Sick Safety relay: RLY3-EMSS300

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Applications	Evaluation unit
Compatible sensor types	Safety sensors with potential-free outputs

Safety integrity level	SIL 3 (IEC 61508)
Category	Category 4 (ISO 13849-1)
Performance level	PL e (ISO 13849-1)
PFH_D (mean probability of a dangerous failure per hour)	1.0 x 10^-9
T_M (mission time)	20 years (ISO 13849-1)
Stop category	0 (IEC 60204-1)

Sensor monitoring	Discrepancy monitoring Cross-circuit detection
Restart interlock	✔
Reset	Automatic Manual
External device monitoring (EDM)	✔

Connection type	Front connector with spring terminals
Inputs	2 safety inputs 1 input for reset pushbutton or external device monitoring (EDM)
Outputs	3 enabling current paths (safe) 2 application diagnostic outputs (not safe) 3 test pulse outputs (not safe)
Display elements	LEDs
Configuration method	Hard wired

Voltage supply

PELV or SELV

Supply voltage V_S

24 V DC (16.8 V ... 30 V)

Residual ripple

≤ 2.4 V

Power consumption

≤ 2.5 W (DC)

Safety inputs
Number	2
Input voltage HIGH	24 V DC (11 V ... 30 V)
Input voltage LOW	0 V DC (–3 V ... 5 V)
Input current	4 mA ... 6 mA
Activation time tolerance between the two start buttons	≤ 3 s

Reset pushbutton or external device monitoring (EDM) input
Number	1
Input voltage HIGH	24 V DC (11 V ... 30 V)
Input voltage LOW	0 V DC (–3 V ... 5 V)
Input current	4 mA ... 6 mA

Enabling current paths
Response time (opening of enabling current paths)	12 ms
Number	3
Type of output	N/O contacts, positively guided
Contact material	Silver alloy, gold flashed
Switching voltage	10 V AC ... 230 V AC
	10 V DC ... 230 V DC
Switching current	10 mA ... 6 A
Total current	12 A
Mechanical life	1 x 10⁷ switching cycles
Overvoltage category	III (EN 60664-1)
Rated impulse withstand voltage U_imp	6 kV (EN 60664-1)

Application diagnostic outputs
Number	2
Type of output	Push-pull semiconductor output, short-circuit protected
Output voltage HIGH	≥ V_s – 3 V
Output voltage LOW	≤ 3 V
Input current (NPN)	≤ 15 mA
Output current (PNP)	≤ 120 mA

Test pulse outputs
Number	3
Type of output	PNP semiconductors, short-circuit protected
Output voltage	≥ V_s – 3 V
Test pulse width	2 ms
Test pulse interval	40 ms

Dimensions (W x H x D)	18 mm x 124.6 mm x 85.5 mm
Weight	150 g

Enclosure rating	IP20 (IEC 60529)
Ambient operating temperature	–25 °C ... +55 °C
Storage temperature	–25 °C ... +70 °C
Air humidity	≤ 95 %, Non-condensing
Interference emission	According to IEC 61000-6-4
Interference resistance	According to IEC 61326-3-1 According to IEC 61000-6-2 According to IEC 60947-5-1

Dimensional drawing EMSS3, LOOP1, MULT1, OSSD3

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