Super Systems 7EK 31082 - Manual (Page 23)

18 GB
MANUAL FUNCTION
The MANUAL mode function can be accessed (only if
enabled by P38=On) by depressing the MAN pushbutton for
more than 1 sec or by closing the external contact 2 (see P24
parameter).
The command from keyboard is accepted and executed
only if the display is in "Normal Display Mode".
The command from external contact is always accepted.
When in MANUAL mode the LED's MAN annunciator will
light up while the lower display shows the valve position (if
configured) or power output values if time proportioning
control output is configured.
When time proportioning control output is configured, the
power of the "rEv" output is shown in the two most
significant digit field while the power of the "dir" output (if
present) is shown in the two less significant digit field.
The decimal point between the two values will be flashing
to indicate instrument in MANUAL mode.
Note: The instrument shows the "rEv" output = 100 with
the graphic simbol " ".
The instrument shows the "dir" output = 100 with the
graphic simbol "
".
The power output can be modified by using s and t
pushbuttons.
By depressing, for more than 1 second, MAN again, or by
opening the contact 2, the device returns in AUTO mode.
The transfer from AUTO to MANUAL will be in accordance
with P40 parameter set.
The transfer from MANUAL to AUTO will be bumpless
(this function is not provided if integral action is excluded).
If transfer from AUTO to MANUAL is performed during the
first part of SMART algorithm (TUNE) when returning in
AUTO the device will be forced automatically to the
second part of the SMART algorithm (ADAPTIVE).
At power up the device will start as selected with P39.
Notes:
1)
When device is configured for two control outputs and
start up occurs in Manual mode with power output set
to 0, the signal output will be in accordance with the
following formula: "rEv" output - "dir" output = 0.
2) When the AUTO/MANUAL control is selectable by
logic input and P39 = 0 or 1, the instrument starts in
accordance to the logic input status and ,for MANUAL
mode, it will start with a power output equal to zero.
2) The instrument is able to assure a 1% resolution for
the potentiometer indication only if the calibrated span
is greater than 50 % of the potentiometer stroke.
ENABLE/DISABLE THE CONTROL OUTPUT
NOTE: this function is available only when OUT 1 is
programmed as proportional control putput.
When the instrument is in "normal display mode", by keeping
depressed for more than 5 s
s and FUNC pushbuttons, it is
possible to disable the control outputs. In this open loop
mode the device will function as an indicator, the lower
display will show the word OFF and all control outputs will be
in the OFF state.
When the control outputs are disabled the alarms are also
in non alarm condition.
The alarms output conditions depend on the alarm action
type (see P26-P28).
Depress for more than 5 s
s and FUNC pushbuttons to
restore the control status.
The alarm standby function, if configured, will be activated
as per power up.
If a shut down occures when the control output is
disabled, at instrument power up the control output will be
disabled again.
DIRECT ACCESS TO SETPOINT
When the device is in AUTO mode and in “Normal Display
Mode”, it is possible to modify directly the selected set
point (SP, SP2, SP3 or SP4).
Pushing
s or t for more than 2 s, the setpoint will begin
changing.
The new setpoint value becomes operative since no
pushbutton has been depressed at the end of 2 s
timeout.
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