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PROACTIV MECHANICAL DETAIL 10.8 Technical Reference Manual Chapter Issue 5, Jan 15 MECHANICAL DET AIL NOTE Handling active squeegees. Do not mis hand le or drop active squeegees. This may cause damage to the active eleme…

PROACTIV

ELECTRICAL DETAIL

Chapter Issue 5, Jan 15 Technical Reference Manual 10.7

Drive Board The drive board and the node board are located together, behind the print

carriage bearing support, on the left-hand-side of the printer. The drive board

generates the signals required to drive the active elements of the squeegees.

Figure 10-1 Electronic Control Boards Located on the Printer L.H.S.

Power comes from the M37 power supply enclosure, it supplies the following

voltages: 42V, +24V SW, +24V US and +12V.

Drive signals activate a squeegee via N18PL14. This cable divides to provide

independent drive signals to the front and rear squeegees.

NOTE

I/O Connections are shown in the Machine Control Chapter.

Node Board The node board routes signals from the drive board, or the sensors and

switches, as follows:

Signals routed from the drive board to the node board across JP1:

• Enable and status indicators

Feedback signals from the node board to the drive board across JP1:

• The system is ready to activate the squeegees (enable switch)

• A squeegee has moved from dwell to contact height or vice-versa (front

and rear proximity sensors)

NOTE

I/O Connections are shown in the Machine Control Chapter.

Drive Board

Node Board

N18PL13

N18PL14

JP1

N18SK01

N18PL05

N18PL04

N18PL08

PROACTIV

MECHANICAL DETAIL

10.8 Technical Reference Manual Chapter Issue 5, Jan 15

MECHANICAL DETAIL

NOTE

Handling active squeegees. Do not mishandle or drop active squeegees. This

may cause damage to the active elements. Always stow away securely. Do not

clean too vigorously or by fully immersing in a liquid.

The active squeegees are fitted to the squeegee mechanism using the top

mounted locking thumbscrews. To prevent the squeegees from being fitted to

the wrong holder each squeegee is constructed with a keyway and a pair of

locking thumbscrews. The thumbscrews on the rear squeegee have their hole-

centres further apart than the hole-centres on the front squeegee. The keyway

aligns with the dowel pins on the squeegee holder.

The electrical cables connect each squeegee to the drive board via connectors

on the mount assembly bracket (9SK74/75). The cables carry power and

signals to drive the active elements in each squeegee. The cables are loomed

through the drag chain back to the drive board to plug (N18PL14).

Proximity switches located above each squeegee are used to sense when the

squeegee moves from dwell height to contact height. This movement causes

Front Active Squeegee

1 Front and Rear Proximity Sensors

2 Active Elements

3 Squeegee Blade

4 Electrical Connector Assembly

5 Locking Thumbscrews

6Keyway

PROACTIV

MECHANICAL DETAIL

Chapter Issue 5, Jan 15 Technical Reference Manual 10.9

proximity switches to trigger, if ProActiv is on, the active drive to the squeegee

blades turns ON. The active squeegee remains on until it is: turned off by the

operator, or the machine is powered down, or emergency stopped, or the

squeegee returns to either the dwell position or the home position.