Specifications

555039 42 53 54
R
<3.0 k Ω
>3.0 k Ω
+10V
130BA153.11
PTC / Thermistor
OFF
ON
Illustration 2.38 Analog Input and 10 V Power Supply
Input
Digital/analog
Supply Voltage
V
Cut-out Values
Threshold
Cut-out Values
Digital 24
< 6.6 kΩ - > 10.8 kΩ
Digital 10
< 800 Ω - > 2.7 kΩ
Analogue 10
< 3.0 kΩ - > 3.0 kΩ
Table 2.20 Threshold Cut-out Values by Input and Voltage
NOTICE
Check that the chosen supply voltage follows the
specification of the thermistor element used.
Summary
With the torque limit feature the motor is protected from
overload independent of the speed. With the ETR, the
motor is protected from overheating and there is no need
for any further motor protection. That means when the
motor is heated up, the ETR timer controls for how
longthe motor can run at the high temperature before it is
stopped to prevent overheating. If the motor is overloaded
without reaching the temperature where the ETR shuts of
the motor, the torque limit is protecting the motor and
application from being overloaded.
ETR is activated in F-10 Electronic Overload and controlled
in F-40 Torque Limiter (Driving). Set the time before the
torque limit warning trips the frequency converter in
SP-25 Trip Delay at Torque Limit.
Introduction VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 49
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