Bernard Controls SQX Series User Manual

21
- auto/on off: actuators used to control equipment with the
positioner function can be a DC signal driven (e.g. 4-20 mA) or
via open/close/stop commands. The auto/ on-off command
provides a means of switching over from one command
mode to the other.
Turn to OK to confirm and then select contact status for performing this command (as described above).
Turn to OK to confirm.
- ESD close / open: ESD (Emergency Shut Down)
commands are emergency commands and have
priority over all other commands. The emergen-
cy command may be to open or close the valve
or to cause an immediate stop, depending on the use of the
valve.
Turn to OK to confirm and then select contact status for performing this command (as described above).
Turn to OK to confirm
Note: the emergency command cannot be executed when the local / remote selector is on the OFF
position.
Degraded mode see §16.7
- partial stroke: partial stroke is a command for performing periodic function tests (see §16.8).
16.3 LOCAL COMMANDS
Local commands are self-held in the standard configuration (The control only needs to be pressed
once to perform an open or close command).
Proceed as follows to override this feature and require open or close commands to be held down
throughout the action:
Select change from the MENU and turn to OK to confirm.
Select commands in the CHANGE menu and turn to OK to confirm.
Select local command in the COMMANDS menu and turn to OK to confirm.
Select (maintained) and turn to OK to confirm.
For a local command with increments from 0 to 100%, select (0 – 100%).
The command then takes the value of the current position and is displayed under the position. The
right-hand selector can then be used to change the command value in increments of 1%.
16.4 LOCAL STOP
The actuator can be stopped locally in the standard configuration, even if it is set on remote control.
To disable the local stop action when the selector is on remote, select local stop in the COMMANDS
menu and then select (no).
16.5 REMOTE STOP
In the standard configuration, remote stops are performed by opening a contact (whereas the open
or close command is made by closing a contact). To control the remote stop in the same way
as open or close actions, select remote stop in the COMMANDS menu and then select contact (c)=stop
Note: The open and close commands have priority over stop.
AUTO / ON - OFF
contact (c) = auto
contact (o) = auto
ESD CLOSE
contact (c) = command
contact (o) = command

Bernard Controls SQX Series Specifications

General

Brand	Bernard Controls
Model	SQX Series
Category	Controller
Language	English