Ransburg, Interlocks and i/o – Ransburg MicroPak Controller A11789 User Manual

Page 12

INTERLOCKS AND I/O

Interlock and I/O connections are made to con-

nector P3 on the rear of the controller. P3 con-

sists of three, 8-position terminal blocks A, B,

and C (see Figure 3). To wire to these terminal

blocks, perform the following (see Figure 4):

1. Loosen the two (2) screws of P3’s connector

housing and remove P3 from the controller.

2. Loosen the four (4) screws holding the termi-

nal block assembly to the inside of the connector

housing and remove the terminal block assem-

bly from the housing.

3. Feed the I/O Interlock cable(s) through the ca-

ble grommet attached to the connector housing

and pull out the other side. It may be necessary

to remove the cable grommet to fit the cable(s)

through. If so, slide the grommet connections

onto the cable(s) in the order shown in Figure

4 before pulling the cable through the connector

housing.

For maximum noise immunity, all wiring

should be run in cables having a foil shield

with an overall braided shield. The foil shield

provides 100% shielding, while the braid

provides a means of making proper 360°

shield terminations at the cable ends.

NOTE

If multiple I/O / Interlock cables are

used, connect the exposed 1.5” cable braids

together using copper tape.

NOTE

4. Strip the jacket off the cable(s) 3” from the end

and remove the braid 1.5” from the end (see Fig-

ure 5).

5. Strip the individual cable wires, install appro-

priate wire ferrules, and connect to the terminal

blocks according to Table 1.

6. Rotate the connector housing to achieve de-

sired routing of the cable bundle (right or left),

then reinstall the terminal block assembly into

the connector housing.

7. Tighten the connector grommet ensuring the

grommet spring makes 360° contact with the

exposed cable braid/copper tape for maximum

noise immunity.

For maximum noise immunity, the shields of the

I/O and interlock cables should also be connect-

ed to earth ground at the end opposite to the Mi-

croPak controller connections.

If it is necessary or desired to run the interlock

and I/O cable(s) through conduit, an adapter can

be readily purchased that converts the PG21

male threads of the P3 connector housing to

3/4” NPT male threads. This adapter is available

through McMaster-Carr as their Part Number

7842K7.

MicroPak Controller - Installation

Ransburg

CP-06-01.1