Monitor Program Data and Controls
44
Danfoss Turbocor Compressors Inc.
ECD-00007M Rev. 1
6.9.4 Compressor Stepper Motor
Settings
Select the “Stepper Motor Controls” tab to view and change
the compressor’s stepper motor settings. Specifically, it
allows the user to view the maximum motor steps and the
initial motor steps at compressor startup. For the electronic
expansion valves, the user may adjust the settings to meet
the application needs.
Table 17 EEPROM Settings - Compressor Controller Fault Limit Parameters
Parameter
Description
Discharge Pressure
The actual discharge gauge pressure at the compressor flange as
measured by the discharge pressure transducer.
Inverter Temperature
Inverter temperature as measured by thermistor mounted under the
IGBT Inverter.
Discharge Temperature
The actual discharge temperature at the compressor flange as
measured by the discharge temperature/pressure transducer.
Suction Pressure
The actual suction gauge pressure at the compressor flange as
measured by the suction pressure transducer.
Cavity Temperature
Temperature of the superheated gas moving past the shaft.
Leaving Temperature
Leaving water temperature as measured from the 10K thermistor
connected to the terminals marked “LEAVE” on the Chiller Interface
module.
Total Compression Ratio
Ratio of the absolute discharge pressure and the absolute suction
pressure.
Current Draw - Amps
3-phase mains input current.
SCR Temperature
Temperature of the SCR heat sink plate.
Anti Start Temperature
Temperature limit at which the compressor will start up. If the inverter
temperature, cavity temperature, or SCR temperature exceeds the
anti-start temperature, then the compressor will not start up until the
temperature has been reduced.