Danfoss Optyma Plus Application Manuallines page 35

Application Guidelines
Function
Read-out of operating time of heating element in crankcase.
(Value must be multiplied by 1,000). The value can be adjusted
Read-out of number of HP alarms. The value can be adjusted
Read-out of number of LP alarms. The value can be adjusted
Read-out of number of Td alarms. The value can be adjusted
Oil return management. Compressor speed for the counter
starting point
Oil return management. Limit value for counter
Oil return management. Boost-speed
Oil return management. Boost-time
Service
Readout pressure on Pc
Readout temperature Taux
Status on DI1 input. 1=on=closed
Status on night operation (on or off) 1=on=night operation
Readout superheat
Readout temperature at S6 sensor
Status on DI2 input. 1=on=closed
Readout the compressor capacity in %
Status on relay to compressor. 1=on=closed
Status on relay to fan. 1=on=closed
Status on relay to alarm. 1=on=closed
Status on relay "Aux". 1=on=closed
Status on relay to heating element in crank case. 1=on=closed
Status on high voltage input DI3. 1=on=230 V
Readout condensing pressure in temperature
Readout pressure Ps
Readout suction pressure in temperature
Readout ambient temperature Tamb
Readout discharge temperature Td
Readout suction gas temperature Ts
Readout the voltage on the output AO1
Readout the voltage on the output AO2
Condensing unit controller
NOTICE
Following controller parameters are
modified from factory setting by condensing unit
production.
All Other parameters in «unit controller setting»
are same as "Default controller setting"
- r12: 1 (main switch = ON).
- c71: 2 (compressor type = variable speed
compressor).
- c73: 25.8 (max. condensing pressure =
25.8bar(g)).
- c75: 2.0 (min. suction pressure = 2.0 bar(g)).
- o30: 41 (refrigerant: 19=R404A, 21=R407A,
37=R407F, 40=R448A, 41=R449A).
Code Min.value
P50 -
P51 -
P52 -
P53 -
P77 30 rps
P78 5 min.
P79 40 rps
P80 10 s
u01 bar
u03 °C
u10
u13
u21 K
u36 °C
u37
u52 %
** u58
** u59
** u62
** u63
** u71
u87
U22 °C
U23 bar
U24 °C
U25 °C
U26 °C
U27 °C
U44 V
U56 V
- o61: 55, 56 or 57 (compressor size: 55=VLZ028,
Following parameter should be modified by
installer if controller is used as pump down device.
- c33: 2.3 (pump down limit, should be min.
Modification of controller parameters shall be
done by qualified persons only.
In case of any problems with controller it is
possible to connect unit bypassing it: see details in
chapter 4.3.1 of this guideline.
Default
Unit controller
Max.value controller
settings
- 0 h
- 0
- 0
- 0
70 rps 40 rps
720 min. 20 min.
100 rps 50 rps
600 s 60 s
56=VLZ035, 57=VLZ044).
0.3bar higher than c75 to avoid
unwanted alarms).
FRCC.PC.044.A6.02
settings
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