CIAT XtraConnect 2 User Manual

EN - 31
6.14 Minimum desuperheat discharge fault
● Operation:
- This function monitors the compressor desuperheat temperature (prevents slugging).
- The minimum superheat temperature is calculated by the following equation: (discharge temperature – condensing temperature).
- The minimum superheating discharge threshold is stored in parameter P56.
- The fault is taken into account 15 minutes after the compressor is turned on. The compressor is stopped if desuperheat is < P56 and
superheat is < 4 K for 1 minute.
● If a fault occurs:
- Compressor turned off.
- Circuit fault output on.
- Circuit X discharge minimum superheat fault relay on optional board in On position.
- Circuit fault LED on console lit steadily.
Display:
● Resetting:
- Press RESET to acknowledge the fault.
6.15 Electronic expansion valve fault
● Operation:
- This input is used only if the optional electronic expansion valve is installed (P42 = Yes).
- The circuit is turned off when the input closes.
► If < 3 shutdowns occur in 24 hours
● If a fault occurs:
- Compressor turned off.
- Circuit fault output off.
- Fault stored in fault memory.
- Circuit fault LED on console flashes.
- The number of faults over a 24 hour period is managed.
Display:
► If ≥ 3 shutdowns occur in 24 hours
● If a fault occurs:
- Compressor turned off.
- Circuit fault output on.
- Fault stored in fault memory
- Circuit fault LED on console lit steadily.
- The number of faults over a 24 hour period is managed.
Display:
● Resetting:
- If the number of faults in 24 hours < 3, the fault is automatically acknowledged after 120 seconds and the fault input opens.
- If the number of faults in 24 hours • 3, the fault is acknowledged via the RESET button on the console and the fault input opens.
6.16 Lubrication fault
● Operation:
- This function checks for proper compressor lubrication by monitoring the oil pressure (HP-LP) over two separate stages.
• Fault after 1 minute
- The first check for this fault is taken into account 1 minute after the
compressor starts if HP-LP < 1 bar for 5 seconds (fault not
managed when compressor off).
● If the first fault occurs at start-up :
- Compressor turned off.
- 16-minute time delay
- Circuit fault output off.
- Fault stored in fault memory
- Circuit X lubrication fault relay on optional board in Off position.
- Circuit fault LED on console off.
- Compressor restarted in short-cycle protection mode.
● If another fault occurs after start-up:
- Compressor turned off.
- Circuit fault output on.
- Fault stored in fault memory.
- Circuit X lubrication fault relay on optional board in On position.
- Circuit fault LED on console lit steadily.
Display:
● Resetting:
- The first fault is automatically acknowledged after 16 minutes.
- Press RESET to acknowledge the second fault.
CIRCUIT X FAULT
MIN. DESUPERHEAT
EXPANS.VALVE FAULT
X STOP(S) IN 24H
CIRCUIT X STOP
EXPANS.VALVE FAULT
CIRCUIT X STOP
LUBRICATION FAULT

CIAT XtraConnect 2 Specifications

General

Brand	CIAT
Model	XtraConnect 2
Category	Control Unit
Language	English