Features – Pinnacle Systems SLT Series User Manual

Page 15

SLT Series

Features

Exter

External R

nal R

nal Rela

ela

elay Chec

y Chec

y Check*

The External Relay Check feature allows the SLT Series

system to monitor an external relay using the external

relay’s secondary set of isolated contacts, provided that

they are N.O. captive contacts. This captive contact will

maintain the identical position as the primary set of

contacts on the external relay . The External Relay

Contact must be opened when the light curtain is in a

RED condition. Failure of the External Relay Contact

will show up on the Diagnostics Display as a Code 6. If

this failure lasts longer then one second, the light curtain

will lock up and must be powered down to clear the code

(see the Wiring Diagram).

FFloa

loa

loating Blank

ting Blank

Important:

Place the Floating Blank keyswitch

into the 2cm position and remove any obstructions

while aligning light curtain. Do not use Floating

Blank until light curtain is correctly aligned (see

Installation Procedure).

The keyed lock 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.

The Floating Blank option is controlled by a multi-position

keyswitch located on the Receiver Pylon providing the

SLT Series system the cap ability of blanking out any

beam. The keyswitch allows gaps of either 2cm (no

beams blocked), 4cm (one beam blocked), 6cm (two

beams blocked), or 8cm (three beams blocked) in the

light curtain. This permits the work piece to be passed

through the guarded area and move around as long as

the number of blocked beams does not exceed the

keyswitch position set. The beams do not have to be

blocked adjacent to one another.

Location of the light curtain from the point of
operation must include the Depth Penetration Factor
D(pf) equivalent to the beam spacing.

Floating Blank

Worst Case

D(pf)

Keyswitch

Minimum

Penetration

Position

Object Sensitivity

Factor

2cm (0 beams)

1.25" / 2.00"

3.5" / 6.0"

4cm (1 beam)

2.00" / 3.50"

6.0" / 11.0"

6cm (2 beams)

2.75" / 5.00"

8.5" / 16.0"

8cm (3 beams)

3.50" / 6.50"

11.0" / 21.0"

Latc

tching R

hing R

hing Rela

ela

elays

(standard on Perimeter guards)
The Latching Relays option causes the light curtain to

latch in a RED condition after a RED condition is

encountered (penetration). The display reads “8”. This

is used for guarding an area against intrusion, otherwise,

without this option the light curtain would only stay RED

as long as the intrusion was blocking the light curtains’

field of view. A push button is used to reset the curtain

and the software requires that the button be cycled by

clearing the curtain.

To Install:

Find the correct color wire from the Receiver

cable (see Wiring Diagram). Install a N.O. push button

between the orange wire and +24VDC.
P101 should have a plug installed already. Remove this

plug and you will de-activate the latching relay feature.

This allows you to align the curtain. Put back the plug

when you are finished aligning the curtain.
U204 is where you hook up your reset button to the outer

pins 1 & 4.

* Although this option is standard, it must be requested at time of

order and cannot be used in conjunction with the Cincinnati

Interface.