Controller for Condensing unit Optyma PlusTM Manual

Controller for Condensing unit Optyma PlusTM Manual
Controller for Condensing unit
Optyma PlusTM
Manual
Introduction
Application
Condensing unit control
Advantages
• Condensing pressure control in relation to outside temperature
• Fan variable speed regulation
• Compressor on/off control
• Heating element control in crankcase
• Day/night controller operation
• Built-in clock function with power reserve
• Can be expanded with data communication
• Monitoring discharge temperature td
Principle
The controller receives a signal for demanded cooling, and it then
starts the compressor.
Condenser pressure regulation is performed again following a
signal from the ambient temperature sensor and the set reference.
The controller will then control the fan, which allows the condensing temperature to be maintained at the desired value.
The controller can also control the heating element in the crankcase so that oil is kept separate from the refrigerant.
For excess discharge temperature, the liquid injection will be activated in the suction line.
Functions
• Control of condensing temperature
• Control of fan speed
• On/off control of the compressor
• Control of heating element in crankcase
• Liquid injection in suction line
• Raising the condenser pressure regulation reference during night
operation
• Both internal and external start/stop cooling
• Safety cut-out activated via signal from automatic safety control
Regulation reference for condensing temperature
The controller controls the condensing temperature in relation
to the ambient temperature. A set point is entered for how much
higher the reference must be. The reference can be raised at night.
Reference
Day/Night
The controller has an internal clock function which changes
between daytime and night operation.
During night operation, the reference is raised by the 'Night offset'
value.
This day/night signal can also be activated in two other ways:
• Via an on/off input signal - DI2
• Via data communication.
2
Night offset
Set Point
Manual RS8GD502 © Danfoss 11-2013
Tamb
Day
Night
Day
Optyma Plus TM
Fan operation
The controller will control the fan so that the condensing
temperature is maintained at the desired value above the outdoor
temperature.
The user may select from different ways to control the fan:
• Internal speed regulation
Here the fan is speed-controlled via terminal 5-6.
At a need of 95% and above, the relay on terminal 15-16 are
activated, while 5-6 are deactivated.
This control also uses the signal on the DI3 input. Here the sine
sequence of the voltage is detected so that a zero-crossing can
be connected.
• External speed regulation
For larger fan motors with insufficient internal outlet, an external
speed regulation can be connected to terminal 28-29. A 0-10 V
signal indicating the desired speed is then sent from this point.
The relay on terminal 15-16 will be active when the fan is in
operation.
In menu 'F17' the user can define which of the two controls to use.
Fan speed at start
When the fan is re-started after an idle period, it will be started
at a speed that is set in the 'Jog Speed' function. This speed is
maintained for 10 seconds, after which the speed changes to the
regulation need.
Fan speed at low loads
At low loads between 10 and 30%, the speed will remain at that
which is set in the 'FanMinSpeed' function.
Fan speed at low ambient temperatures
To avoid frequent start/stops in low ambient temperatures in
which the fan's capacity is high, the internal amplification factor is
lowered. This provides a smoother regulation.
The 'Jog speed' is also lowered in the area from 10°C and down to
-20°C.
At temperatures below -20°C the 'Jog Low' value can be used.
Speed
Jog
Min.
Required
capacity
Speed
Jog
Jog low
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
3
Compressor control
The compressor is controlled by a signal at the DI1 input.
The compressor will start once the input is connected.
Three restrictions have been implemented to avoid frequent start/
stops:
- One for minimum ON time
- One for minimum OFF time
- One for how much time must elapse between two starts.
These three restrictions have the highest priority during
regulation, and the other functions will wait until they are
complete before regulation can continue. When the compressor is
'locked' by a restriction, this can be seen in a status notification.
If the DI3 input is used as a safety stop for the compressor, an
insufficient input signal will immediately stop the compressor.
Maximum discharge gas temperature
The temperature is recorded by sensor Td.
If a higher temperature is detected than the set max. temperature,
the fan's speed will be set to 100%. If this does not cause the
temperature to drop, and if the temperature remains high
throughout the set delay time, the compressor will be stopped.
The compressor will only be re-started once the temperature
is 10 K lower than the set value. The above mentioned re-start
restrictions must also be complete before the compressor can
start once again.
If the delay time is set to '0', the function will not stop the
compressor.
Liquid injection in suction line
The controller can activate the liquid injection in the suction
line if the temperature is approaching the maximum allowable
discharge temperature.
