Danfoss iC2, Инструкция по применению

Страница: 137 / 292

Application Guide | iC2-Micro Frequency Converters
Parameter
number:
440
Unit:
Hz
Data type:
uint16
Access type:
Read/Write
P 4.6.3 Warning Current High
Enter the I-high value. When the motor current exceeds this limit, a bit in the drives status word is set. This value can also be
programmed to produce a signal on the digital output or the relay output.
Default value:
Size Related
Parameter type:
Range (Size Related)
Parameter
number:
451
Unit:
A
Data type:
uint32
Access type:
Read/Write
P 4.6.4 Warning Current Low
Enter the I-low value. When the motor current falls below this limit, a bit in the drives status word is set. This value can also be
programmed to produce a signal on the digital output or the relay output.
Default value:
0.00
Parameter type:
Range (Size Related)
Parameter
number:
450
Unit:
A
Data type:
uint32
Access type:
Read/Write
P 4.6.7 Motor Thermal Protection
Motor thermal protection can be implemented via a PTC sensor in the motor windings connected to 1 of the analog or digital inputs ( P
4.6.8 Thermistor Source ). Or via calculation (ETR = Electronic Thermal Relay) of the thermal load, based on the actual load and time. The
calculated thermal load is compared with the rated motor current I
M,N
, and the rated motor frequency f
M,N
. It is possible to activate an
overheat warning or fault.
Default value:
0 [No Protection]
Parameter type:
Selection
Parameter
number:
190
Unit:
–
Data type:
enum
Access type:
Read/Write
Selection number Selection name Selection description
0 No Protection Continuously overloaded motor, when no warning or trip of the
frequency converter is required.
1 Thermistor Warning Activates a warning when the connected thermistor in the motor
reacts to a motor overtemperature.
2 Thermistor Trip Stops (trips) the frequency converter when the connected
thermistor in the motor reacts to a motor overtemperature. The
thermistor cut out value must be >3 kΩ. Integrate a thermistor
(PTC sensor) in the motor for winding protection.
Danfoss A/S © 2024.03 AB413939445838en-000301 / 130R1254 |
137