Safety and commissioning information for Ex areas
14.1 Motor protection functions (overload protection, thermistor protection)
SIMOCODE pro
System Manual, 05/2019, A5E40507475002A/RS-AD/004
311
14.1.3.8 Further safety guidelines
Safety information for DM-F Local and DM-F PROFIsafe fail-safe digital modules
Pay attention to the safety notes in the Manual Fail-safe Digital Modules SIMOCODE pro
(http://support.automation.siemens.com/WW/view/en/50564852
).
Using relay outputs for the protection function
For the protection function, only the relay outputs of the 3UF70 basic unit, of a monostable
digital module 3UF730, of a multifunction module 3UF76, or of a fail-safe expansion
module 3UF732/3UF733 may be used, and only if connected to the corresponding
contactor controls "QE" of the control function!
The 3UF7 is not suitable for installation in hazardous areas.
The device is only allowed to be installed in a control cabinet with the minimum degree of
protection of IP 4x.
If installed in hazardous areas, there must be no ignition hazard from the 3UF7. Appro
measures must be taken (e.g. encapsulation).
Electrical isolation required
For SIMOCODE pro devices with a 24 V DC control supply, galvanic isolation must be
ensured with a battery or a safety isolating transformer according to DIN EN 61558-2-6.
Note
The 3UF7 is not suitable for lo
ad-side operation on frequency converters.
14.1.3.9 Ambient conditions
Permissible ambient temperature range:
● Storage / transportation: -40 °C to +80 °C
● Operation: -25 °C to +60 °C; BBD: 0 °C to +60 °C
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