ES-2653 Rev.11
M3LU2
Space-saving Signal Conditioners M3-UNIT Series
UNIVERSAL TRANSMITTER
(field- and PC-configurable)
Functions & Features
• Universal input: mV, V, mA, T/C, RTD, resistance and potentiometer
• Easy ‘One-Step Cal’ calibration using the front three control buttons without needing a PC; PC software is also usable
• I/O type and ranges are configurable
• Front control button function can be locked
MODEL: M3LU2–[1]/[2][3]
ORDERING INFORMATION
• Code number: M3LU2-[1]/[2][3]
Specify a code from below for each of [1] through [3].
(e.g. M3LU2-R4/A/Q)
• Specify the specification for option code /Q
(e.g. /C01)
• Use Ordering Information Sheet (No. ESU-2653).
Factory setting (indicated below) will be used if not otherwise specified.
Input: 4 – 20 mA
Output: 4 – 20 mA
INPUT – Field-selectable
DC Current & Voltage
Current
: 0 – 20 mA DC
Millivolt
: -1000 – +1000 mV DC
Voltage
: -10 – +10 V DC
Thermocouple
(PR), K (CA), E (CRC), J (IC), T (CC), B (RH), R, S, C (WRe 5-26),
N, U, L, P (Platinel II)
RTD
Pt 100, Pt 200, Pt 300, Pt 400, Pt 500, Pt 1000,
Ni 100, Ni 120, Ni 508.4 Ω, Ni-Fe 604,
Cu 10 @ 25°C, Pt 50 Ω, JPt 100
Potentiometer
Total resistance 80 – 4000 Ω
Resistance
0 – 4000 Ω
OUTPUT – Field-selectable
Current
0 – 20 mA DC
Voltage
-2.5 – +2.5 V DC
-10 – +10 V DC
[1] POWER INPUT
AC Power
M2
: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)
DC Power
R4:
10 – 32 V DC
(Operational voltage range 9 - 36 V, ripple 10 %p-p max.)
[2] CONFIGURATION OPTIONS
A
: PC and field configurable
B
: Field configurable
[3] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
RELATED PRODUCTS
• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: M3CFG)
Downloadable at our web site.
GENERAL SPECIFICATIONS
Construction
: Stand-alone; terminal access at the front
Connection
: Euro type connector terminal
(applicable wire size: 0.2 to 2.5 mm
2
, stripped length 8 mm)
Housing material
: Flame-resistant resin (gray)
Isolation
: Input to output to power
Overrange output
: -15 to +115 %
(Negative current output is not available.)
Zero adjustment
: -15 to +15 % (front)
Span adjustment
: 85 to 115 % (front)
Burnout (other than current or voltage (V) input)
: Upscale, downscale or no burnout selectable; Also detects wire breakdown and overrange input exceeding the electrical design limit for DC input.
Linearization (thermocouple & RTD input)
: Standard
Cold junction compensation (T/C)
: CJC sensor (included) to be attached to the input terminals
Status indicator LED
: Tri-color (green/amber/red) LED; Blinking patterns indicate operation status of the transmitter.
Configuration
:
PC Configurator
: (Model: M3LUCFG) via Windows PC connected to th front jack.
Programmable features include
:
• I/O type and range
• Zero and span adjustments
• Burnout action
• User’s linearization table setting
• User’s T/C, RTD table setting
(Refer to the instruction manual)
‘One-Step Cal’ calibration
: With I/O type and the full-scale range configured via the internal DIP switches, precise 0 % and 100 % ranges are calibrated via the front control buttons with a help of LED. Also I/O calibration and fine adjustment are available with a PC.
Configurator connection
: 2.5 dia. miniature jack;
RS-232-C level
INPUT SPECIFICATIONS
Input type and range are configurable. See Table 1 for the available input type, the minimum span, the maximum range, the conformance range (T/C) and the input conversion accuracy.
For type and range configuration, refer to the instruction manual.
■
DC current
: 50 Ω resistor incorporated
■
DC mV & voltage
Input resistance
: ≥ 1 MΩ
■
Thermocouple
Input resistance
: ≥ 1 MΩ
Burnout sensing
: ≤ 4 μA
■
RTD (2-wire, 3-wire or 4-wire)
Excitation
: ≤ 0.3 mA
Allowable leadwire resistance
: 20 Ω per wire
■
Resistance
(2-wire, 3-wire or 4-wire)
Excitation
: ≤ 0.3 mA
Allowable leadwire resistance
: 20 Ω per wire
■ Potentiometer
Excitation
: ≤ 0.3 mA
Allowable leadwire resistance
: 20 Ω per wire
OUTPUT SPECIFICATIONS
Output type and range are as follows.
