Safety control unit
SC4-8 24VAC/DC

Evaluation device for safety thru-beam sensors SLA, for safety light grids SLP and for 2 channel safety devices (emergency off)
Self-monitoring (type 4 according to IEC/EN 61496-1)
Muting module for safety light curtain SLC
Consideration of special customer requirements
Function defined on programmable memory module, in the factory
Start/Restart disable
Relay monitor
Sequential and parallel muting in various operating modes
Double muting
Emergency muting for the correction of the material jam
7-segment diagnostic display
Safety outputs OSSD, external status displays OSSD

Product Description
Safety control unit
General specifications
Safety type according to IEC/EN 61496		4
Marking		CE
Operating mode		Start/restart disable, relay monitor, muting operating modes
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 3
Performance level (PL)		PL e
Category		Cat. 4
Mission Time (T_M)		20 a
PFH_d		1.97 E-9
Indicators/operating means
Diagnostics display		7-segment display
Function display		LED red: OSSD off LED green: OSSD on LED yellow 8x: indicator lamp channel 1 ... 8 LED yellow: Muting status
Pre-fault indication		LED yellow flashing: Indicator lamp channel 1 ... 8
Electrical specifications
Operating voltage		24 V AC; ± 10 % ; 24 V DC; ± 15 %
Input
Function input		Relay monitor, startup enable, emergency muting, max. 4 muting sensors, input for 2-channel protective device
Output
Safety output		2 relay outputs, force guided alternating contact
Signal output		Relay contacts for the switching state message of the OSSDs, start readiness, muting
Mechanical specifications
Protection degree		IP20
Connection		Connection terminals, max. conductor cross-sectional area 1.5 mm²

Instructions, Short instructions, Safety information	Language	File Type	File Size
Manual Control Unit SC4-8	ENG	PDF	1050 KB
Handbuch Auswertegerät SC4-8	GER	PDF	1126 KB
Manuals
Handbuchergänzungen (EN ISO 13849)/Manual update (EN ISO 13849)	ALL	PDF	211 KB

Certificates	Certificate No.	File Type	File Size
US CA UL General Purpose	E87056	LINK	---
EU TÜV SÜD	Z10110520068032	PDF	308 KB
EU Pepperl+Fuchs Declaration of Conformity	PF 12 CERT 2178	PDF	362 KB
EU Pepperl+Fuchs Declaration of Conformity	PF 12 CERT 2179	PDF	330 KB

Safety control unitSC4-8 24VAC/DC