Optional features – Pinnacle Systems MG User Manual

Page 14

Auto Blank [patent # 5,243,183]

Description: Allows user to program the exact size and

location of an object (i.e., a conveyor, table, work piece,

etc.) automatically and can detect any movement in the

object causing the light curtain to shut down.
Application: With the obstruction in place, turn the

key swith from “OFF” to any mode of operation. If the

object(s) do not exceed the total allowable size, the unit

will energize the safety outputs.
Standard Operation: If the obstruction is moved or

removed, the unit will issue a “MOVE” fault, but will

re-energize the safety outputs when the obstruction

is returned to the original position. Standard operation

allows for a total of eight beams to be blocked anywhere

in the curtain (they do not have to be next to each other).
Optional Operation: If the obstruction is moved or

removed, the unit will issue a “MOVE” fault and lockup,

requiring you to re-program the obstruction.
Troubleshooting: If you get a “MOVE” fault when

the obstruction did not move, it is possible that you

are just barely covering a beam and either vibration or

reflections are causing the beam to become uncovered.

The uncovered beam then causes a fault.
To Activate Feature: This feature must be ordered and

requires exchanging the computer chips (see Installation

Procedures, “Controller Module Setup”).

WARNING: Leave key switch in OFF/RESET

position while installing, setting up, and testing the

light curtain. Use Auto Blank only after you are

able to get a clear signal from the curtain with no

obstruction.

The term “Auto Blank” is an abbreviation which stands

for Automatic Programmable Beam Blanking. Auto

Blanking is controlled by a multi-position keyswitch and

has three distinct modes of operation:

Must be reset if auto blank obstruction moves

or guard penetrated. The AUTO BLANK

obstruction must remain in its exact location

permanently. Any movement in the AUTO BLANK

obstruction and/or additional guard penetration

will latch the light curtain in a RED condition and

must be reset via the keyswitch.

NOTE: If no obstructions were programmed in, the

guard will still latch in a RED condition should the

guard be penetrated.

Must be reset if auto blank obstruction moves.

The Auto Blank obstruction must remain in its

exact location permanently. This works like Mode

1 except guard penetrations will not latch in a RED

condition.

Mode 2 with floating blank. This mode works

like Mode 2 with the addition of a Floating Blank

which is set to allow a one beam float (see

Optional Features, Floating Blank”).

NOTE: If no obstructions were programmed in, the

guard will still allow a one beam float.

Programming: To program, turn the keyswitch into the

OFF/RESET position and place the obstruction(s) in the

guarded area. Now, turn the keyswitch into the desired

mode of operation. The exact size and location of the

object(s) are now in memory. The Depth Penetration

Factor D(pf) must be set to account for the one beam

float (see Optional Features, “Floating Blank”).

Diagnostics Display

Auto Blank detected an object (the number

indicates the size of the object).

RDY

No objects programmed in, keyswitch in

Mode 1 or 2.

No objects programmed in, keyswitch in

Mode 3

SIZE

Obstruction size exceeded a total of eight

beams.

PENT Penetration of the light curtain occurred

while keyswitch was in Mode 1.

MOVE Auto Blank obstruction moved.

IMPORTANT: Place Auto Blank keyswitch into

OFF/RESET position and remove any obstructions

while aligning light curtain. Do not use Auto Blank

until light curtain is correctly aligned (see Installation

Procedures, “Alignment Procedure”).

The keyed selector switch is designated to be supervisory

controlled. After installation, the safety key should be

removed and controlled only by the safety supervisor or

authorized plant personnel.

Optional Features

Metal Box Controller Module