H-66
TC Series
※
Manual reset function is applicable only to P / PD control
mode.
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.
SV
PV
Offset
Set below 50.0 as
reset value
Set over 50.0 as
reset value
Offset
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
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
]
Control output MV when input sensor line
is broken [
ErMV
]
● 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.
Display Description
Troubleshooting
OPEN
Flashes if input sensor is
disconnected or sensor is not
connected.
Check input sensor
state.
HHHH
Flashes if measured sensor input
is higher than temperature range.
When input is
within the rated
temperature
range, this display
disappears.
LLLL
Flashes if measured sensor input
is lower than temperature range.
Error
Display
Description
OFF
Lock off
LOC1
Lock parameter group 2
LOC2
Lock parameter group 1, 2
LOC3
Lock parameter group 1, 2, SV setting
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.
※
OFF
,
LOC1
are available only for indicator (TC4 -N N).
Digital input key ( + 3sec.) [
DI-K
]
Parameter
Operation
OFF
OFF
It does not use digital input key function.
RUN/STOP
STOP
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.
RUN
RUN
t
t
t
t
STOP
STOP
RUN
Digital input key
(t: over 3 sec.)
Clear alarm
AlRE
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.
Alarm
operates normally right after clearing alarm.
Auto-tuning
AT
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.)
※
This parameter
AT
appears only when
control method
[
C-MD
]
Parameter group 2
is set as
PID
. When
control method
[
C-MD
]
Parameter group 2
is set as
ONOF
, this parameter is changed as
OFF
.
