User Documentation

Assumptions and restrictions for use of the product
1482880000/01/11.2017 9
5. Assumptions and restrictions for use of the product
5.1 Basic safety specifications
Operational temperature range: -20...+60 °C
Storage temperature range: -20...+85 °C
Power supply type: Double or reinforced
Supply voltage: 19.2...31.2 V DC
Mounting area: Zone 2 & Class I, Division 2 or safe area
Mounting environment: Pollution degree 2 or better,
Overvoltage category II
5.2 Associated equipment
5.2.1 Safety output
The safety output shall be connected to the equipment with a minimum load of 10 KΩ.
5.2.2 Safety input
The safety input signal frequency shall not be higher than 20 Hz, and the pulse length shall not be shorter
than 25 ms.
5.3 Failure rates
The basic failure rates from the Siemens standard SN 29500 are used as the failure rate database. Failure
rates are constant; wear-out mechanisms are not included. External power supply failure rates are also not
included.
5.4 Safe parameterization
The user is responsible for verifying the correctness of the configuration parameters (refer to chapter 16.5
"Safety-related configuration user responsibility" on page 27). Manual override may not be used for safety
applications.
5.5 Installation in hazardous areas
The IECEx installation drawing, ATEX installation drawing and FM installation drawing shall be followed, if
the products are installed in or connected to hazardous areas.