High pressure monitoring
During regulation, the internal high pressure monitoring function
is able to detect an over the limit condensing pressure so that the
regulation can continue.
However, if the C73 setting is exceeded, the compressor will be
stopped.
If, on the other hand, the signal comes from the interrupted safety
circuit connected to DI3, the compressor will immediately be
stopped and the fan will be set to 100%.
When the signal is once again 'OK' at the DI3 input, the regulation
will resume.
Low pressure monitoring
During regulation, the internal low pressure monitoring function
will cut out the compressor upon detecting a suction pressure that
falls below the lower limit, but only once the minimum ON time is
exceeded. An alarm will be issued.
Pump down limit
The compressor will be stopped if a suction pressure that falls
below the set value is registered, but only once the minimum ON
time is exceeded.
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Optyma Plus TM
Heating element in the crankcase
The controller has a thermostat function which can control the
heating element for the crankcase. Oil can thus be kept separate
from the refrigerant. The function is active when the compressor
has stopped.
The function is based on the ambient temperature and suction
gas temperature. When the two temperatures are equal ± a
temperature difference, power will be supplied to the heating
element.
The 'CCH off diff' setting indicates when power will no longer be
supplied to the heating element.
The 'CCH on diff' indicates when 100% power will be sent to the
heating element.
Between the two settings the controller calculates the wattage
and connects to the heating element in a pulse/pause cycle which
corresponds to the desired wattage.
The Taux sensor can be used to record the temperature in the
crankcase if desired.
When the Taux sensor records a temperature lower than Ts+10 K,
the heating element will be set to 100%, but only if the ambient
temperature is below 0°C.
Digital inputs
There are two digital inputs DI1 and DI2 with contact function and
one digital input DI3 with high voltage signal.
They can be used for the following functions:
DI1: Starts and stops compressor
DI2: Here the user can select from various functions
Status notification from an external safety function
External main switch
Night setback signal
Separate alarm function
Monitoring of input signal
DI3: Safety signal from low/high-pressure switch
DI3 is also used to record the phase's zero-crossing, which is
used in the fan control.
Data communication
If the user prefers using data communication so that the controller
can be tracked from an ADAP-KOOL® system unit, a optional
module must be mounted in the controller.
The module can be: MODBUS or LON.
Important
All connections to the data communication MODBUS/LON must
comply with the requirements for data communication cables.
See literature: RC8AC.
Display
The controller has one plug for a display. Here display type EKA
163B or EKA 164B (max. length 15m) can be connected.
EKA 163B is a display for readings.
EKA 164B is both for readings and operation.
The connection between display and controller must be with a
cable which has a plug at both ends.
A setting can be made to determine whether the Tc or Ts is to be
read out. When the value is read out, the second read-out can be
displayed by briefly pressing the lower button.
Override
The controller contains a functions which can be used together
with the override function in the master gateway/system manager.
Optyma Plus TM
Function via data communication
Day/Night schedule
Function in gateway/system manager
Day/Night control / Time
schedule
Used parameters in OptymaPlus
--- Night setback
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Survey of functions
Function
Para- Parameter by operation via data
meter communication
Normal display
The display shows the temperature value for the suction pressure Ts or from the condensing pressure Tc. Enter which of the two are to be displayed in o17.
During operation, when one of the two is shown in the display, the other value can be
seen by pressing and holding in the lower button.
Thermostat
Set point
The controller's reference Tc is the outside temperature + set point + any applicable
offset.
Enter the set point by pressing the middle button. A offset can be entered in r13.
Unit
Set here if the display is to show SI-units or US-units
0: SI (°C and bar)
1: US (°F and Psig).
Ts / Tc
Thermostat control
Reference
r05
Unit
°C=0. / °F=1
(Only °C on AKM, whatever the setting)
Start / stop of refrigeration
With this setting refrigeration can be started, stopped or a manual override of the
outputs can be allowed. (For manual control the value is set at -1. Then the relay outlets can be force-controlled by the respective reading parameters (u58, u59 etc.). Here
the read value can be overwritten.)
Start / stop of refrigeration can also be accomplished with the external switch function connected to a DI input.
If the external switch function is deselected, the input must be shorted.
Stopped refrigeration will give a ”Standby alarm”.
Night setback value
The controller reference is raised by this value when the controller switches to night
operation.
Reference
Here the current controller reference for condensing pressure Tc can be read out in
degrees.
