MODEL: M3LU2

M3LU2 SPECIFICATIONS

ES-2653 Rev.8 Page 2/6

http://www.m-system.co.jp/

GENERAL SPECIFICATIONS

Construction: Stand-alone; terminal access at the front

Connection: Euro type connector terminal

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