User Documentation

Assumptions and restrictions for use of the product
1485600000/01/11.2017 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
Output pulse length, min.: 40 µs
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 Relay output
The relay output shall be only connected to equipment which has a current limiting function of 2 A.
5.2.2 Field device
The field device must provide a minimum pulse length of 100 µs.
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.