Appendix B.Wiring And Connector Pinouts

The GK-502 is set up for remote sense of the excitation voltage at the load cell, which requires a six-conductor cable (three twisted pairs). If the load cell is not set up for remote sense and only has four conductors, then it will be necessary to modify the cable plug so that pins J and B and pins K and C are shorted together, otherwise the load cell cannot be read.

The P3 readout box will not read remote sense therefore load cells that have been wired for remote sense must be rewired at the connector for non-remote sense.

B.1Wiring Diagram with P3 Readout

6:    

image8.png

Figure 6: P3 Wiring

B.2Wiring Diagram with Remote Sense (GK-502 Readout)

7:    

image9.png

Figure 7: Remote Sense (GK-502) Wiring

B.3Wiring for use with GK 502 Readout Box

Bulkhead (10−pin)

Amp (6−pin)

Circuit Label

Description

Internal Load Cell Wiring

Purple Cable

A

C

S-

Bridge Output -

White

White's Black

B

B

P+

Bridge Excitation +

Red

Red

C

A

P-

Bridge Excitation -

Black¹

Red's Black

D

D

S+

Bridge Output +

Green¹

White

E

 

NC

No Connection

 

NC

F

E

G

Ground for shield

 

Bare Drain Wires

G

 

NC

No Connection

 

NC

H

 

NC

No Connection

 

NC

J

 

RS+

Remote Sense +

Red²

Green

K

 

RS-

Remote Sense -

Black²

Green's Black

table 4: GK-502 Wiring

Notes:

¹ Green and black wires switched on geokon load cells prior to serial number 1190.

² Non-remote sense is optional and must be specified at the time of ordering.

B.4P3 Connection

Bulkhead (10−Pin)

P3 Label

Description

Purple Cable

B

P+

Bridge Excitation +

Red

C

P-

Bridge Excitation -

Red's Black

A

S-

Bridge Output -

White's Black

D

S+

Bridge Output +

White

 

D120

No Connection

NC

 

D350

No Connection

NC

 

D1K

No Connection

NC

F

Shield

Shield Connection

Bare Drain Wires

table 5: P3 Wiring