Setting functions
8.6 Protection and monitoring functions
SIMATIC ET 200pro FC-2 converter
136 Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
Danger to life when live parts are touched in the motor terminal box
The temperature sensor and motor holding brake connections are at DC link negative
potential. Touching these connections can result in death or severe injury.
• Keep the motor terminal box closed whenever the mains is applied to the converter.
• Before touching the connections switch off the power supply and wait until the discharge
time specified on the warning labels has elapsed.
• Insulate the cables that are not used.
Device damage by earthing the motor cable
The temperature sensor and motor holding brake connections are at DC link negative
potential. Earthing these connections will damage the device.
• Use appropriate insulation on the cables.
• Insulate cables that are not used.
• Do not earth cables that are not used.
The converter interprets a resistance
≥ 100 Ω as being an opened temperature
switch and responds according
to the setting for p0610.
The converter interprets a resistance >
1650 Ω as being an overtemperature and
responds according to the setting for p0610.
converter interprets a resistance < 20 Ω as being a short-circuit and responds
with alarm A07015. If the alarm is present for longer than 100 milliseconds, the co
n-
verter shuts down with fault F07016.
Motor overheating due to incorrectly connected KTY sensor
If a KTY sensor is connected with incorrect polarity, the motor can become damaged due to
overheating, as the converter cannot detect a motor overtemperature condition.
• Connect the KTY sensor with the correct polarity.
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