Super Systems 7EK 31080 - Manual (Page 23)

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DIRECT ACCESS TO SET POINT
When the device is in AUTO mode and in “Normal Display
Mode”, it is possible to access directly to set point
modification (SP or SP2).
Pushing
s or t for more than 2 s, the set point will begin
changing.
The new setpoint value becomes operative since no
pushbutton has been depressed at the end of 2 s
timeout.
SERIAL LINK
The device can be connected to a host computer by a
serial link.
The host can put the device in LOCAL (functions and
parameters are controlled via keyboard) or in REMOTE
(functions and parameters are controlled via serial link)
mode.
The REMOTE status is signalled by a LED labelled REM.
This instrument allows to modify the run time and
configuration parameters via serial link.
The necessary conditions to implement this function are
the following:
1) Serial parameters from SEr1 to SEr4 should be
properly configured.
2) Device must be in the RUN TIME mode
During the downloading of configuration the device
goes in open loop with all output in OFF state.
At the end of configuration procedure, the device performs
an automatic reset and then returns to close loop control.
SMART function
It is used to optimize automatically the control action.
At instrument power up, if the SMART is ON, the second
algorithm will be enabled.
To enable the SMART function, push the FUNC
pushbutton until "Sñrt" parameter is shown.
Pushing
s or t set the display "On" and push the
FUNC pushbutton.
The SMRT LED will turn on or flashing according to the
selected algorithm.
When the smart function is enabled, it is possible to
display but not to modify the control parameters (Pb, ti, td,
and rC).
To disable the SMART function, push the FUNC
pushbutton again until "Sñrt" parameter is shown.
Pushing
s or t set the display "OFF" and push the
FUNC pushbutton. The SMRT LED will turn OFF.
The instrument will maintain the current set of control
parameter and will enabled parameter modification.
NOTES:
1) When ON/OFF control is programmed (Pb=0), the
SMART function is disabled.
2) The SMART enabling/disabling can be protected by
safety key (see P31).
LAMP TEST
When it is desired to verify the display efficiency, push
FUNC pushbutton for more than 10 s. The instrument will
turn ON, with a 50 % duty cycle, all the LEDs of the
display (we define this function "LAMP TEST").
No time out is applied to the LAMP TEST.
When it is desired to come back to the normal display
mode, push FUNC pushbutton again.
During the lamp test the instrument continues to control
the process but no keyboard function is available
(exception made for FUNC pushbutton).
31080-1-00.p65 3/24/00, 11:58 AM 19