Minimum condensing temperature (lowest permitted regulation reference)
Here the lowest permitted reference is entered for the condensing temperature Tc.
r12
Main Switch
Maximum condensing temperature (highest permitted regulation reference)
Here the highest permitted reference is entered for the condensing temperature Tc.
r83
Maximum discharge gas temperature
Here the highest permitted discharge gas temperature is entered. The temperature
is measured by sensor Td. If the temperature is exceeded, the fan will be started at
100%. A timer is also started which can be set in c72. If the timer setting runs out,
the compressor will be stopped and an alarm will be issued. The compressor will be
reconnected 10 K below the cut-out limit, but only after the compressor's off timer
has expired.
r84
1: Start
0: Stop
-1: Manual control of outputs allowed
r13
Night offset
r29
Tc Ref
r82
A28
Night setbck
(start of night signal. 0=Day, 1=Night)
Alarm settings
With data communication the importance of the individual alarms can be
defined. Setting is carried out in the
“Alarm destinations” menu via AKM.
AI.Delay DI2
A70
Air flowDiff
A71
Air flow del
Reset alarm
Ctrl. Error
Alarm
The controller can give alarm in different situations. When there is an alarm all the
light-emitting diodes (LED) will flash on the controller front panel, and the alarm relay
will cut in.
Delay of a DI2 alarm
A cut-out/cut-in input will result in alarm when the time delay has been passed. The
function is defined in o37
High condensing temperature
The limit value (difference over normal reference) to which the condensing temperature has increased, and at which an alarm must be issued. Can be set in K.
Delay time for alarm A70. Set in minutes.
Compressor
Compressor control
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.
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Optyma Plus TM
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)
c01
c02
c07
c33
Min. On time
Min. Off time
Restart time
PumpDownLim
c71
Comp mode
c72
Disch. Del
c73
PcMax
c74
Pc Diff
c75
PsLP
c76
PsDiff
c88
LI Offset
Liquid Injection hysterese
The liquid injection relay is then deactivated when the temperature has dropped to
“r84” minus “c88” minus “c89”.
c89
LI Hyst
Compressor stop delay after Liquid injection
Compressor ON-time after relay "LI relay" is went OFF
The LED on the controller’s front will show whether refrigeration is in progress.
c90
LI Delay
n04
Fan control
Kp factor
n05
Tn sec
F07
Fan Speed
F14
DownSlope
F15
Jog Speed
F16
LowTempJog
F17
FanCtrlMode
Minimum time between cut-in of relay (in minutes)
Pump down Limit
Pressure value at which the compressor stops
Definition of compressor control
0: No external switch for start/stop
1: Input DI1 used to start and stop the compressor
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)
Liquid Injection Offset
The liquid injection relay is activated when the temperature is over “r84” minus “c88”
(but only if the compressor is running).
Fan
Ampflification factor Kp
If the KP value is lowered, the fan speed will change.
Integration Time Tn
If the Tn value is increased, the fan speed will change.
Fan speed
The actual fan speed is read out here as a % of nominal speed.
Change in fan speed
A permitted change in fan speed can be entered for when the fan speed is to be lowered. The setting can be entered as a percentage value per second.
Jog speed
Set the fan's start-up speed here. After ten seconds the function jog function will stop
and the fan speed will then be controlled by the normal regulation.
Jog speed at low temperatures
Enter the desired jog speed for outside temperatures of -20°C and lower here.
(For outside temperatures between +10 and -20, the controller will calculate and
utilise a speed between the two jog settings.)
Fan control definition
0: Off
1: The fan is connected to terminal 5-6 and is speed-controlled by an internal phase
cut. The relay on terminal 15-16 connects at speed requirements of 95% or higher.
2: The fan is connected to an external speed control device. The speed control signal
is connected to terminals 28-29. The relay on terminal 15-16 will connect when
regulation is required. (During external control, the settings F14, F15 and F16 will
remain in force)
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
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Minimum fan speed
Set the lowest permitted fan speed here. The fan will be stopped if the user enters a
lower speed.
Maximum fan speed
The fan's top speed can be limited here. The value can be entered by setting the
nominal speed of 100% to the desired percentage.
Manual fan speed control
An override of the fan speed control can be performed here. This function is only
relevant when the main switch is in service mode.
Phase compensation
The value minimises the electrical noise emitted during phase control. The value
should only be changed by specially trained staff.
The LED on the controller’s front will show whether Fan is in progress supplied either
through fan speed control output or fan relay.
F18
MinFanSpeed
F19
MaxFanSpeed
F20
Manual Fan %
F21
Fan Comp
t17
(Times cannot be set via data communication. Settings are only relevant
when there is no data communication).
Day start
t18
Night start
Real time clock
When using data communication the clock is automatically adjusted by the system
unit. If the controller is without data communication, the clock will have a power
reserve of four hours.
Switch to day operation
Enter the time at which the control reference becomes the entered set point.
Change to night operation
Enter the time at which the control reference is raised with r13.
Clock: Hour setting
t07
Clock: Minute setting
t08
Clock: Date setting
t45
Clock: Month setting
t46
Clock: Year setting
t47
Miscellaneous
If the controller is built into a network with data communication, it must have an address, and the system unit of the data communication must then know this address.
Miscellaneous
The address is set between 0 and 240, depending on the system unit and the selected
data communication.
o03
The function is not used when the data communication is MODBUS. It is retrieved
here via the system's scan function.
Access code 1 (Access to all settings)
If the settings in the controller are to be protected with an access code you can set a
numerical value between 0 and 100. If not, you can cancel the function with setting 0.
(99 will always give you access).
Controller software version
o04
Select signal for the display
Here you define the signal to be shown by the display.
1: Suction pressure in degrees, Ts.
2: Condensing pressure in degrees, Tc.
Pressure transmitter settings for Ps
Working range for pressure transmitter - min. value
Pressure transmitter settings for Ps
Working range for pressure transmitter - max. value
Refrigerant setting (only if "r12" = 0)
Before refrigeration is started, the refrigerant must be defined. You may choose between the following refrigerants
2=R22. 3=R134a. 13=User defined. 17=R507. 19=R404A. 20=R407C. 21=R407A.
37=R407F.
Warning: Wrong selection of refrigerant may cause damage to the compressor.
Other refrigerants: Here Setting 13 is selected and then three factors -Ref.Fac a1, a2
and a3 - via AKM must be set.
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o05
Acc. code
o08
SW ver
o17
Display mode
o20
MinTransPs
o21
MaxTransPs
o30
Refrigerant
Optyma Plus TM
Digital input signal - D2
The controller has a digital input 2 which can be used for one of the following functions:
0: The input is not used.
1: Status display from an external safety function (short-circuited =ok for compressor
operation)
2: Main switch. Regulation is carried out when the input is short-circuited, and regulation is stopped when the input is put in pos. OFF.
3: Night operation. When the input is short-circuited, there will be regulation for night
operation.
4: Separate alarm function. Alarm will be given when the input is short-circuited.
5: Separate alarm function. Alarm will be given when the input is opened.
6: Input status, on or off. (DI2 status can be tracked via data communication)
Pressure transmitter settings for PC
Working range for pressure transmitter - min. value
Pressure transmitter settings for PC
Working range for pressure transmitter - max. value
Select the type of condensing unit.
Factory set.
After the first setting, the value is 'locked' and can only be changed once the controller has been reset to its factory setting.
When entering the refrigerant setting, the controller will ensure that the 'Unit type'
and refrigerant are compatible.
S3 Configuration
0 = S3 input not used
1 = S3 input used for measuring of discharge temperature
Save as factory setting
With this setting you save the controller’s actual settings as a new basic setting (the
earlier factory settings are overwritten).
Define the use of the Taux sensor (S5)
0: Not used
1: Used to measure oil temperature
2: Other use. Measuring of optional temperature.
Period time for heating element in crankcase
Within this period the controller will itself calculate an OFF and ON period.
The time is entered in seconds.
Difference for the heating elements 100% ON point
The difference applies to a number of degrees below the 'Tamb minus Ts = 0 K' value.
Difference for the heating elements full OFF point
The difference applies to a number of degrees above the 'Tamb minus Ts = 0 K' value
Operating time for condensing unit
The condensing unit's operating time can be read out here. The read-out value must
be multiplied by 1,000 in order to obtain the correct value.
(The displayed value can be adjusted if required)
Operating time for the compressor
The compressors operating time can be read out here. The read-out value must be
multiplied by 1,000 in order to obtain the correct value.
(The displayed value can be adjusted if required)
Operating time for heating element in crankcase
The heating element's operating time can be read out here. The read-out value must
be multiplied by 1,000 in order to obtain the correct value.
(The displayed value can be adjusted if required)
Number of HP alarms
The number of HP alarms can be read out here.
(The displayed value can be adjusted if required)
Number of LP alarms
The number of LP alarms can be read out here.
(The displayed value can be adjusted if required)
Number of discharge alarms
The number of Td alarms can be read out here.
(The displayed value can be adjusted if required)
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
o37
DI2 config.
o47
MinTransPc
o48
MaxTransPc
o61
Unit type
o63
S3 config
o67
-
o69
Taux Config
P45
PWM Period
P46
CCH_OnDiff
P47
CCH_OffDiff
P48
Unit Runtime
P49
Comp Runtime
P50
CCH Runtime
P51
HP Alarm Cnt
P52
LP Alarm Cnt
P53
DisAlarm Cnt
9
Service
Read pressure Pc
Read temperature Taux
Status on DI1 input. On/1=closed
Status on night operation (on or off ) on =night operation
Read Superheat
Status on DI2 input. On/1=closed
Status on relay for compressor
Status on relay for fan
Status on relay for alarm
Status on relay (not used)
Status on relay for heating element in crankcase
u01
u03
u10
u13
u21
u37
u58
u59
u62
u63
u71
Service
Pc bar
T_aux
DI1 status
NightCond
Superheat SH
DI2 status
Comp Relay
Fan relay
Alarm relay
DO6 status (not used)
CCH Relay
Status on input DI3 (on/1 = 230 V)
u87
DI3 status
Read condensing pressure in temperature
U22
Tc
Read pressure Ps
U23
Ps
Read suction pressure in temperature
U24
Ts
Read ambient temperature Tamb
U25
T_ambient
Read discharge temperature Td
U26
T_Discharge
Read suction gas temperature at Ts
U27
T_Suction
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Manual RS8GD502 © Danfoss 11-2013
Optyma Plus TM
Operating status
(Measurement)
The controller goes through some regulating situations where it is just waiting for
the next point of the regulation. To make these “why is nothing happening” situations
visible, you can see an operating status on the display. Push briefly (1s) the upper
button. If there is a status code, it will be shown on the display. The individual status
codes have the following meanings:
Normal regulation
When the compressor is operating it must run for at least x minutes.
When the compressor is stopped, it must remain stopped for at least x minutes.
Refrigeration stopped by main switch. Either with r12 or a DI-input
Manual control of outputs
No refrigerant selected
Safety cut-out Max. condensing pressure exceeded. All compressors stopped.
Ctrl. state:
S0
S2
S3
S10
S25
S26
S34
Other displays:
Password required. Set password
Regulation is stopped via main switch
No refrigerant selected
No type has been selected for the condensing unit.
PS
OFF
ref
typ
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Manual RS8GD502 © Danfoss 11-2013
0
2
3
10
25
26
34
11
Fault message
In an error situation the LED’s on the front will flash and the alarm relay will be activated. If you push the top button in this situation you can see the
alarm report in the display.
There are two kinds of error reports - it can either be an alarm occurring during the daily operation, or there may be a defect in the installation.
A-alarms will not become visible until the set time delay has expired.
E-alarms, on the other hand, will become visible the moment the error occurs.
(An A alarm will not be visible as long as there is an active E alarm).
Here are the messages that may appear:
Code / Alarm text via data
communication
Description
Action
A2/--- LP alarm
Low suction pressure
See instructions for the condensing unit
A11/--- No Rfg. sel.
No refrigerant selected
Set o30
A16 /--- DI2 alarm
DI2 alarm
Check the function that sends a signal at the DI2 input
A17 / ---HP Alarm
C73 / DI3 Alarm (High / low pressure alarm)
See instructions for the condensing unit
A45 /--- Standby mode
Standby position (stopped refrigeration via r12 or DI1-input)
r12 and/or DI1 input will start the regulation
A80 / --- Cond. blocked
Air flow has decreased.
Clean the condensing unit
A96 / --- Max Disc. Temp
Discharge gas temperature is exceeded
See instructions for the condensing unit
A97 / --- Safety alarm
Safety function on DI2 is activated
Check the function that sends a signal at the DI2 input
E1 /--- Ctrl. Error
Faults in the controller
E20 /--- Pc Sensor Err
Error on pressure transmitter Pc
E30 /--- Taux Sensor Err
Error on Aux sensor, S5
E31/---Tamb Sensor Err
Error on air sensor, S2
E32 / ---Tdis Sensor Err
Error on discharge sensor, S3
E33 / ---Tsuc Sensor Err
Error on suction gas sensor, S4
E39/--- Ps Sensor Err
Error on pressure transmitter Ps
Check sensor and connection
Data communication
The importance of individual alarms can be defined with a setting. The setting must be carried out in the group "Alarm destinations"
Settings from
Settings from
Log
Alarm relay
Send via
Non
High
Low-High
System manager
AKM (AKM destination)
Network
High
1
X
X
X
X
Middle
2
X
X
X
Low
3
X
X
X
Log only
X
Disabled
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Manual RS8GD502 © Danfoss 11-2013
Optyma Plus TM
Operation
Display
The values will be shown with three digits, and with a setting you
can determine whether the temperature is to be shown in °C or in
°F.
