Emerson unidrive m200 - Analog Input 1 Current Loop Loss;Analog Input 1 Offset; Analog Input 2 Offset;Inverter Temperature; Percentage of D.C. Link Thermal Trip Level; Percentage of Drive Thermal Trip Level

Parameter 07.028 Analog Input 1 Current Loop Loss
Short description Displays when analog input 1 falls below 3mA
Mode Open‑loop
Minimum 0 Maximum 1
Default Units
Type 1 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT
See AnalogInput1PresetonCurrentLoss (07.026).
Parameter 07.030 Analog Input 1 Offset
Short description Defines the offset of analog input 1
Mode Open‑loop
Minimum -100.00 Maximum 100.00
Default 0.00 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 2
Coding RW
See AnalogInput1Scaling (07.008).
Parameter 07.031 Analog Input 2 Offset
Short description Defines the offset of analog input 2
Mode Open‑loop
Minimum -100.00 Maximum 100.00
Default 0.00 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 2
Coding RW
See AnalogInput2Scaling (07.012).
Parameter 07.034 Inverter Temperature
Short description Displays the estimated junction temperature of the hottest power device within the drive inverter
Mode Open‑loop
Minimum -250 Maximum 250
Default Units °C
Type 16 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT
InverterTemperature (07.034) shows the estimated junction temperature of the hottest power device within the drive inverter. If this temperature exceeds the switch down threshold defined for the
power stage the switching frequency is reduced provided this feature has not been disabled (i.e. Auto-switchingFrequencyChangeDisable (05.035) = 0) or the minimum switching frequency has
not been reached. The switching frequency can be reduced from 12kHz to 6kHz to 3kHz, or from 16kHz to 8kHz to 4kHz to 2kHz. If the switching frequency has been reduced the drive will
attempt to restore it to the required level when the InverterTemperature (07.034) reduces.
Parameter 07.035 Percentage Of d.c. Link Thermal Trip Level
Short description
Displays the percentage of the maximum allowed temperature as estimated by the thermal model of the
d.c. link components
Mode Open‑loop
Minimum 0 Maximum 100
Default Units %
Type 8 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT
PercentageOfd.c.LinkThermalTripLevel (07.035) gives the percentage of the maximum allowed temperature as estimated by the thermal model of the d.c. link components.
Parameter 07.036 Percentage Of Drive Thermal Trip Level
Short description
Displays the percentage of the thermal trip level of the temperature monitoring point or thermal model in
the drive that is highest
Mode Open‑loop
Minimum 0 Maximum 100
Default Units %
Type 8 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT
PercentageOfDriveThermalTripLevel (07.036) gives the percentage of the thermal trip level of the temperature monitoring point or thermal model in the drive that is highest. This includes all
thermal monitoring points StackTemperature (07.004), AuxiliaryTemperature (07.005), InverterTemperature (07.034) and PercentageOfd.c.LinkThermalTripLevel (07.035).
PercentageOfd.c.LinkThermalTripLevel (07.035) is used directly to give PercentageOfDriveThermalTripLevel (07.036), but for all other monitored values which are temperatures this is
given by
Percentage of thermal trip level = (Measured Temperature - 40°C) / (Trip temperature - 40°C) x 100%
The location of the measurement or the thermal model that is related to this temperature is given in TemperatureNearestToTripLevel (07.037). If PercentageOfDriveThermalTripLevel
(07.036) exceeds 90% DriveOver-temperatureAlarm (10.018) is set to one. If PercentageOfDriveThermalTripLevel (07.036) reaches 100% one of the trips given in the table below is initiated.
The trip can be reset when the percentage of thermal trip level falls below 95%.
Temperature Trip
InverterTemperature (07.034) OHtInverter
StackTemperature (07.004) andAuxiliaryTemperature (07.005) OHtPower
PercentageOfd.c.LinkThermalTripLevel (07.035) OHtdcbus
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
105