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Digital Indicating Controller LT3700 pages
DIGITAL INDICATING CONTROLLER
LT370 Series
LT370 series, 1/4 DIN size, new digital indicating
controllers feature all functions including newly
developed
PID
algorithms
and
overshoot
suppression function which are convenient in
various control applications.
Setpoint (SV), control output (OUT) or
blank
[Parameter or data monitoring
(operation mode) in setting mode]
MODEL
LT37
Measured value (PV)
(Parameter item in setting mode)
0Input signal
0: Standard universal input
3: High temperature universal input
Status display
Mode key Down key Up key Select/
entry key
Control output 1 (Heating)
1: On-off pulse type
3: Current output type
5: SSR drive pulse type
6: Voltage output type
Communications interface/
remote contacts input (option)
0: Not provided
R: RS-232C + 2-point remote contacts input
A: RS-422A + 2-point remote contacts input
S: RS-485 + 2-point remote contacts input
1: 2-point remote contacts input
FEATURES
Large size 4-digit LED display
Universal input
New PID algorithms built-in
New overshoot suppression function built-in
MODBUS protocol communications for easy
system configuration
Various functions are built-in for easy control.
Only 7mm thickness of the front panel
Conformance to CE, UL and CSA
(UL, CSA: Approval pending)
Water and dust protection conforming to
NEMA250 4X (IEC529 IP66) (option)
Retransmission signal output (option)
MEASURING RANGES
Control output 2 (Cooling) (option)
(As this option is combined with the option of 2-point
additional event, please specify the code of additional
event as 1 or 3.)
0: Not provided
1: On-off pulse type
5: SSR drive pulse type
(As this option is combined with the option of 2-point
additional event, please specify the code of additional
event as 1 or 3.)
Input type
0: Not provided
1: 4 to 20mA
2: 0 to 1V
3: 0 to 10V
Standard
universal
Input range
B
0.0
to
1820ºC
32
to
R
0.0
to
1760ºC
32
to
3200ºF
S
0.0
to
1760ºC
32
to
3300ºF
3200ºF
N
to
1300ºC
32
to
2350ºF
-200
to
1370ºC
-300
to
2450ºF
E
T/C
0.0
K
Additional event output (option)/
CT (option) *
0: Not provided
1: Event output (EV)2 points
2: Heater disconnection (CT)
3: Event 2-point + heater disconnection (CT)
-199.9
to
700.0ºC
-300
to
1250ºF
J
-199.9
to
900.0ºC
-300
to
1650ºF
T
-199.9
to
400.0ºC
-300
to
700ºF
U
-199.9
to
400.0ºC
-300
to
700ºF
L
Water-protection
0: Not provided
1: NEMA4X (IP66)
-199.9
to
900.0ºC
-300
to
1650ºF
WRe5-WRe26
0
to
2310ºC
32
to
4190ºF
W-WRe26
* The heater disconnection (CT) is only applied to the
Control output 1 of on-off pulse type or SSR drive
pulse type.
to
2310ºC
32
to
4190ºF
0
to
1880ºC
32
to
3400ºF
Platinel II
0
to
1390ºC
32
to
2500ºF
Pt100
-199.9
to
850.0ºC
-300
to
1500ºF
JPt100
RTD
0
PtRh40-PtRh40
Power voltage
A: 100 to 240VAC (universal)
D: 24VDC (option)
High temp.
universal
-199.9
to
649.0ºC
-300
to
1200ºF
DC
voltage
5V
DC
current
20mA *
0 to 5V
(0.000 to 5.000)
4 to 20mA
(1.000 to 5.000
Converted
value)
into
-
voltage
Scaling
setting
range:
-19999 to 20000
Decimal place can
be adjusted.
Note: For the current input, a 250Ω shunt resistor (sold separately) is required.
The ranges marked with
are built in.
1
PSE-305A
PSE-