For type and range configuration, refer to the instruction manual.
■ DC Current
Maximum range
: 0 – 20 mA DC
Minimum span
: 1 mA
Conformance range
: 0 – 23 mA DC
Offset
: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance
: Output drive 15 V max. at 20 mA
(Range: Load resistance) 0 – 20 mA : ≤ 750 Ω
■
DC Voltage
Narrow spans
Maximum range
: -2.5 – +2.5 V DC
Minimum span
: 250 mV
Conformance range
: -3 – +3 V DC
Wide spans
Maximum range
: -10 – +10 V DC
Minimum span
: 1 V
Conformance range
: -11.5 – +11.5 V DC
Offset
: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance
: Output drive 10 mA max.; 5 mA for negative output
(Range: Load resistance)
0 – 10 V: ≥ 1 kΩ
-10 – 0 V: ≥ 2 kΩ
0 – 2.5 V: ≥ 250 Ω
-2.5 – 0 V: ≥ 500 Ω
INSTALLATION
Power Consumption
•
AC
:
Approx. 4 VA at 100 V
Approx. 5 VA at 200 V
Approx. 6 VA at 264 V
•
DC
: Approx. 3 W
Operating temperature
: -25 to +60°C (-13 to +140°F)
Operating humidity
: 30 to 95 %RH (non-condensing)
Mounting
: DIN rail
Weight
: 100 g (0.22 lb)
PERFORMANCE
Accuracy
: See Table 1.
Cold junction compensation error
:
±1.0°C at 0 – 50°C (±1.8°F at 32 – 122°F)
Temp. coefficient
:
±0.015 %/°C [±0.008 %/°F] at -5 to +55°C [23 to 131°F] of max. range
±0.03 %/°C [±0.016 %/°F] for the following conditions:
• DC, T/C input spans ≤ 10 mV
• RTD, potentiometer, resistance spans ≤ 80 Ω
• in an ambient exceeding 55°C [131°F] or below -5°C [23°F]
Response time
: ≤ 0.2 sec. (0 – 90%, DC input)
(With the Option A, the Sync Filter set to the fastest frequency on the PC Configurator Software. Default is set to have 0.5-second response.)
Burnout response
: ≤ 10 sec.
Line voltage effect
: ±0.1 % over voltage range
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 2000 V AC @ 1 minute (input to output to power to ground)
CALCULATION EXAMPLES OF OVERALL ACCURACY
•
DC Voltage
1) 0 – 200 mV
Absolute value accuracy (Table 1): 40 μV
40 μV ÷ 200000 μV × 100 = 0.02 % < 0.1 %
➠ Overall accuracy = ±0.1 % of span
2) 0 – 4 mV
Absolute value accuracy (Table 1): 10 μV
10 μV ÷ 4000 μV × 100 = 0.25 % > 0.1 %
➠ Overall accuracy = ±0.25 % of span
•
Thermocouple
1) K thermocouple, -150 – +1370°C
Absolute value accuracy (Table 1): 0.25°C
CJC error (1.0°C) added: 1.25°C
1.25°C ÷ 1520°C × 100 = 0.082 % < 0.1 %
➠ Overall accuracy including CJC error = ±0.1 % of span
2) K thermocouple, 50 – 150°C
Absolute value accuracy (Table 1): 0.25°C
CJC error (1.0°C) added: 1.25°C
1.25°C ÷ (150 – 50)°C × 100 = 1.25 % > 0.1 %
➠ Overall accuracy including CJC error = ±1.25 % of span
•
RTD
1) Pt 100, -200 – 800°C
Absolute value accuracy (Table 1): 0.15°C
0.15°C ÷ (800 – -200)°C × 100 = 0.015 % < 0.1 %
➠ Overall accuracy = ±0.1 % of span
2) Pt 100, 0 – 100°C
Absolute value accuracy (Table 1): 0.15°C
0.15°C ÷ 100°C × 100 = 0.15 % > 0.1 %
➠ Overall accuracy = ±0.15 % of span
STANDARDS & APPROVALS
EU conformity
:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1
Installation Category II
Pollution Degree 2
Input or output to power: Reinforced insulation (300 V)
Input to output: Basic insulation (300 V)
RoHS Directive
EXTERNAL VIEW
The DIP switch setting is required to select output types before setting a precise output range using the PC configurator software.
For detailed information on the configuration and calibration, refer to the instruction manual.
INPUT TYPE, RANGE & ACCURACY
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM