High
function type with 5-digit display of measured value
New
overshoot suppression function "JyroNavi"
Models LT450 and
LT470 digital indicating controllers feature all functions, which are necessary
for various control applications, including newly developed PID algorithms
and a learning type overshoot suppression function "JyroNavi". |
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Input Specifications |
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Input signal |
|
Thermocouple… |
B, R, S, N, K, E, J,
T, U, L, WRe5-WRe26, W-WRe26, PtRh40-PtRh20,
Platinel II |
Resistance thermometer…Pt100,
JPt100
DC voltage…0 to 20mV, 0 to 5V, 0 to
10V
DC current…4 to 20mADC
A 250
shunt resistor (sold separately) and the 5V (1 to
5V) are used. |
|
Accuracy rating |
±0.1% ± 1 digit (at reference operation
conditions)
Exception: ±0.3% ± 1 digit for
PtRh40-PtRh20 |
|
Reference junction compensation
accuracy |
±1.0°C (23°C±10°C), ±2.0°C (-10°C to
50°C) |
|
Measuring unit |
°C or °F |
|
Sampling cycle |
About 0.2 second |
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Burnout |
Up scale/down scale
(selectable) |
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Scaling |
Ranges/scales of DC voltage/current input
are optional settings.
(-19999 to
20000) |
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Scale decimal point |
0 to 4 |
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Control Specifications |
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Control cycle time |
Approx. 0.2 second |
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Control system |
On-off pulse type PID system
Current
output type PID system
SSR drive pulse type PID
system
On-off servo type PID system
Voltage
output type PID system
Multiple control type
(on-off pulse type/current output type/SSR drive
pulse type) PID system
* 2-position control is
selectable. |
|
Auto-tuning |
Standard (Manual setting of PID constants
enabled) |
|
PID constants |
4 sets switching (interlocking to
SV)
|
P… |
0.1 (0.0) to 999.9%
(0 = 2-position) |
|
I… |
0 to 9999
seconds |
|
D… |
0 to 9999
seconds | |
|
PID deadband (gap) |
0.0 to 9.9% (4 sets switching, interlocking
to SV) |
|
Anti-reset windup |
High limit … 0.0 to 100.0%, Low limit …
-100.0 to 0.0% |
|
Overshoot suppression function |
On/off selectable (4 sets independent
switching, interlocking to SV, independent keeping
of learned results) |
|
Control operation |
With direct/reverse action
switching |
|
Output specifications |
On-off pulse type
|
|
Output
signal |
… |
On-off
pulse conductive signal |
|
|
Contact
ratings |
… |
Resistive
load: |
100VAC 5A, 240VAC
5A, 30VDC 5A |
|
|
|
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Inductive
load: |
100VAC 2.5A, 240VAC
2.5A, 30VDC 2.5A |
|
|
Pulse
cycle |
… |
Approx. 1
second to 180 seconds
adjustable |
Current output type
|
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Output
signal |
… |
4 to
20mADC |
|
|
Load
resistance |
… |
600
or less |
SSR drive pulse type
|
|
Output
signal |
… |
On-off
pulse voltage signal
At ON 12VDC ± 20% (load
current … 20mA or less)
At OFF 0.8VDC or
less |
|
|
Pulse
cycle |
… |
Approx. 1
second to 180 seconds
adjustable |
On-off servo type
|
|
Output
signal |
… |
On-off
conductive signal |
|
|
Feedback
resistance |
… |
100
to 2.5k |
|
|
Contact
ratings |
… |
Resistive
load: |
100VAC 5A, 240VAC
5A, 30VDC 5A |
|
|
|
… |
Inductive
load: |
100VAC 2.5A, 240VAC
2.5A, 30VDC 2.5A |
|
|
|
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Minimum
load 5VDC or more, 10mADC or
more |
Voltage output type
|
|
Output
signal |
… |
0 to
10VDC |
|
|
Output
resistance |
… |
Approx.
10 |
|
|
Load
resistance |
… |
50k
or
more | |
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General Specifications |
|
Rated power voltage |
100V to 240VAC 50/60Hz universal power
supply |
|
Allowable power voltage |
90 to 264VAC |
|
Working temperature range |
-10 to 50°C (maximum 40°C at closed
installation) |
|
Working humidity range |
20 to 90%RH (no dew
condensation) |
|
Power consumption |
Maximum about 16VA |
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Installation |
Panel installation |
|
Weight |
About 250 to 350g (LT450)
About 350 to
500g (LT470) |
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International Standards |
|
CE |
EN61326 + A1 Class A, EN61000-3-2 +
A14
EN61000-3-3, EN61010-1 + A2 |
|
UL |
UL3111-1 |
|
CSA (C-UL) |
C22.2 No. 1010 |
|
IP |
NEMA4X (IP66) (front
protection) |
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