Alarm Messaging - Digital Scroll Controller (Zxd) - Emerson ZX Platform Condensing Unit Product Manual

Alarm Messaging - Digital Scroll Controller (ZXD)

Alarm
Set Points
Mode
DLT >= dtL after
dtL
dLd time delay
Low pressure is lower
than ELP
E01L
(Level 3 Parameter)
Mechanical LP
E0L
switch opens
LP < LAL
C-LA
LP >= HAL
C-HA
Condensing Temperature
E0H
High
HP >= HAF
F-HA
Suction Transducer
P1
failure or out of range
Condenser Mid Coil
Sensor failure or out
P2
of range
Discharge Temp Sensor
P3
failure or out of range
DLT: Discharge line temperature
LP : Low pressure
HP : High pressure
23
Controller Actions
- Compressors are turned off
- Compressors are turned off
- Fans are unchanged
- Compressors are turned off
- Fans are unchanged
- Signaling only
- Signaling only
- Compressors are turned off -
Fans are turned on
- HFC = yes, compressor are
turned off
- Compressors are activated
according to SPr or PoPr
- Fans are activated according
to FPr
-The functions related to No.3
probe are disabled
Reset
Auto reset when DLT < dtL-dLH
Auto reset when LP >= ELP(Level 3)
Auto reset when Number of
activations < PEn in PEi time
Manual reset when Number of
activations >= PEn in PEi time
- Press key for 3 sec or
- Turn off and on the unit
Auto reset when LP = LAL + delta (0.3bar)
Auto reset when LP = HAL -delta (0.3bar)
Auto reset when Number of activations
< PEn in PEi time
Manual reset when Number of activations
>= PEn in PEi time
- Press key for 3 sec or - Turn off
and on the unit
Auto reset when HAF + delta (0.3bar)
Auto reset when probe is normal
Auto reset when probe is normal
Auto reset when probe is normal
Remarks
DLT
LP
LP
LP
LP
LP
Cond Mid Temp.
Cond Mid
Cond Mid Temp.
LP
Cond Mid Temp.
DLT