7647 datasheet(9/28 Pages) PHOENIX

Part #	7647

Description	Inline analog strain gauge input terminal,two precise inputs, 4, 6-wire connection method

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Manufacturer	PHOENIX [PHOENIX CONTACT]

Direct Link	http://www.phoenixcontact.com

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IB IL SGI 2/P-PAC

7647_en_04

PHOENIX CONTACT

9

7

Local diagnostic indicators

Figure 2

Local diagnostic indicators

An open circuit is detected according to the following table:

Note regarding open circuit message

During power up or configuration the system does not detect

whether a sensor is connected or if a cable break has oc-

curred (all cables disconnected) due to the measuring princi-

ple.

In this case, you will not obtain any valid data. As such, take

the time to ensure that the sensor is fully connected.

If an open circuit message is output, first remove the cause

prior to resetting the message.

If you do not remove the cause of the open circuit message

and perform a voltage reset or configure the module, the mod-

ule itself will behave according to the following table.

Function identification

Green

Designa-

tion

Color

Meaning

D

green

Diagnostics (bus and logic voltage)

TR

green

PCP communication

CH 1

green

Diagnostics of channel 1

Green ON

Channel 1 is OK

green OFF Channel 1 not connected or not

supplied or open circuit

CH 2

green

Diagnostics of channel 2

Green ON

Channel 2 is OK

green OFF Channel 2 not connected or not

supplied or open circuit

Faulty sensor cable

Open-circuit message in

diagnostics

+U

V

No

GND

Uv

Yes

+U

0

Yes

-U

0

Yes

+U

d

Yes

-U

d

Yes

TR

CH2

CH1

D

CH1

CH2

TR

D

Open circuit message trig-

gered by

Behavior following volt-

age reset or configuration

No sensor connected/cable

break

Malfunction not detected and

not reported

Defective sensor cable (GN-

D

Uv, +U0, -U0, +Ud, -Ud)

Malfunction is detected and

reported

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