Get a good start
With the following procedure you can start regulation very quickly:
1 Open parameter r12 and stop the regulation (in a new and not
previously set unit, r12 will already be set to 0 which means
stopped regulation.
Light-emitting diodes (LED) on front panel
The LED’s on the front panel will light up when the relevant relay
is activated.
= Refrigeration
= heating element in crankcase is on
= Fan running
The light-emitting diodes will flash when there is an alarm.
In this situation you can download the error code to the display
and cancel/sign for the alarm by giving the upper button a brief
push.
The buttons
When you want to change a setting, the upper and the lower button will give you a higher or lower value depending on the button
you are pushing. But before you change the value, you must have
access to the menu. You obtain this by pushing the upper button
for a couple of seconds - you will then enter the column with parameter codes. Find the parameter code you want to change and
push the middle buttons until value for the parameter is shown.
When you have changed the value, save the new value by once
more pushing the middle button.
(If not operated for 20 (5) seconds, the display will change back to
the Ts/Tc temperature display).
2 Select refrigerant via parameter o30
3 Open parameter r12 and start the regulation. Start/stop at input
DI1 or DI2 must also be activated.
4 Go through the survey of factory settings. Make any necessary
changes in the respective parameters.
5 For network.
- Set the address in o03
- Activate scan function in the system manager.
Note
When delivering the condensing unit, the controller will be set to
the condensing unit type (setting o61). This setting will be compared with your refrigerant setting. If you select a "non-permitted
refrigerant", the display will show "ref" and await a new setting.
(In the event of a controller change, 061 must be set as indicated
in the instructions from Danfoss)
Examples
Set menu
1. Push the upper button until a parameter r05 is shown
2. Push the upper or the lower button and find that parameter you
want to change
3. Push the middle button until the parameter value is shown
4. Push the upper or the lower button and select the new value
5. Push the middle button again to freeze the value.
Cutout alarm relay / receipt alarm/see alarm code
• A short press of the upper button
If there are several alarm codes they are found in a rolling stack.
Push the uppermost or lowermost button to scan the rolling
stack.
Set point
1. Push the middle button until the temperature value is shown
2. Push the upper or the lower button and select the new value
3. Push the middle button again to conclude the setting.
Reading the temperature at Ts (if Tc is the primary display) or Tc (if Ts
is the primary display)
• A short press of the lower button
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
13
Menu survey
SW = 1.4x
Parameter
Factory
setting
Code Min.-value Max.-value
Function
Actual
setting
Normal operation
Set point (regulation reference follows the number of degrees above the outside temperature
Tamb)
---
2.0 K
20.0 K
8.0 K
r05
0/°C
1/F
0/°C
Regulation
Select SI or US display. 0=SI (bar and °C). 1=US (Psig and °F)
Internal Main Switch. Manual and service = - 1, Stop regulation = 0, Start regulation =1
r12
-1
1
0
Offset during night operation. During night operation the reference is raised by this value
r13
0K
10 K
2K
Readout of reference for Tc
r29
-
-
-
Min. condensing temperature (lowest permitted Tc reference)
r82
0°C
40°C
10°C
-
Max. condensing temperature (highest permitted Tc reference)
r83
0°C
50°C
40°C
Max. discharge gas temperature Td
r84
50°C
160°C
135°C
Alarms
Alarm time delay on signal on the DI2 input
A28
0 min.
240 min.
30 min.
Alarm for insufficient cooling in condenser. Set temperature difference.
A70
3.0 K
20.0 K
10.0 K
Delay time for A70 alarm
A71
5 min.
240 min.
30 min.
Compressor
Min. ON-time
c01
5s
240 s
5s
Min. OFF-time
c02
3s
240 s
30 s
Min. time between compressor starts
c07
0 min.
30 min.
5 min.
Pump down limit at which the compressor is stopped (setting 0.0 = no function)
C33
0,0 bar
15,0 bar
0,0 bar
Definition of compressor control: 0=no external start/stop; 1=switch on DI1 must start/stop
c71
0
1
1
Time delay for high Td. The compressor will stop when time expires.
c72
0 min.
20 min.
3 min.
Max. pressure. Compressor stops if a higher pressure is recorded
c73
7.0 bar
50.0 bar
23.0 bar
Difference for max. pressure (c73)
c74
1.0 bar
10.0 bar
3.0 bar
Min. suction pressure Ps. Compressor stops if a lower pressure is recorded
c75
0.1 bar
10.0 bar
3.0 bar
Difference for min. suction pressure and pump down
c76
0.1 bar
5.0 bar
0.7 bar
Liquid Injection Offset
c88
0.1 K
20.0 K
5.0 K
Liquid Injection hysterese
c89
10.0 K
30.0 K
15.0 K
Compressor stop delay after Liquid injection
c90
0s
10 s
3s
n04
n05
1.0
20
20.0
120
7.0
40
F07
F14
F15
F16
F17
F18
F19
F20
F21
1,0%
10%
0%
0
0%
40%
0%
0
5,0%
100%
40%
2
40%
100%
100%
50
1,0%
40%
10%
1
10%
100%
0%
20
t17
t18
t07
t08
t45
t46
t47
0 hrs
0 hrs
0 hrs
0 min.
1 day
1 mon.
0 year
23 hrs
23 hrs
23 hrs
59 min.
31 day
12 mon.
99 year
0
0
0
0
1
1
0
o03
o04
0
0/Off
240
1/On
0
0/Off
Control parameters
Amplification factor Kp for PI-regulation
Integration time Tn for PI-regulation
Fan
Readout of fan speed in %
Permitted change in fan speed (to a lower value) % per second.
Jog speed (speed as a % when the fan is started)
Jog speed at low temperature
Definition of fan control: 0=Off; 1=Internal control. 2=External speed control
Minimum fan speed. Decreased need will stop the fan.
Maximum fan speed
Manual control of the fan's speed. (Only when r12 is set to -1)
Phase compensation (should only be changed by specially trained personnel.)
Real time clock
Time at which they switch to day operation
Time at which they switch to night operation
Clock - Setting of hours
Clock - Setting of minute
Clock - Setting of date
Clock - Setting of month
Clock - Setting of year
Miscellaneous
Network address
On/Off switch (Service Pin message)
IMPORTANT! o61 must be set prior to o04
(used at LON 485 only)
14
Manual RS8GD502 © Danfoss 11-2013
Optyma Plus TM
continued
Code
Access code (access to all settings)
Readout of controllers software version
Select signal for display view. 1=Suction pressure in degrees, Ts. 2=Condensing pressure in
degrees, Ts
Pressure transmitter working range Ps - min. value
Pressure transmitter working range Ps- max. value
Refrigerant setting:
2=R22. 3=R134a. 13=User defined. 17=R507. 19=R404A. 20=R407C. 21=R407A. 37=R407F
*
Input signal on DI2. Function:
(0=not used, 1=External safety function. Regulate when closed, 2=external main switch,
3=Night operation when closed, 4=alarm function when closed, 5=alarm function when
open. 6=on/off Status for monitoring.
Min.
Max.
Fac.
o05
o08
o17
0
100
0
1
2
1
o20
o21
-1 bar
6 bar
5 bar
200 bar
-1
12
o30
0
37
0
o37
0
6
0
Pressure transmitter working range Pc– min. value
o47
-1 bar
5 bar
0 bar
Pressure transmitter working range Pc – max. value
o48
6 bar
200 bar
32 bar
o61
0
45
0
Setting of condensing unit type (is factory set when the controller is mounted and cannot be
subsequently changed)
*
The sensor input S3 is to be used to measure the discharge gas temperature (1=yes)
o63
0
1
1
Replace the controllers factory settings with the present settings
o67
Off
On
Off
Defines the use of the Taux sensor: 0=not used; 1=measuring of oil temperature; 2=other
optional use
Period time for heating element in crankcase (ON + OFF period)
Difference for heating elements 100% ON point
Difference for heating elements 100% OFF point
Read-out of operating time for condenser unit. (Value must be multiplied by 1,000). The value
can be adjusted.
Read-out of compressor operating time. (Value must be multiplied by 1,000). The value can be
adjusted.
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.
