Description

Array Length / #

Beams

Receiver Output

PVA300P6

Emitter/Receiver Pair

+5 to 30V dc

PNP (Sourcing)

PVA300P6E

Emitter

PVA300P6R

Receiver

PVA375N6

Emitter/Receiver Pair

375 mm (15 in) Long, 16

Beams

0V dc

NPN (Sinking)

PVA375N6E

Emitter

PVA375N6R

Receiver

PVA375P6

Emitter/Receiver Pair

+5 to 30V dc

PNP (Sourcing)

PVA375P6E

Emitter

PVA375P6R

Receiver

Overview

The PVA Series Parts Verification Array is a simple, easy-to-use light screen suited to many part assembly and object detection applications.

The PVA has two components: an emitter and a receiver. The receiver's solid-state output interfaces to a system controller, which is pre-

programmed by a supervisor for a specific sequence of tasks. Mounted so that the beams stretch across each bin in an assembler’s work

station, the PVA then signals the assembler (by means of easy-to-see job lights) which bins contain items to be picked in a given operation

and in what order they should be picked.

As the assembler reaches into each bin, the system senses if the correct part has been taken, then signals the next bin in the sequence. The

system may be wired to signal an alarm for the assembler and/or a supervisor in the event an incorrect part is selected.

The major benefit of a PVA-driven system is increased efficiency, due to simplified job training, increased quality control (no skipped

components), and reduced rework and inspections. The PVA speeds the resumption of work after breaks and other distractions. And it is

ideal for multilingual workplaces where communication may be an issue.

Installation

Multiple sensor pairs located farther than the sensor's effective maximum range (approximately 2 m or 6.5 ft) from one another are unlikely

to cause crosstalk problems. However, when multiple sensor pairs are mounted in a confined area, take care to avoid crosstalk between

them. To avoid crosstalk:

• Alternate the relative position of adjacent emitter/receiver pairs.

• Alternate the Frequency configuration of adjacent pairs.

Mount emitter and receiver pairs parallel, with both cable ends pointing the same direction.

Emitter

Receiver

Receiver

Emitter

Emitter

Receiver

Receiver

Emitter

Figure 1. Example—Correct Positions

Receiver

Emitter

Cable ends pointing in opposite directions

Emitter

Receiver

Non-parallel orientation

Figure 2. Example—Incorrect Positions

1 Only cabled models (2 m (6.5 ft) unterminated integral cable) are listed. For 2 m (6.5 ft) pigtail with Euro-style Quick-disconnect fitting, add "Q" to the

model number (for example, PVA100N6Q).

2 See Configuration on page 4

PVA Pick-to-Light Array

2

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