Bernard Controls STX Series User Manual

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Select change in the MENU and turn to OK to confirm.
Select commands in the CHANGE menu and turn to OK to confirm.
Select aux. command 1 or aux. command 2
in the COMMANDS menu and turn to OK to confirm. Select a
command with the blue selector.
By default, aux. command 1 is assigned to local command inhibit
and aux. command 2 to ESD close.
If aux. command 1 and aux. command 2 are set to emergency
functions, aux. command 2 has priority.
Description of the commands:
- local/remote replaces local/remote switch on the actuator for enabling remote control or local
control from a remote location.
Turn to OK to confirm and then select contact status for performing
this command:
Turn to OK to confirm.
- local + remote/remote: same as above, but this command allows local and remote modes
to be enabled at the same time.
- local command inhibit: local command inhibit is a remote command. This command overrides
any open or close commands made locally and enables remote commands, even if the local/
remote selector on the actuator is on local.
Turn to OK to confirm and then choose whether or not to maintain local stop capability.
The standard setting is for local stop and general shutdown to remain possible on the actuator.
Select local off (no) to inhibit local stop as well.
Turn to OK to confirm and then select contact status for performing
this command (as described above).
Turn to OK to confirm.
- open / close inhibit: this command is used to prevent
the actuator from opening or closing.
For example, a main valve has a by-pass valve and should not
open unless the by-pass valve is already open. In this case,
a limit switch on the by-pass valve could be used to prevent
the main valve from opening unless the limit switch has been
activated.
Turn to OK to confirm and then select contact status for perfor-
ming this command (as described above). Turn to OK to confirm.
AUX. COMMAND 1
no assigned
local/remote
local+remote/remote
local command inhibit
open inhibit
close inhibit
auto / on-off
ESD close
ESD open
ESD stop
partial stroke
LOCAL / REMOTE
contact (c) = remote
contact (o) = remote
LOC CMD INHIBIT
local off (yes)
local off (no)
LOC CMD INHIBIT
contact (c) = inhibit
contact (o) = inhibit
OPEN INHIBIT
contact (c) = inhibit
contact (o) = inhibit
If you just want to check settings without
making changes, select check instead
of change in the main menu.
Aux. command 1Selector local/remote
Actuator
terminal
11
1rst choice: closed contact = remote commands.
2nd choice: open contact = remote commands
- 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 STX Series Specifications

General

Brand	Bernard Controls
Model	STX Series
Category	Controller
Language	English