Danfoss VACON 100 FLOW Series Application Manual page 273

VACON® 100 FLOW
Application Guide
For example, if parameter Motor Nominal Current has the value 5 A, and 20% is set as the default value of this parameter, the relay
output closes and Fire Mode activates when the output current goes to 1 A.
This parameter does not affect if the fire mode is not active. In normal operation, if "Run indication" is selected for a relay output, the
result is the same as when "Run" is selected for the relay output.
11.20 Motor Preheat Function
11.20.1 (ID 1225) Motor Preheat Function
Location in the menu: P3.18.1
Use this parameter to enable or disable the Motor Preheat function. The motor preheat function keeps the drive and the motor
warm during the STOP status. In the motor preheat, the system gives the motor a DC current. The motor preheat prevents, for ex-
ample, condensation.
Selec- Selection name
tion
number
0 Not used
1 Always in Stop state
2 Controlled by digi-
tal input
3 Temperature limit
(heat sink)
4 Temperature limit
(measured motor
temperature)
11.20.2 (ID 1226) Preheat Temperature Limit
Location in the menu: P3.18.2
Use this parameter to set the temperature limit of the Motor Preheat function. The motor preheat becomes active when the heat
sink temperature or the measured motor temperature goes below this level, and when P3.18.1 is set to 3 or 4.
11.20.3 (ID 1227) Motor Preheat Current
Location in the menu: P3.18.3
Use this parameter to set the DC current of the Motor Preheat function. The DC current for the pre-heating of the motor and the
drive in stop state. Activated as in P3.18.1.
11.20.4 (ID 1044) Motor Preheat ON
Location in the menu: P3.18.4
Use this parameter to select the digital input signal that activates Motor Preheat function. This parameter is used when P3.18.1 is set
to 2. When the value for P3.18.1 is 2, it is also possible to connect time channels to this parameter.
11.20.5 (ID 1045) Preheat Motor Temperature
Location in the menu: P3.18.5
Use this parameter to select the temperature signal that is used to measure the motor temperature for motor preheat function.
This parameter is not available if there is no option board for temperature measurement.
Danfoss A/S © 2023.08
Description
The motor preheat function is disabled.
The motor preheat function is activated always when the drive is in the Stop state.
The motor preheat function is activated by a digital input signal, when the drive is in the Stop
state. It is possible to make the selection of the digital input for the activation with parameter
P3.5.1.18.
The motor preheat function is activated if the drive is in the Stop state, and the temperature of
the heat sink of the drive goes below the temperature limit that was set with parameter
P3.18.2.
The motor preheat function is activated if the drive is in the Stop state, and the measured mo-
tor temperature goes below the temperature limit that was set with parameter P3.18.2. It is
possible to set the measurement signal of the motor temperature with parameter P3.18.5.
NOTE! To use this operation mode, an option board for temperature measurement (for exam-
ple OPTBH) is needed.
N O T I C E
Parameter Descriptions
AB298035655957en-000201 / DPD01083 | 273