ES-5155 Rev.3

M2EAXR

Super-mini Signal Conditioners with
Display Mini-M M2E Series

RTD ALARM

(PC programmable, dual or quad alarm trip)
Functions & Features
• Accepts direct input from a RTD and provides a linearized process signal
• Wide selection of RTD
• Leadwire resistance compensation
• OEL display with good visibility
• Provides relay outputs at preset temperature input
• Quad or dual trip
• Front LCD display indicating values in scaled engineering unit range is used to program the module
• Adjustable deadband (hysteresis)
• ON delay time selectable
• Hi/Lo trip and energized/de-energized coil independently selectable for each setpoint
• Settable with front button
• Enclosed relays
• Relays can be powered by 200 V AC and 100 V DC
• High-density mounting on DIN rail
Typical Applications
• Annunciator
• Various alarm applications

MODEL: M2EAXR–[1]–[2][3]

ORDERING INFORMATION

• Code number: M2EAXR-[1]-[2][3]
Specify a code from below for each of [1] through [3].
(e.g. M2EAXR-2-M2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01/SET)

INPUT – Field-selectable

RTD
JPt 100 (JIS'89), Pt 100 (JIS'89), Pt 100 (JIS'97, IEC),
Pt 50Ω (JIS'81), Ni 508.4Ω, Pt 1000, Ni 100, Cu 10 @ 25℃

[1] OUTPUT

2: 4 points; N.O. or make contact
3: 4 points; N.C. or break contact
5: 2 points; SPDT or transfer contact

[2] POWER INPUT

AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[3] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
TERMINAL SCREW MATERIAL
/S01: Stainless steel
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
(No. ESU-5155)
Default setting will be used if not otherwise specified.

RELATED PRODUCTS

• M2EA configurator software (model: M2EACFG)
Downloadable at our web site.
A dedicated cable is required to connect the module to the PC. Please refer to the internet software download site or the users manual (EM-5151) for the M2EA configurator for applicable cable types.

GENERAL SPECIFICATIONS

Construction: Plug-in
Connection: M3 screw terminals (torque 0.8 N·m)
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (gray)
Isolation: input to L1 or L4 alarm output to L2 or L3 alarm output to power
(for output code 5, L3 alarm output and L4 alarm output is not available)
Burnout: Upscale standard; downscale or no burnout optional by programming
Configuration: Program with front buttons or Via PC.
Programmable features include: Refer to the parameter list.
Configurator connection: 2.5 dia. miniature jack;
RS-232-C level

DISPLAY

Display functions: Displays and sets measured range, engineering unit
Display size: Approx. 15.6 × 20.8 mm (0.61” × 0.82”)
Number of pixels: 68 × 95 (horizontal × vertical)
Character color: Yellow (reversing display of the current value and the alarm setting value when alarm is tripped)
Display life: Approx. 60000 hours
(Expected time for the Display brightness to be reduced to 50 % when the Display is used continuously with brightness setting 2 in 25 ℃)
Display type: OEL display
Display digit: Negative 5 digits, positive 6 digits (-99999 to 999999)
Decimal point position: None, number of decimal places 1 or 2

INPUT SPECIFICATIONS

Input: 2- or 3-wire RTD
Maximum leadwire resistance: 50 Ω per wire
Sensing current:
　Pt 100, JPt 100, Pt 50 Ω, Ni 100, Cu 10: approx. 1.0 mA
　Pt 1000, Ni 508.4 Ω: approx. 0.2 mA
Measurement rang: -5 to +105% of input setting value
Refer to the operating manual (EM-5155-B) for changing input range, setting value.

OUTPUT SPECIFICATIONS

■ Quad Alarm
Relay rating: 100 V AC @ 1 A (cos ø = 1)
120 V AC @ 1 A (cos ø = 1)
240 V AC @ 0.5 A (cos ø = 1)
30 V DC @ 1 A (resistive load)
Maximum switching voltage: 250 V AC or 125 V DC
Maximum switching power: 120 VA or 30 W
Minimum load: 5 V DC @ 10 mA
Mechanical life: 5 × 10⁷ cycles
■ DUAL ALARM
Relay rating: 100 V AC @ 4 A (cos ø = 1)
120 V AC @ 4 A (cos ø = 1)
240 V AC @ 2 A (cos ø = 1)
30 V DC @ 4 A (resistive load)
Maximum switching voltage: 250 V AC or 125 V DC
Maximum switching power: 480 VA or 150 W
Minimum load: 5 V DC @ 10 mA
Mechanical life: 5 × 10⁷ cycles

INSTALLATION

Power Consumption
•AC:
Max. 6 VA at 100 V
Max. 7 VA at 200 V
Max. 8 VA at 264 V
•DC: ≤ 2.5 W
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 10 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: Approx. 200 g (0.44 lb)

PERFORMANCE

Setpoint accuracy (trip point accuracy)
Whichever greater table 1 accuracy value or ±0.1 % of 100 % input value ±1 digit
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time (Filter time constant: 0 sec.): ≤ 0.5 sec.
(0 – 100 % at 90 % setpoint)
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 L1 or L4 alarm output to L2 or L3 alarm output to power to ground)
(for output code 5, L3 alarm output and L4 alarm output is not available)

CALCULATION EXAMPLES OF OVERALL ACCURACY

[Example] Input Range Pt 100 (JIS'97, IEC), 0 – 100°C

100 ℃ × 0.1 % = 0.1 ℃
0.2 ℃ is higher thus 0.2 ℃ is selected
0.2 ℃ ÷ 100 ℃ = 0.2 %
Setpoint Accuracy = 0.2% ±1 digit

STANDARDS & APPROVALS

EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1
Measurement Category II (output)
Installation Category II (power)
Pollution Degree 2
Input or output to power: Reinforced insulation (300 V)
Input to output: Basic insulation (300 V)
L1 or L4 alarm output to L2 or L3 alarm output:
Basic insulation (300 V)
RoHS Directive

EXTERNAL VIEW

Refer to the operating manual (EM-5155-B) for detailed procedures.

PARAMETER LIST

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM