ES-2662 Rev.15
M3LR
Space-saving Signal Conditioners M3-UNIT Series
RTD TRANSMITTER
(field- and PC-configurable)
Functions & Features
• Accepts an RTD input and provides an isolated, linearized DC signal
• Easy ‘One-Step Cal’ calibration using the front three control buttons without needing a PC; PC software is also usable
• Both input and output type and range are configurable
• Front control button function can be locked
• Linearization and burnout
MODEL: M3LR–R4/[1][2]
ORDERING INFORMATION
• Code number: M3LR-R4/[1][2]
Specify a code from below for each of [1] and [2].
(e.g. M3LR-R4/A/UL/Q)
• Specify the specification for option code /Q
(e.g. /C01)
• Orders will be shipped with default factory settings (3-wire Pt 100, 0 – 100°C input / 4 – 20 mA output).
INPUT – Field-selectable
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
OUTPUT – Field-selectable
Current
0 – 20 mA DC
Voltage
-2.5 – +2.5 V DC
-10 – +10 V DC
POWER INPUT
DC Power
R4:
10 – 32 V DC
(Operational voltage range 9 - 36 V, ripple 10 %p-p max.)
[1] CONFIGURATION OPTIONS
A
: PC and field configurable
B
: Field configurable
[2] OPTIONS (multiple selections)
Standards & Approvals
blank
: CE marking
/UL
: UL approval, CE marking
Other Options
blank
: none
/Q
: Option other than the above (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 (UL not available)
RELATED PRODUCTS
• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: M3CFG)
Downloadable at our web site.
GENERAL SPECIFICATIONS
Construction
: Small-sized front terminal structure
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 %
Zero adjustment
: -15 to +15 % (front)
Span adjustment
: 85 to 115 % (front)
Burnout
: Upscale (default), downscale or no burnout selectable
Linearization
: Standard
Status indicator LED
: Tri-color (green/amber/red) LED; Blinking patterns indicate operation status of the transmitter.
Configuration
:
PC Configurator
: (Model: M3LRCFG) via Windows PC connected to th front jack.
Programmable features include
:
• I/O type, number of wires and range
• Zero and span adjustments
• Burnout action
• User’s RTD table setting
(max. 300 points, input resistance specified
within 0 – 30 kΩ)
(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
■
RTD
: See Table 1.
Number of wires
: 2, 3 or 4 wires
Excitation
: ≤ 1.0 mA
Allowable leadwire resistance
: 20 Ω per wire
Temperature range
: See Table 1.
OUTPUT SPECIFICATIONS
■ DC Current
Maximum range
: 0 – 20 mA DC
Minimum span
: 1 mA
Conformance range
: 0 – 24 mA DC
(Negative overrange current below 0 mA is not available.)
Offset
: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance
: Output drive 12 V maximum
■
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 1 mA maximum
INSTALLATION
Power consumption
•
DC
: Approx. 3 W
Operating temperature
: -25 to +65°C (-13 to +149°F)
Max. 55°C (131°F) for UL approval
Operating humidity
: 0 to 95 %RH (non-condensing)
Mounting
: DIN rail
Weight
: 100 g (0.22 lb)
PERFORMANCE
Accuracy
: See Table 1 and refer to calculation examples of overall accuracy.
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°F) of max. range at -5 to +55°C (23 to 131°F)
Response time
: ≤ 0.9 sec. (0 – 90 %)
Burnout response
: ≤ 10 sec.
Line voltage effect
: ±0.1 % over voltage range
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 1500 V AC @ 1 minute
(input to output or power to ground)
500 V AC @ 1 minute (output to power)
CALCULATION EXAMPLES OF OVERALL ACCURACY
■
CALCULATION EXAMPLES OF OVERALL ACCURACY IN %
1) Pt 100, 0 – 500°C, 4 – 20 mA DC output
Absolute value accuracy (Table 1): 0.15°C
0.15°C ÷ 500°C × 100 = 0.03 % < 0.1 %
Output span 16 mA (20 – 4) ≥ 2 mA (max. span 20 mA × 0.1) ➠ No adding 0.2 %
➠ Overall accuracy = ±0.1 % of span
2) Pt 100, 0 – 100°C, 2.0 – 2.5 V DC output
Absolute value accuracy (Table 1): 0.15°C
0.15°C ÷ 100°C × 100 = 0.15 % > 0.1 %
Output span 0.5 V (2.5 – 2.0) ≤ 0.5 (max. span 5 V × 0.1) ➠ Add 0.2 %
➠ Overall accuracy = 0.15 + 0.2 = ±0.35 % of span
STANDARDS & APPROVALS
EU conformity
:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
RoHS Directive
Approval
:
UL/C-UL general safety requirements
(UL 61010-1, CAN/CSA-C22.2 No.1010-1)
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