Bernard Controls STX Series User Manual

36 37
PROBLEM CAUSE REMEDY
The display is off Actuator power supply Check power supply voltage (terminals L1, L2 and L3 for 3-phase supply).
The voltage value is shown on the nameplate.
Blown fuse Check fuse and replace if required (the fuse is fitted on the transformer).
No response Display in menu mode Set local / remote selector to off and then on local to change to command
mode (display: %position)
IR link active Commands cannot be made using the selectors if an IR link is active (IR
symbol on the display). Turn off the infrared link.
Motor thermal switch trip A black square is shown at the bottom centre of the display to indicate that
an alarm has been activated. Go to menu / check / alarms to see whether a motor overheating alarm is present. The actuator will be available again when the motor has cooled down
No response and the key or ESD symbol is displayed
Local command override or ESD command active
Check Aux. command 1 or 2 options in the command menu to see whether a command override or emergency command has been set up and check the status (open/closed) of the contact used to perform this remote command. Then check the connection on the client terminal to see whether it corres- ponds to a command override or emergency command. For example, if the configuration setting is on aux. command 1, loc cmd inhibit and contact (o)= inhibit, a remote contact will have to be established on terminal 11 to cancel the override.
The actuator operates in remote mode, but not in local
Local / remote selector on remote or off (stop)
Switch the local / remote selector to the local position.
Local command override active (key symbol displayed) or local /remote selection performed remotely
Check Aux. command 1 or 2 options in the command menu to see whether a command override has been set up and check the status (open/closed) of the contact used to perform this remote command. Then check the connection on the client terminal to see whether it corres- ponds to a command override. For example, if the configuration setting is on aux. command 1, loc cmd inhibit and contact (o)= inhibit, a remote contact will have to be established on terminal 11 to cancel the override.
Menu cannot be accessed Selector on remote or off, or local
command override active
The menu can only be accessed via the selectors in local mode, i.e. with the selector on local and no override on local control. Set the selector on local and carry out checks on aux. commands 1 & 2 indicated above.
32 TROUBLEShOOTING
32.1
INTELLI+
If there is any doubt about the operation of the system, first set the local / remote selector in the
local position and then operate the open and close controls.
29 FUSE PROTECTION
The INTELLI+ power supply system includes a transformer and a number of fuses.
Primary: 6.3x32 mm - 0.5 A - quick-action fuse (located on the transformer).
Secondary: Internal circuits protected by automatic cut-out (no user action needed) 24V auxiliary
power supply on terminal protected by automatic cut-out (no user action needed)
30
USING IN SEPARATED BOx
INTELLI+ can be provided in separated box to be removed from the actuato up to 50 meters. BER-
NARD CONTROLS provides weather proof boxes with two weather proof connection boxes: one to
be used by the customer, the other to be used to connect INTELLI+ to the actuator.
Explosion proof version is also available.
To plan a power wire and a control wire between the actuator and the box. The control wire must
be armoured. Check the wiring before powering up.
The commissioning is the same as the integrated INTELLI+.
31 MAINTENANCE
ST actuators have life-long lubrication and there need no specific maintenance.
However, the condition of the stem and the stem nut should be checked periodically to ensure
that they are clean and properly lubricated.
We recommend establishing a regular programme of test movements on motor drive units which
are rarely used.
In the case of the actuator with the battery option
Depending on the actuator configuration, a «Low Battery» message appears on the display
or remotely when the battery is too low.
For the explosion proof versions, you must replace the batteries by this type of battery:
2 batteries OMNICEL ER14505HD Lithium Thionyl Chloride (Li-SOCl2) type.
For the non-explosion proof versions, you should replace the batteries by the battery type shown
above or choose an other type with this requirement: AA, 2.2Ah, 3.6V, 400mA, -40°/+85°C.

Bernard Controls STX Series Specifications

General

Brand	Bernard Controls
Model	STX Series
Category	Controller
Language	English