safety controller PLSG for our light grids

Muting controller

PLSG K

Muting sensors / Muting lamp / Start button directly connectable
1 - 4 cycle control
programming of blanking functions
restart interlock / valve control
provides Muting function
2 external Muting lamp connectable
snap-on controller for the light curtain / light grid
LCD display for easy diagnosis and programming
small design


IEC 61508	ISO 13849-1	EN 954-1

Funtional description

Muting is the brief interrruption of a safety light barrier and is used wherever this is rquired by the the working cycle. For doing so, the Muting channels 1A, 2A and 1B and 2B must be under voltage. Muting is permitted only if the nature of the work cycle excludes any access into the hazardous area, or during non-hazardous machine movements. This is the case whenever, for instance, material is conveyed through the protctive field in a way that there is no space for entering the area between material and safety light barrier, or if there is no hazardous movement. Application fields are e.g. safeguarding of pallettizers, narrow-aisle storage facilities, fork lift access areas, manufacturing cells, bending presses, rubber presses, presses with automatic material feeders, etc ...

Functions

Functions	PLSG1K	PLSG2K	PLSG3K
Functions	Muting- controller	Muting- controller	Universal- controller
Muting(Bridging) with Muting time monitoring	•	•	•	If material is conveyed through the protective field, or if, due to manufacturing conditions, in a certain sector of the work cycle any stopping during interruption of the protective field must be excluded.
Delayed end of Muting	-	•	•	Manipulation safe Muting if conveyed material flow exits the dangerous zone towards the outside.
Immediate end of Muting when protective field is cleared again	-	•	•	State of Muting remains only as long as it is basically required
Override	•	•	•
contactor- and valve control	with	with / without	with / without
restart interlock	with	with / without	with / without
restart interlock only during the dangerous movement	-	-	•	Activation of Start button is necessary only if , during the dangerous movement, the protctive field has been interrupted
cycle control	-	-	•	(1 to 4 work cycles) Control of the machine is defined by the working rhythm of the operator.
Emergency OFF circuit monitoring	-	-	•
Two-hand start	-	-	•
two level output turn-off delay	-	•	•	Output OSSD 2 switches Off delayed, and OSSD 1 and OSSD3 switches off undelayed for safety reevant variable speed drives, e.g. robot safeguarding , are utilized.
display	-	•	•	2 X 8 Words Display
BLVT-Light grid barriers. Fading out functions 11 kinds of protection field fading ou	-	-	•	during first or rarely changed fading out the protection field fading out in the light grid barrier takes place via unique programming with the Hex-schwitches after a tension RESET. The fading out function remains stored in the light grid barrier up to a new programming
Option... R 2 safety relays	•	•	•	switching contacts floating: 4 normally open contacts, 2 openers and 2 x of 2 normally open contacts in row (of both safety relays ever 1 normally open contact)
Option... M (not with... S) expenditure for measured value	•	•	•	serial expenditure for measured value of the highest darkened eye of the ULVT/BLVT-Light grid barriers RS 485 interface/9600 Baud, 1Startbit, 1Stopbit
Option... S (not with... M) serial expenditure of the display data	-	•	•	serial expenditure of the messages RS 485 interface for status/error messages/9600 Baud, 1Startbit, 1Stopbit
Option... P a) 11 BLVT kinds of protection field fading out b) selector switch enterprise modes of operation/kinds of protection field fading out store and again call up	-	•	•	a) with more regular or frequently changed fading out. The protection field fading out in the Light grid barriers takes place by operation of a key-Schwitch b) selector switch enterprise switching between up to 5 PLSG modes of operation and/or up to 5 protection field kinds of fading out of the BLVT bLVT-Lichtgitters with selector switch

Technical Data

safety class:	Typ 4 according to EN 954-1 and EN 61496-1
Protection/enclosure:	Housing Box IP 40, Connector IP 20
Protection class:	schutzisoliert
Ambient Operation temperature:	-10 to +55 °C
Operation voltage:	24 V DC, ±20%, (SELV) The external Operation voltage must bridge a power failure of 20 ms in accordance with EN60204
outputs:	OSSD 1 und 2: fail safe PNP-outputs, max. 0,5 A, cross-currents and side-currents passages monitoring OSSD3 (Kat 3 only by operation with OSSD1 and OSSD2!):2-kanalig headed for,PNP-Output, max. 0,5 A
max. response time:	after interruption of the protctive field of the snapped-on XLVT : 3,5 ms + rsponse time XLVT after interruption of the emergency OFF circuit: 30 ms if both circuits open i.e. 63 ms if in case of malfunction only one circuit opens If function is selected: OSSD 2-breaking delay = 0,5 s!
inputs:	0V until 24 V DC +-20% / 10 mA, min. 15 V for detection of high
Externeal Muting lamp:	24V max. 0,5 A, min 50 mA
Override state:	max. 35 s
Minimum time for cycle count reset:	30 ms