Danfoss VLT DriveMotor FCP 106, Руководство по конструкции

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Activate ETR in parameter 1-90 Motor Thermal Protection .
ETR is controlled in parameter 4-18 Current Limit Mode .
3.3.9.2 Thermistor (FCP 106 only)
The thermistor is positioned between motor windings. The
connection for the thermistor is placed in the motor plug
at terminal positions T1 and T2. For terminal positions and
wiring details, refer to the section
Motor Connection in VLT
®
DriveMotor FCP 106 and FCM 106 Operating Instructions.
To monitor the thermistor, set parameter 1-90 Motor
Thermal Protection to [1] Thermistor Warning or [2]
Thermistor Trip .
1330
550
250
-20 °C
175HA183.11
4000
3000
R
(Ω)

nominal

nominal -5 °C

nominal +5 °C

[°C]
Illustration 3.6 Typical Thermistor Behaviour
When the motor temperature increases the thermistor
value above 2.9 kΩ, the frequency converter trips. When
the thermistor value decreases below 0.8 kΩ, the frequency
converter restarts.
195NA439.10
R
OFF
ON
<800 Ω >2.9 kΩ
Illustration 3.7 Frequency Converter Operation with Thermistor
NOTICE
Select the thermistor according to the specification in
Illustration 3.6 and Illustration 3.7 .
NOTICE
If the thermistor is not galvanically isolated,
interchanging the thermistor wires with the motor wires
may permanently damage the frequency converter.
A mechanical thermal switch (Klixon type) can be used
instead of a thermistor.
System Integration
VLT
®
DriveMotor FCP 106/FCM 106
38 Danfoss A/S © 06/2016 All rights reserved. MG03M202
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