MODEL: 18JM

18JM SPECIFICATIONS

ES-1865 Rev.11 Page 1/3

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

Rack-mounted DCS Signal Conditioners 18-RACK

POTENTIOMETER CONVERTER

(field-programmable)

Functions & Features

• Providing two DC outputs proportional to a

potentiometer or slidewire position input

• Microprocessor based

• Constant voltage excitation allows

use with pots with total resistances from 100 Ω – 10 kΩ

without affecting accuracy

• 75 % zero/span adjustments with minimal interaction

• Linearization data programmable via hand-held

programmer PU-2x

• Loop testing via hand-held programmer PU-2x

• Second channel output available at the front terminals

and at the Standard Rack connector

Typical Applications

• Tank levels

• Positions

• Linearizing non-linear signal characteristics by the

sensor's linking mechanism

MODEL: 18JM–166–R

ORDERING INFORMATION

• Code number: 18JM-166-R

• Linearization data (max. 16 points)

Use Ordering Information Sheet (No. ESU-1669) to specify

linearization data when the I/O signals are non-linear.

INPUT POTENTIOMETER

1: Total resistance 100 Ω – 10 kΩ

OUTPUT 1

Voltage

6: 1 – 5 V DC (Load resistance 2000 Ω min.)

OUTPUT 2

Voltage

6: 1 – 5 V DC (Load resistance 2000 Ω min.)

POWER INPUT

DC Power

R: 24 V DC

(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

RELATED PRODUCTS

• Programming Unit (model: PU-2x)

• PC configurator software (model: JXCON)

Downloadable at M-System’s 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 for the PC configurator for applicable

cable types.

GENERAL SPECIFICATIONS

Construction: Rack-mounted; terminal access via screw

terminals on the front and connector on the rear; terminal

cover provided

Connection

Input: M3.5 screw terminals (torque 0.8 N·m)

Output 1: Connector

Output 2: M3.5 screw terminals (torque 0.8 N·m)

and connector

Power input: Supplied from connector

Screw terminal: Nickel-plated steel

Isolation: Input to output 1 to output 2 to power

Linearization: 16 points max. within the range of -15.00 –

+115.00 % input or output; represented as percentage of

full-scale

Adjustments: Programming Unit (model: PU-2x);

linearization data (Unused resistance of the potentiometer's

total resistance can be programmed with the linearization

table.), zero and span, simulating output, etc.

(Refer to the users manual of JXCON for the adjustments

configurable with JXCON.)

INPUT SPECIFICATIONS

Minimum span: 25 % of total resistance (set with the

Programming Unit [model: PU-2x] or PC configurator

software [model: JXCON])

Excitation: 0.25 V DC

INSTALLATION

Current consumption: Approx. 60 mA

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)