Danfoss VLT HVAC, Инструкция по эксплуатации, Страница: 80 / 156

Input
Digital/analog
Supply Voltage
Volt
Threshold
Cut-out Values
Digital 24 V < 6.6 k Ω - > 10.8 k Ω
Digital 10 V < 800 Ω - > 2.7 k Ω
Analog 10 V < 3.0 k Ω - > 3.0 k Ω
NOTE
Check that the chosen supply voltage follows the
specification of the used thermistor element.
[3] ETR warning 1
ETR Warning 1-4
, activate a warning on the display when the
motor is overloaded.
[4]
* ETR trip 1 ETR Trip 1-4 trip the frequency converter when the motor is
overloaded.
Programme a warning signal via one of the digital outputs. The
signal appears in the event of a warning and if the frequency
converter trips (thermal warning).
[5] ETR warning 2 See [3]
[6] ETR trip 2 See [4]
[7] ETR warning 3 See [3]
[8] ETR trip 3 See [4]
[9] ETR warning 4 See [3]
[10] ETR trip 4 See [4]
ETR (Electronic Thermal Relay) functions 1-4 will calculate the load when the set-up where they
were selected is active. For example ETR starts calculating when setup 3 is selected. For the North
American market: The ETR functions provide class 20 motor overload protection in accordance
with NEC.
6. How to program the adjustable frequency
drive VLT ® HVAC Drive Instruction Manual
80
MG.11.A4.22 - VLT
®
is a registered Danfoss trademark
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