Meggitt vibro-meter SpeedSys300 ODS301, User Manual

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USER MANUAL Document reference MAODS301/E
SpeedSys300 ODS301 overspeed detection system Edition 4 - May 2022
3 - 10
Installation considerations
INSTALLATION OF A SPEEDSYS300 ODS301
Table 3-5 and Table 3-6 illustrate the two different ways in which a 1oo2 voting logic structure
can be implemented using the safety relay 2 of two SpeedSys300 ODS301 modules.
Table 3-4: 1oo2 – using safety relay 1 of SpeedSys300 ODS301 modules (2)
SpeedSys300 ODS301
modules
1oo2 to customer
#1 #2
B19 ↔ 1oo2 connection to customer circuit
B20 ↔ B19
B20 ↔ 1oo2 connection to customer circuit
Table 3-5: 1oo2 – using safety relay 2 of SpeedSys300 ODS301 modules (1)
SpeedSys300 ODS301
modules
1oo2 to customer
#1 #2
B21 ↔ 1oo2 connection to customer circuit
B22 ↔ B21
B22 ↔ 1oo2 connection to customer circuit
Table 3-6: 1oo2 – using safety relay 2 of SpeedSys300 ODS301 modules (2)
SpeedSys300 ODS301
modules
1oo2 to customer
#1 #2
B23 ↔ 1oo2 connection to customer circuit
B24 ↔ B23
B24 ↔ 1oo2 connection to customer circuit