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DSCP62 Configuration Guide

Thermocouple-to-DC Current/Voltage

Converter with Relay Output

Description

Each DSCP62 Thermocouple Converter provides a single channel of thermocouple

input which is amplified, linearized and converted to a high-level current or voltage

output. Thermocouple type, measurement range, filter, output type and range,

and fault indication may be configured by dip-switch. An auxiliary relay output

is provided to generate an alarm or act as a thermostat. Power can be applied

directly to the converter's terminals or through a DIN rail mounted bus connector

accessory, eliminating the need to wire power to each individual converter.

Specifications

Typical at T

=+25°C and +24VDC power

Module

Input (selectable)

Thermocouple Type

EN 60584-1

Input Impedance

Accuracy

Cold Junction Error

Thermal Drift

A/D Conversion

Processing

Response Time, 90% Span

(selectable)

CMRR

Isolation

Dip-Switch Configuration

Status Indicators (LED)

Output (selectable)

Current

Current Output Protection

Fault Output

Voltage

Auxiliary Relay Output

Power Supply

Power Consumption

Hot Swapping

Environmental

Operating Temp. Range

Storage Temp. Range

Relative Humidity

IP Protection

Emissions

Immunity

Mechanical Dimensions (w x h x d)

Housing

Connections

Weight

Dataforth Corporation

3331 E. Hemisphere Loop • Tucson, AZ 85706 USA • Toll Free: 800-444-7644 • Tel: 520-741-1404 • Fax: 520-741-0762 • Email: [email protected] • www.dataforth.com

DSCP62

J, K, E, N, S, R, B, T

Measurement range: Depends on

thermocouple type and dip-switch setting

Span: 100°C (min)

10MΩ

±0.1% (max)

1.5°C (max)

<120ppm/°K

14-bit

Floating point 32-bit

<25ms (without filter), <55ms (with filter)

>135dB, referred to power supply side

1500Vrms (1 minute), 3-Way

Sets input and output ranges, sensor type,

filter and faults

Internal fault, configuration error,

connection fault

0 to 20, 4 to 20, 20 to 0 or 20 to 4mA

Load resistance: 500Ω (max)

25mA (max)

102.5% or 105% of full-scale value in

case of over-range

0 to 5, 1 to 5, 0 to 10 or 10 to 0VDC

Load resistance: 2kΩ (min)

Rated 60mA (max) at 24VAC

19.2 to 30VDC

<600mW (24mA at 24VDC)

Yes

–20°C to +65°C

–40°C to +85°C

0 to 90%, Noncondensing

IP20

EN61000-6-4

EN61000-6-2

0.24" x 3.67" x 4.04"

(6.2mm x 93.1mm x 102.5mm)

Terminal housing for mounting on

35mm DIN 46277

Spring cage clamp

1.6 ounces (46g)

Isolated Analog Signal Conditioning Products

Range and precision of the input

Thermocouple

Range

–210 to 1200°C

–200 to 1372°C

–200 to 1000°C

–200 to 1300°C

–50 to 1768°C

250 to 1820°C *

–200 to 400°C

* Up to 250°C, the output is considered equivalent to 0°C.

Auxiliary Output

The auxiliary output is designed to drive an indicator, a relay of greater

power, or the input of a supervisory control system. Through this output the

DSCP62 module can generate an alarm or be utilized like a thermostat. The

normal state of the output depends on the configuration for the fault of the

primary output.

Setting the threshold

The regulation of the threshold is performed through a button located under

the front cover of the module and accessible through the hole using a small

screwdriver.

• Press and release the button. The primary output will start to represent

the value of threshold and the red LED will flash slowly.

• If the button is not pressed again within 5 seconds, the system will

return to standard functioning.

• Each time the button is pressed there is an increase or decrease of the

primary output of approximately 0.2%; the direction of the variation

depends on the configuration of the output.

• If the button is not released but continues to be pressed, a continuous

3% increase starts after 2 seconds.

• When the maximum/minimum value of the chosen scale is reached, the

cycle starts again.

• During regulation of the threshold, the auxiliary output follows standard

functioning, opening and closing as previously set.

• After 5 seconds of no button pressing, the set value is memorized and

the module continues with standard functioning.

Dip-switch SW2.7 details

SW2.7

Regulation type

OFF

Furnace *

Refrigerator *

* In case of choice of direct output: 0(4) to 20mA, 0(1) to 5(10)V

Installation rules

This module is designed for assembly on a DIN 46277 rail. Assembly in a

vertical position is recommended to increase the module's ventilation. Be

sure that no raceways or other objects that compromise aeration are posi-

tioned in the vicinity, and do not position the module above equipment that

generates heat. We recommend positioning the module in the lower part of

the control panel or container compartment. We also recommend rail-type

assembly using the Power Bus connector, which eliminates the need to con-

nect the power supply to each module.

Mean error

0.025% + 0.29°C

0.025% + 0.4°C

0.025% + 0.2°C

0.025% + 0.42°C

0.025% + 1.34°C

0.025% + 1.19°C

0.025% + 1.87°C

0.025% + 0.31°C

Fault

Standard state

Upscale

Closed (LED ON)

Downscale

Open (LED OFF)

DSCP

Resolution

0.12°C

0.17°C

0.92°C

0.19°C

0.66°C

0.59°C

0.9°C

0.13°C

Set threshold

Decrease

Increase