MODEL: LCF Plug-in Signal Conditioners M-UNIT [2] OUTPUT STRAIN GAUGE TRANSMITTER

MODEL: LCF Plug-in Signal Conditioners M-UNIT [2] OUTPUT STRAIN GAUGE TRANSMITTER
MODEL: LCF
Plug-in Signal Conditioners M-UNIT
0: Specify (strain gauge and excitation)
STRAIN GAUGE TRANSMITTER
[2] OUTPUT
(remote sensing, super-high speed, 10 V / 120 mA
excitation)
Functions & Features
•Provides a DC output signal compatible with a bridge type
strain gauge utilized in load cells, pressure transducers
•Response time 300 μsec.
•Six-wire remote sensing compensates for lead resistance
variations
•Excitation adjustable from 2 V to 10 V, max. 120 mA
•Wide-range adjustment: 0 – 80 % for zero, 100 – 20 % for
span
•Three-way isolation
•High-density mounting
Current
A: 4 – 20 mA DC (Load resistance 750 Ω max.)
B: 2 – 10 mA DC (Load resistance 1500 Ω max.)
C: 1 – 5 mA DC (Load resistance 3000 Ω max.)
D: 0 – 20 mA DC (Load resistance 750 Ω max.)
E: 0 – 16 mA DC (Load resistance 900 Ω max.)
F: 0 – 10 mA DC (Load resistance 1500 Ω max.)
G: 0 – 1 mA DC (Load resistance 15 kΩ max.)
Z: Specify current (See OUTPUT SPECIFICATIONS)
Voltage
1: 0 – 10 mV DC (Load resistance 10 kΩ min.)
2: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3: 0 – 1 V DC (Load resistance 1000 Ω min.)
4: 0 – 10 V DC (Load resistance 10 kΩ min.)
5: 0 – 5 V DC (Load resistance 5000 Ω min.)
6: 1 – 5 V DC (Load resistance 5000 Ω min.)
4W: -10 – +10 V DC (Load resistance 10 kΩ min.)
5W: -5 – +5 V DC (Load resistance 5000 Ω min.)
0: Specify voltage (See OUTPUT SPECIFICATIONS)
Typical Applications
• Weighing system for tanks, hoppers, silos
• Weighing system using cranes
• Float level meter utilizing strain gauges
50
(1.97)
[3] POWER INPUT
80
(3.15)
136
(5.35)
mm (inch)
AC Power
B: 100 V AC
C: 110 V AC
F: 120 V AC
G: 200 V AC
H: 220 V AC
J: 240 V AC
MODEL: LCF–[1][2]–[3][4]
[4] OPTIONS
ORDERING INFORMATION
Input Signal Indicator
blank: Without
/E: With (0.0 - 100.0 % display)
• Code number: LCF-[1][2]-[3][4]
Specify a code from below for each [1] through [4].
(e.g. LCF-2A-B/E)
•Special output range (For codes Z & 0)
[1] INPUT STRAIN GAUGE
1: 1 mV/V
12: 1.25 mV/V
15: 1.5 mV/V
2: 2 mV/V
3: 3 mV/V
4: 4 mV/V
5: 5 mV/V
6: 10 mV/V
7: 20 mV/V
http://www.m-system.co.jp/
GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Housing material: Flame-resistant resin (black)
Isolation: Input to output to power
Overrange output: Approx. -10 to +120 % at 1 – 5 V
Excitation: Adjustable from 2 to 10 V (front); limited to ≤ 15
V when the remote sensing terminals are open.
Zero adjustments (tare): 0 – 80 % (front)
(May not applicable when the excitation voltage is changed
after shipment.)
Span adjustment: 100 – 20 % (front)
(May not applicable when the excitation voltage is changed
LCF SPECIFICATIONS
ES-1358 Rev.5 Page 1/3
MODEL: LCF
after shipment.)
LCD meter: Indicating input; 0.1 % increments
EN 61010-1
Installation Category II
Pollution Degree 2
Input or output to power – Basic insulation (300 V)
INPUT SPECIFICATIONS
Input: Bridge voltage from load cells
Allowable leadwire resistance:
Total Resistance [Ω] (of all wires) < (Bridge Resistance [Ω] /
Excitation [V]) × 1.2 [V]
•Strain Gauge
Rated output from strain gauge: 1 – 20 mV/V;
Input to the LCF must be over 3 mV.
•Excitation: 2 – 10 V adjustable (5 V standard)
Maximum current: 120 mA
OUTPUT SPECIFICATIONS
• DC Current: 0 – 20 mA DC
Minimum span: 1 mA
Offset: Max. 1.5 times span
Load resistance: Output drive 15 V max.
• DC Voltage: -10 – +12 V DC
Minimum span: 5 mV
Offset: Max. 1.5 times span
Load resistance: Output drive 1 mA max. at ≥ 0.5 V
INSTALLATION
Power input
•AC: Operational voltage range: rating ±10 %,
50/60 ± 2 Hz, approx. 5 VA
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 400 g (0.88 lbs)
PERFORMANCE in percentage of span
Accuracy: ±0.1 %
Linearity: ±0.05 %
Temp. coefficient: ±0.02 %/°C (±0.01 %/°F)
Response time: ≤ 300 μsec. (0 – 90 %), 2 kHz (-3 dB)
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute (input or output
to power to ground)
1000 V AC @ 1 minute (input to output)
STANDARDS & APPROVALS
CE conformity:
EMC Directive (2004/108/EC)
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive (2006/95/EC)
http://www.m-system.co.jp/
LCF SPECIFICATIONS
ES-1358 Rev.5 Page 2/3
MODEL: LCF
EXTERNAL VIEW
LCD Meter
Excitation Adj.
Coarse Zero Adj.
Fine Zero Adj.
Coarse Span Adj.
Fine Zero Adj.
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)
CLAMP
(top & bottom)
20
(.79)
7.8 (.31)
DIN RAIL
35mm wide
8
7
6
5
2–4.5 (.18) dia.
MTG HOLE
25 (.98) deep
11–M3.5
SCREW
50 (1.97)
107 (4.21)
80 (3.15)
80 (3.15)
35.4 (1.39)
4
9
3
10 11
1
2
40 (1.57)
136 (5.35)
[3.3 (.13)]
50 (1.97)
• When mounting, no extra space is needed between units.
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
*
STRAIN
GAUGE
Z
+ 10
– 11
+ 3
– 9
S+ 4
S– 5
Isolation
S
Output
Driver
Low Drift
Amplifier
1 +
OUTPUT
2 –
EXC.
Low Drift
DC Volt.
Stabilizer
7 U
Remote
Sensing
POWER
8 V
6
Base Socket
Close across the terminal 3 – 4 and 5 – 9 when the remote sensing is not used.
*Option /E
Specifications are subject to change without notice.
http://www.m-system.co.jp/
LCF SPECIFICATIONS
ES-1358 Rev.5 Page 3/3
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