Autonics TC4W Handmatig - Pagina 13
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TC Series
Manual reset [ REST ]
When selecting P/PD control mode, certain temperature
difference exists even after PV reaches stable status
because heater's rising and falling time is inconsistent due
to thermal characteristics of controlled objects, such as
heat capacity, heater capacity. This temperature difference
is called offset and manual reset [ REST ] function is to set/
correct offset.
● When PV and SV are equal, reset value is 50.0%. After
control is stable, PV is lower than SV, reset value is over
50.0% or PV is higher than SV, reset value is below
50.0%.
● Manual reset [ REST ] by control result
SV
PV
※ Manual reset function is applicable only to P / PD control
mode.
Control output MV when input sensor line
is broken [ ErMV ]
The function to set control output MV in case of open error.
Users are able to set by ON/OFF setting or MV setting. It
executes control output by set MV regardless of ON/OFF
or PID control output.
Digital input key (
Parameter
OFF
OFF It does not use digital input key function.
RUN/STOP
STOP
Clear alarm
AlRE
Auto-tuning
AT
Parameter lock [ LOC ]
A function to prevent changing SV and parameters of each
setting group. Parameter setting values are still possible to
check when parameter lock is set.
Display
Description
Lock off
OFF
Lock parameter group 2
LOC1
Lock parameter group 1, 2
LOC2
Lock parameter group 1, 2, SV setting
LOC3
※ OFF , LOC1 are available only for indicator (TC4 -N N).
H-66
Set below 50.0 as
reset value
Offset
Offset
Set over 50.0 as
reset value
+
3sec.) [ DI-K ]
Operation
Pauses control output. Auxiliary output (except loop break alarm, sensor break alarm)except Control output
operates as setting. Hold the digital input keys for 3 sec. to restart.
t
t
RUN
STOP
RUN
Clears alarm output by force.
(only when alarm option is alarm latch, or alarm latch and standby sequence 1/2
This function is applied when present value is out of alarm operation range but alarm output is ON.
operates normally right after clearing alarm.
Starts/Stops auto-tuning. This function is same as auto-tuning[AT] of parameter group 1. (You can start auto-
tuning [AT] of parameter group 1 and stop it by digital input key.)
※ T his parameter
AT appears only when
control method
[C-MD]
Parameter group 2
Cool / Heat function [ O-FT ]
Generally there are two ways to control temperature, one
(Heat-function) is to heat when PV is getting down (Heater).
The other (Cool-function) is to cool when PV is getting
higher (Freezer).
These functions are operating oppositely when it is ON/
OFF control or proportional control. But in this case PID
time constant will be different due to PID time constant
will be decided according to control system when it is PID
control.
● Cool-function [ COOL ] and heat-function [ HEAT ] must
be set correctly according to the application, if set as
opposite function, it may cause a fire. (If set cool-function
[ COOL ] at heater, it will be maintained ON and it may
cause a fire.)
● Avoid changing heat-function to cool-function or cool-
function to heat-function when the unit is operating.
● It is impossible to operate both function at once in this
unit. Therefore, only one function should be selected
only.
SV High/Low limit [ H-SV / L-SV ]
● It sets SV high/low limit Limit range of using temperature
within temperature range for each sensor, user can set/
change set temperature (SV) within SV high limit [ H-SV ]
to SV low limit [ L-SV ]. ( ※ L-SV＞H-SV cannot be set.)
● When changing input type [ IN-T ], SV high limit [ H-
SV ] and SV low limit [ L-SV ] of using temperature will
be initialized as max./min.value of sensor temperature
range automatically.
Digital input key
t
t
(t: over 3 sec.)
STOP
RUN
control method
[C-MD]
is set as ONOF, this parameter is changed as OFF.
Error
Display Description
Flashes if input sensor is
disconnected or sensor is not
OPEN
connected.
Flashes if measured sensor input
HHHH
is higher than temperature range.
Flashes if measured sensor input
LLLL
is lower than temperature range.
.)
Parameter group 2
is set as PID. When
Troubleshooting
Check input sensor
state.
When input is
within the rated
temperature
range, this display
disappears.
Alarm