Electrical connection
8.3 System integration
1FW68 radial segment motors
Configuration Manual, 04/2017, 6SN1197-0AE02-0BP1
147
Avoiding false circuit breaker tripping
At the following link you can find information in the Internet on the topic of "Influence of high-
frequency currents on thermal overload trips of circuit breakers (3RV, 3VU) and overload
relays (3RU, 3UA)" and "Additional effects that can result in false trips".
FAQ entry ID: 24153083
http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&objid=24153083&no
deid0=20358027&caller=view&lang=de&extranet=standard&viewreg=WW&u=NDAwMDAxN
8.3.8
Signal connection
No direct connection of the temperature monitoring circuits
WARNING
Risk of electric shock when incorrectly connecting the temperature monitoring circuit
In the case of a fault, circuits Temp-S and Temp-F do not provide safe electrical separation
with respect to the power components.
•
Use the TM120 to connect the Temp-S and Temp-F temperature monitoring circuits.
You therefore comply with the directives for safe electrical separation according to
DIN EN 61800-5-1 (previously safe electrical separation according to DIN EN 50178).
Correctly connecting temperature sensors
NOTICE
Motor destroyed as a result of overtemperature
The motor can be destroyed as a result of overtemperature if you do not correctly connect
the temperature sensors.
•
When connecting temperature sensor cables with open conductor ends, pay attention to
the correct assignment of conductor colors.
Note
Observe the polarity
Carefully note the polarity when connecting the KTY.
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Страница 114: ...Configuring 5 2 Mounting 1FW68 radial segment motors 114 Configuration Manual 04 2017 6SN1197 0AE02 0BP1 ...
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