Bypass Function: Activate - AUMA AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2
EMERGENCY behaviour
Example
Information
Example
8.7.1.

Bypass function: activate

Table 8: By-pass valve reactions to main valve position
Main valve
Position
End position CLOSED
Other position than end posi-
tion CLOSED
1) In case of an operation command in direction CLOSE, the "Interlock by-pass" signal is sent (no re-
lease).
The emergency behaviour of the by-pass function has the same characteristics as
the <EMERGENCY behaviour> function with the following differences:
In an EMERGENCY situation, both 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
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:
Signal DIN 6 M0121 = EMERGENCY
(wiring diagram designation:
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
Use output DOUT6 for signal Bypass Sync Out:
Parameter: Signal DOUT 6 M0111
Setting value: Bypass Sync Out (wiring diagram designation:
)
OUT
Required user level: Specialist (4) or higher.
Sends enable signal
Bypass Sync OUT
High level
(Standard: +24 V DC)
Low level
(0 V DC or input open-circuit):
BYPASS SYNC IN
NOT/EMERGENCY
Application functions
By-pass valve
Release
(available operation com-
mands)
in directions OPEN or CLOSE
1)
in direction OPEN only
)
)
BYPASS SYNC
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