Pvst Activation - AUMA AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2 Profinet
Example
Information
Information
9.9.1.

PVST activation

If the actuator is in safe state (caused by the failure behaviour), the test will not
be performed.
The test can only be performed during OPEN - CLOSE control. For setpoint
control (modulating duty), a test cannot be performed.
Execute PVST via fieldbus command
For control via fieldbus interface, the tests are initiated via the PVST command.
Switching behaviour:
PVST = 0 (low active) = no test
PVST = 1 = test is initiated
If the test is not to be transmitted via a fieldbus command but using a binary signal,
(e.g. +24 V DC) via <Additional inputs> or via an additional <Parallel interface>, a
digital input has to be available and configured.
Configuration of digital input
Required user level: Specialist (4).
Device configuration M0053
I/O interface M0139
Digital inputs M0116
Use input DIN 5 for Execute PVST signal:
Parameters: Signal DIN 4 M0118
Setting value: Execute PVST (wiring diagram designation:
The logic for the digital inputs may be inverted. Depending on the parameter setting
(e.g. Coding DIN 4 M0126), the input is either High active or Low active. For safety
reasons, the Execute PVST signal input is generally set to Low active.
Execute PVST via digital input
Switching behaviour for coding Low active:
Input Execute PVST = low level (0 V DC or input open):
No test
Input Execute PVST = high level (standard: +24 V DC):
Test is initiated
Execute PVST manually via push buttons of the local controls
Required user level: Specialist (4) or higher.
Device configuration M0053
Service functions M0222
Execute PVST M0850
The actuator must be in the initial position.The initial position depends on the following
parameter settings: PVST behaviour M0853, PVST stroke M0854
Der PVST kann durch Senden eines Reset-Befehls abgebrochen werden:
local (manual), in selector switch position local operation, via push button
Reset.
From Remote, in selector switch position Remote control via a digital input.
Assignment: RESET
or via fieldbus reset byte 1 bit 3 of output data (for this, the selector switch must
be set to Remote control).
Required user level: Specialist (4) or higher.
Device configuration M0053
Application functions M0178
Failure functions
ESD )
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