EMERGENCY
signal at the same time.This signal starts the EMERGENCY operation specially
defined for the by-pass function. (Parameter EMCY operation M0204 is therefore
not available in the <EMERGENCY behaviour> function).
EMERGENCY operation procedure
1. By-pass valve is opened first.
2. Once the by-pass valve is fully opened, the main valve is closed.
3. Once the main valve is fully closed, the by-pass valve is fully opened.
Configuration of digital inputs
Required user level: Specialist (4) or higher.
Device configuration M0053
I/O interface M0139
Digital inputs M0116
Example
Use input DIN4 for signal Bypass Sync In:
Use input DIN6 for signal EMERGENCY:
Setting values:
●
Signal DIN 5 M0122 = By-pass Sync In
(wiring diagram designation: BYPASS SYNC IN)
●
Signal DIN 6 M0121 = EMERGENCY
(wiring diagram designation: NOT/EMERGENCY)
Information
The logic for the digital inputs may be inverted. Depending on the parameter setting
(e.g. Coding DIN 6 M0128), the input is either High active or Low active. Default
setting is High active.
Configuration of digital output
Required user level: Specialist (4) or higher.
Device configuration M0053
I/O interface M0139
Digital outputs M0110
Example
Use output DOUT6 for signal Bypass Sync Out:
Parameters: Signal DOUT 6 M0111
Setting value: Bypass Sync Out (wiring diagram designation: BYPASS SYNC
OUT)
8.11.1. By-pass function: activate
Required user level: Specialist (4) or higher.
Device configuration M0053
Application functions M0178
67
Actuator controls
AC 01.2/ACExC 01.2 Profinet Application functions
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