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Electrical installation, P transducer, J13 terminal wiring the shutdown device – Liquid Controls Differential Pressure Transducer User Manual

Page 9

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9

To wire the P transducer to a lectrocount

register (cont.):

7. Route the ∆P transducer cable through a cable gland in a

port on the back of the LectroCount register. Secure the

cable gland. LC recommends running the cable through a

cut to length piece of weatherproof conduit.

8. Connect the four ∆P transducer wires to terminal block J3

on the LectroCount register CPU board and J16 on the

81944 board.

• Black to J3 terminal 46

• White to J3 terminal 51

• Yellow to J16 terminal 57

• Blue to J16 terminal 58

• Red to J16 terminal 59

9. Run the red jumper wire (provided with the ∆P transducer

kit) from the J8 terminal 32 to J16 terminal 59 (+5V).

The shutdown device should

draw no more than 1 A.

J13 Terminal

WIrInG the shutdoWn devIce

Typically, a ∆P transducer operates in conjunction with an output control circuit or a shutdown device, such as a

valve or a dead-man. The shutdown control must also be wired to the LectroCount register and should draw no

more than 1 A.
When the programmed shutdown value is met or exceeded, the LectroCount register depends on the shutdown

device to end the delivery. If the differential pressure meets or exceeds the shutdown differential pressure value

programmed into the LectroCount register, the register signals the shutdown device, and the shutdown device ends

the delivery. If no shutdown device is present and the shutdown value is met, the LectroCount register will stop

registering the delivery and print out a delivery ticket, but fuel will continue to be dispensed.

To wire the shutdown control device to a lectrocount

register (cont.):

1. Route two wires (AWG determined by device) cable from

the shutdown control device through a cable gland in a

port on the back of the LectroCount register. Secure the

cable gland. LC recommends running the cable through

weatherproof conduit.

2. Connect the two wires from the shutdown control device

to terminal block J13, terminals 14 and 15.

electrIcal InstallatIon

11

12

13

PRINTER

SERIAL 485

TERMINAL

POWER

COUNTER

MH1

CTS RXD TXD RTS

GND

GND

485+A

485-B

CTS RXD TXD RTS +VP

EART

H

GN

D

GN

D

IN

1

IN

2

IN

3

IN

4

+5V OU

T

+V

P

GN

D

+12-24

V

MH4

J20

J6

J3

J2

J1

J7

J7

C2

24

25

∆P Transducer

+5V(Out)/Jumper (59 to 32)

A/Blue (58)

+5V/Red (59)

B/Yellow (57)

GND/White (51)

+VP/Black (46)

B

LectroCount Board