Fail-Safe Modules
7.8 1 F-RO DC24V/AC24..230V/5A Digital Electronic Module
ET 200S Distributed I/O System - Fail-Safe Modules
188 Installation and Operating Manual, 08/2008, A5E00103686-07
Switching Performance and Service Life of Contacts
The table below shows the switching performance and service life of contacts. You can
extend the service life beyond the value indicated in the table by installing an external
protective circuit.
Table 7- 39 Switching Performance and Service Life of Contacts
Resistive Load Voltage Current Duty cycle (typ.) NO contact
5.0 A 0.35 million
3.0 A 0.5 million
2.0 A 0.75 million
1.0 A 1.8 million
24 VDC
0.5 A 4 million
5.0 A 0.1 million
3.0 A 0.15 million
2.0 A 0.2 million
1.0 A 0.4 million
For resistive load
230 VAC
0.5 A 0.8 million
1.0 A 0.1 million 24 VDC
0.5 A 0.2 million
1.0 A 0.2 million
For inductive load to
IEC 60947-5-1 DC13/
AC15
230 VAC
0.5 A 0.35 million
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