8672 datasheet(20/37 Pages) PHOENIX

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AXL F UTH4 1H

8672_en_02

PHOENIX CONTACT

8.8

Universal AC and DC current acquisition in

combination with a current transducer

Any AC or DC currents with 300 V AC safe isolation accord-

ing to EN 50178, EN 61010, such as heating currents, can

be acquired via the ±5 V voltage input (terminal points 02

and 12) using a current transducer.

For signal conditioning, use the MCR-S-1-5-UI(-SW)-DCI

current transducer from Phoenix Contact, for example.

Figure 13

Measurement of an AC or DC current signal at

the -5 V voltage input ... +5 V DC in combina-

tion with a current transducer (heating current

acquisition)

Connection notes

Use encapsulated thermocouples.

Always connect the thermocouples using twisted pair equal-

izing conductors.

Use shielded twisted pair equalizing conductors for a cable

length from 10 m.

For mV sensors in environments prone to interference as

well as for sensor cables which are longer than 10 m. use

shielded twisted connecting cables (e.g., LiYCY (TP) 2 x 2 x

0.5 mm

For TC sensors, use the corresponding shielded TC con-

necting cable according to DIN EN 60584-3/ISO 60584-3.

For optimum shield connection directly before the module,

use the AXL SHIELD SET Axioline shield connection set

(see ordering data).

Please refer to the UM EN AXL SYS INST user manual for

information on how to install the set and connect the shield.

For installation in a control cabinet: connect the cable shield

to functional earth ground immediately after the cables enter

the control cabinet. Route the shield as far as the Axioline F

temperature module without interruption.

Configuration notes

Always position temperature modules at the end of the sta-

tion. For modules that must be positioned next to a bus cou-

pler, the typical measuring tolerance can be increased by up

to 0.9 K.

AC/DC input current, 0 mA ... 200 mA up

to 0 A ... 11 A, 15 Hz ... 400 Hz

Out

-5 V DC ... +5 V DC output voltage

MCR-S-1-5-UI(-

SW)-DCI

Current transducer

Make sure that the shielded twisted sensor

cable is no more than 5 m in length from the

current transducer to the temperature mod-

ule.

If longer cable lengths are required, connect

appropriate converters or signal conditioners

upstream.

The MCR range from Phoenix Contact offers

a comprehensive range of products for this.

UOut

IIn

Power

24 V

50 mA AC

MCR-S-1-5-UI(-SW)-DCI

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