SSZ SSZ-BAT, System Manual, Page: 14 / 66

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Testing basics EN ISO 13849-1/2; EN ISO 13856-1-3
Nominal supply voltage SSZ-RZ4 / SSZ-RZ4B 24V AC 50 Hz or 24 VDC
Allowable voltage 10.6 VDC - 36 VDC or 8 VAC - 24 VAC
Max. current consumption 290mA@12VDC; 135mA@24VDC;
250mA@24VAC
Rates current 100mA@24VDC
Power consumption P1 2,4 W
Internal fuse 1500 mA
Power circuit required fuse 2A
Working temperature range 0°C - +50° C
DIN Rail mount Yes
Max. resistance of the sensor element channel 1 and 2 250 kOhm
Max. resistance difference between the channels 1 and 2 20%
Max. response time <20ms
Performance Level acc. to EN ISO 13849-1 PL=d (Pl e)*
The service life 20 years
MTTFd in connection with SSZ-pressure
equipment
74,1
DC (diagnostic coverage) 90%
CCF (common cause failure) 75
PFHd acc. to IEC/EN 62061 in connection
with the SSZ-Pressure equipment
6.8 E-8
The category acc. to IEC/EN 62061 SIL 2
Safety category acc. to
EN ISO 13849-1:2016-02
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SSZ-RZ4/SSZ-RZ4B and Sensor SSZ-SG 2, SSZ-SG 3
Controllers