Service Monitor User Manual
Danfoss Turbocor Compressors Inc. 41
ECD-00007M Rev. 1
6.9.2 Compressor Controller Alarms
Select the “CC Alarm Limits” tab to view the compressor
general alarm limits. Table 16 describes the general alarm
limits.
The limits represent the maximum temperature and/or
pressure values the compressor will tolerate before
activating an alarm.
Once an alarm is activated, the compressor motor will slow
down, and the alarm will be reported in the “Compressor
Controller” window as well as in the “Event Log” window.
An authorized user may change the temperature and/or
pressure limits to adapt to the application needs. Note
however, that the “Inverter Temperature” and the “SCR
Temperature” alarm limits cannot be altered, as changing
these limits may cause the compressor to malfunction.
Control Mode Displays the sensor that the chiller control will try to maintain the value
of. The options are:
• Leaving Chiller Water:
Controls the water or air temperature leaving the chiller.
• Entering Chiller Water:
Controls water or air temperature entering the chiller.
• Evaporating Temperature:
Controls the evaporating (saturated suction) temperature.
Chiller Control Set Point Value at which the controlled variable (selected through “Control
Mode”) shall be maintained.
Chiller Enable Status Checked: chiller able to run
Unchecked: chiller will not run
Proportional Gain Control loop - Proportional gain, 0 to 100%.
Integral Gain Control loop - Integral gain or reset, 0 to 100%.
Startup Parameters: Refer to 6.3 "Compressor Control" on page 23 for further details.
Suction Press Start Limit (% Trip) Temporary alarm and trip limit for the suction pressure. The limit is set
up as a percentage of the current suction pressure limit, e.g. if a
suction pressure trip of 270 kPa was set and the suction pressure start
limit was set to 50% the temporary suction pressure, trip limit would be
135 kPa. This temporary alarm is only active while the Suction press
start fault delay is timing down.
Suction Press Start Fault Delay Time in seconds that the temporary suction pressure alarm / fault limit
should be enabled.
Run Status Contact Close RPM Speed at which the “Run” contact on Chiller Interface module closes.
Inlet Guide Vane Start Steps Number of Inlet Guide Vane steps at compressor startup.
Power Control Loop Speed PID loop gain for control of motor power.
Table 15 EEPROM Settings - Compressor Controller Parameters (Continued)
Parameter Description
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