Compressor; Fan - Danfoss Optyma Plus User Manual

Compressor

The start/stop of the controller can be defined in several ways.
Internal only: Here, only the internal main switch in r12 is used.
External: Here, input DI1 is used as a thermostat switch. With this setting, input DI2
can be defined as an 'external safety' mechanism that can stop the compressor.
Running times
To prevent irregular operation, values can be set for the time the compressor is to run
once it has been started. And for how long it at least has to be stopped.
Min. ON-time (in seconds)
Min. OFF-time (in seconds)
Minimum time between cut-in of relay (in minutes)
Pump down Limit
Pressure value at which the compressor stops
Compressor min. speed
Here the minimum allowable speed for the compressor is set.
Compressor start speed
The compressor will not start before the required speed can be achieved
Compressor max. speed
Upper limit for compressor speed
Compressor max. speed during night operation
Upper limit for compressor speed during night operation. During night operation, the
c48 value is reduced to the percentage value set here
Definition of compressor control
0: No external switch for start/stop
1: Input DI1 used to start and stop the compressor
2: The compressor will be speed-controlled with a 0-10 V signal on AO2
Delay time for high discharge gas temperature (in minutes)
When sensor Td records a temperature higher than the limit value entered in r84, the
timer will start. When the delay time expires, the compressor will be stopped if the
temperature is still too high. An alarm will also be issued.
Max. pressure (Max. condensing pressure)
The maximum permitted condensing pressure is set here. If the pressure increases,
the compressor will be stopped.
Difference for max. pressure (Condensing pressure)
Difference for re-start of compressor if it is cut out due to PcMax.
(All timers must expire before re-start is permitted)
Minimum suction pressure
Enter the lowest permitted suction pressure here. The compressor is stopped if the
pressure drops below the minimum value.
Suction pressure difference
Difference for re-start of compressor if it is cut out due to PsLP.
(All timers must expire before re-start is permitted)
Amplification factor Kp for compressor regulation
If the Kp value is lowered, the regulation will be slower
Integration time Tn for compressor regulation
If the Tn value is increased, regulation will run more smoothly
Liquid Injection Offset
The liquid injection relay is activated when the temperature is over "r84" minus "c88"
(but only if the compressor is running).
Liquid Injection hysterese
The liquid injection relay is then deactivated when the temperature has dropped to
"r84" minus "c88" minus "c89".
Compressor stop delay after Liquid injection
Compressor ON-time after relay "Aux relay" is went OFF
Desired compressor speed in connection with pressure transmitter faults.
Speed during emergency operation.
Min On time during Low Ambient Temperature and Low Pressure
Measured Tc for which the Comp min speed is raised to StartSpeed
The LED on the controller's front will show whether refrigeration is in progress.

Fan

Amplification factor Kp
If the KP value is lowered, the fan speed will change.
Optyma Plus
TM
User Guide RS8GD602 © Danfoss 2015-10
Compressor control
c01 Min. On time
c02 Min. Off time
c07 Restart time
c33 PumpDownLim
c46 CmpMinSpeed
c47 CmpStrSpeed
c48 CmpMaxSpeed
c69 CmpMax % Ngt
c71 Comp mode
c72 Disch. Del
c73 PcMax
c74 Pc Diff
c75 PsLP
c76 PsDiff
c82 Cmp Kp
c83 Comp Tn sec
c88 LI Offset
c89 LI Hyst
c90 LI Delay
c93 CmpEmrgSpeed
c94 c94 LpMinOnTime
c95 c95 TcSpeedLim
Fan control
n04 Kp factor
7