Operation Mode Emergency; Operation Mode Emergency Stop; Operation Mode Disabled; Operation Mode Service - AUMA AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2
6.4.

Operation mode EMERGENCY

Characteristics
6.5.

Operation mode EMERGENCY stop

Condition
Characteristics
6.6.

Operation mode Disabled

Characteristics
6.7.

Operation mode Service

Conditions:
Characteristics
Direct reversal of operation is also possible without the STOP command. However,
operation can be stopped at any time by the STOP command.
See also: Failure function <EMERGENCY behaviour>
The indication in the top row of the display shows: EMERGENCY
The operation mode EMERGENCY is initiated by the EMERGENCY signal.
The actuator performs an EMERGENCY operation. For example, the actuator
moves to a predefined EMERGENCY position (i.e. end position OPEN or end
position CLOSED).
As long as the EMERGENCY signal is present, the actuator does not respond
to any other operation commands (EMERGENCY signal has top priority).
The actuator can start immediately when switching on!
Risk of personal injuries or damage to the valve.
Ensure that the EMERGENCY signal is present when switching on.
Should the actuator start unexpectedly: Immediately set selector switch to pos-
ition 0 (OFF).
Option
See also: Failure function <EMERGENCY stop function>
An EMERGENCY stop button (latching) is either located on the electrical connection
or outside.
The indication in the top row of the display shows: EMCY stop
In an emergency, the EMERGENCY stop button can be used to interrupt the
power supply of the motor control (contactors or thyristors).
Operation mode EMERGENCY stop supersedes all other operation modes.
A new operation command can only be executed once the pressed EMER-
GENCY stop button is released and operation mode EMERGENCY Stop is
cancelled using a Reset command.
Analogue operation commands (e.g. 0/4 – 20 mA) are immediately executed
again.
See also: Application function <Local controls:enable>
The indication in the top row of the display shows: Disabled
The operation via the push buttons on the local controls is disabled.
Operation mode Disabled is possible in selector switch positions LOCAL and
OFF.
Table 6: Functions depending on the selector switch position:
Selector switch is in position
Local control (LOCAL)
0 (OFF)
The Enable Local is used for disabling or enabling via a digital input.
Set selector switch = position Local control (LOCAL) or Remote control (REMOTE).
Display indicates in the first row: Service
The indication in the top row of the display shows: Service
Function during indication = Disabled
Actuator cannot be operated locally
Local menu operation not possible
Operation
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