15
4.2 Operation
4.2.1 Manual operation
4.2.2 Automatic operation
In manual mode, the indicator
MAN
will be lit, the output can be altered using the
Inc/Dec
key or turning the digital knob,
the output is limited by
Max Output[18]
and
Min Output[19]
.
The measured tension will be changed during the altering of the output, after the measured tension of the web is stable,
the controller is ready to be switched to the automatic operation mode. To switch to automatic mode, just press the
AUTO/MAN
key.
The control output is controlled by the
OUTPUT ON/OFF
switch,
press this key,
the output switches between ON and OFF.
OUTPUT ON/OFF indicator is lit: Control output is ON;
OUTPUT ON/OFF indicator is off: Control output is OFF, output becomes 0.
Note that the control output also is controlled by the
OUTPUT ON/OFF button
(MC6 and
MCC), repeatedly press this key, the output switches between ON and OFF.
repeatedly
Please close switch
in automatic control mode.
If MC1 is open, controller will turn into stopping mode,
AUTO
indicator flashes, the output will
become P.on.
Note that if the
Sync. Mode[42]
function is enabled, the Run/Stop of the system will not only
controlled by MC1, but also by the speed of tension sensing roller.
MC1
Auto Monitor
PV.
:
24.9kg
SV.
:
25.0kg
Out
:
39.5%
Taper Tension
SP.
:
18.0kg
SV.
:
25.0kg
OUT
:
28.5%
Man Monitor
PV.
:
24.9kg
SV.
:
25.0kg
Out
:
39.5%
Automatic mode: constant tension control
Automatic mode: taper tension control
OUTPUT ON/OFF switch
and Indicator
Run/Stop Switch
Measured tension
Alter the setting tension using the
digital knob or Inc/Dec key
Output
Target tension
Output
Alter the setting tension using
the digital knob or Inc/Dec
Observe the change of the measured tension while altering the output
Alter the output using the digital knob or
Inc/Dec
key
After finishing the tension calibration and the measured tension is right, the controller can be tested with manual
operation and automatic operation. First use manual operation, if the tension system works well(get the stable tension),
the controller can be switched to automatic mode to perform closed loop tension control.
In automatic mode, the indicator
AUTO
will be lit, the setting tension can be altered using the digital knob or the
Inc/Dec
keys. The adjustable range is limited by the
Max Setvalue[18]
and
Min Setvalue[19]
.
The setting tension refers to the process of control, the value expected to reach the goal of tension. In automatic mode,
the controller compares the measured tension with the desired tension, called the 'setting tension', and regulates the
output power to make them the same.
The measured tension is referred to as the Process Value, or 'PV' for short while the setting tension is referred to as the
Setting Value, or 'SV' for short.
If the tension measurement fails, the error message will appear and the controller will be automatically switched to the
manual mode, the automatic/manual mode can not be switched at this time.
Note that in stopping mode, the
AUTO
LED flashes.
To switch to manual mode, just press the
AUTO/MAN
key.
While switching the controller from manual mode to automatic mode, the measured tension before switching will be used
as the setting tension for automatic control, this makes the smooth transition. So it’s better to operate the system in
manual mode first, after the web tension gets stable the system should be switched to automatic mode.
Tension Controller TC818
OUTPUT
ON/OFF
MC1
MCC
MC6
MCC
OUTPUT ON/OFF button