Service
o69
0
2
0
P45
P46
P47
P48
30 s
-20 K
5K
-
255 s
-5 K
20 K
-
240 s
-10 K
10 K
0h
P49
-
-
0h
P50
-
-
0h
P51
P52
P53
-
-
0
0
0
Readout pressure on Pc
u01
bar
Readout temperature Taux
u03
°C
Status on DI1 input. 1=on=closed
u10
Status on night operation (on or off ) 1=on=night operation
u13
Readout superheat
u21
Status on DI2 input. 1=on=closed
u37
Status on relay to compressor. 1=on=closed
**
u58
Status on relay to fan. 1=on=closed
**
u59
Status on relay to alarm. 1=on=closed
**
u62
Status on relay "terminal 17-19". 1=on=closed
**
u63
Status on relay to heating element in crank case. 1=on=closed
**
u71
Actual
K
Status on high voltage input DI3. 1=on=230 V
Readout condensing pressure in temperature
u87
U22
°C
Readout pressure Ps
U23
bar
Readout suction pressure in temperature
U24
°C
Readout ambient temperature Tamb
U25
°C
Readout discharge temperature Td
U26
°C
Readout suction gas temperature Ts
U27
°C
*) Can only be set when regulation is stopped (r12=0)
**) Can be controlled manually, but only when r12=-1
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
15
Connections
DI1
Digital input signal.
Used to start/stop cooling (room thermostat)
Starts when the input is short-circuited.
DI2
Digital input signal.
The defined function is active when the input is short-circuited/
opened. The function is defined in o37.
Supply voltage
230 V a.c. (This must be the same phase for all 230 V connections).
FAN
Fan connection. Speed controlled internally.
Alarm
There is a connection between terminal 7 and 8 in alarm situations
and when the controller is without power.
AO
Output signal, 0-10 V. Must be used if the fan is equipped with
internal speed control and 0-10 V d.c. input, e.g. EC-motor.
Comp
Compressor. There is a connection between terminal 10 and 11,
when the compressor is running.
Pc
Pressure transmitter, ratiometric AKS 32R, 0 to 32 bar
Connect to terminal 30, 31 and 32.
CCH
Heating element in the crankcase
There is connection between terminals 12 and 14 when heating
takes place.
S2
Air sensor, Tamb. Pt 1000 ohm sensor, eg. AKS 11
Fan
There is connection between terminals 15 and 16 when the fan's
speed is raised to over 95%. (Fan signal changes from terminal 5-6
to 15-16. Connect wire from terminal 16 to the fan.)
S3
Discharge gas sensor, Td. Pt 1000 ohm sensor, eg. AKS 21
S4
Suction gas temperature, Ts. Pt 1000 ohm sensor, eg. AKS 11
S5,
Extra temperature measurement, Taux. Pt 1000 ohm sensor, eg.
AKS 11
Ps
Pressure transmitter, ratiometric e.g. AKS 32R, -1 to 12 bar
Connected to terminal 30, 43 and 44.
EKA Display
If there is be external reading/operation of the controller, display
type EKA 163B or EKA 164B can be connected.
RS485 (terminal 51, 52,53)
For data communication, but only if a data communication
module is inserted in the controller. The module can be MODBUS/
LON.
Terminal 51 = screen
Terminal 52 = A (A+)
Terminal 53 = B (B-)
If data communication is used, it is important that the installation
of the data communication cable is performed correctly.
See separate literature No. RC8AC…
16
LI
Liquid injection in suction line
There is connection between terminals 17 and 19, when the
function is active.
DI3
Digital input signal from low/high pressure monitoring.
The signal must have a voltage of 0 / 230 V AC.
Electric noise
Cables for sensors, DI inputs and data communication must be
kept separate from other electric cables:
- Use separate cable trays
- Keep a distance between cables of at least 10 cm.
- Long cables at the DI input should be avoided
Installation considerations
Accidental damage, poor installation, or site conditions, can give
rise to malfunctions of the control system, and ultimately lead to
a plant breakdown. Every possible safeguard is incorporated into
our products to prevent this. However, a wrong installation, for
example, could still present problems. Electronic controls are no
substitute for normal, good engineering practice.
Danfoss will not be responsible for any goods, or plant components, damaged as a result of the above defects. It is the installer's
responsibility to check the installation thoroughly, and to fit the
necessary safety devices. Special reference is made to the necessity of signals to the controller when the compressor is stopped
and to the need of liquid receivers before the compressors.
Your local Danfoss agent will be pleased to assist with further
advice, etc.
Manual RS8GD502 © Danfoss 11-2013
Optyma Plus TM
Data
Supply voltage
Sensor S2, S3,
S4, S5,
230 V a.c. +10/-15 %. 5 VA, 50/60 Hz
Pt 1000
Measuring range
Accuracy
Controller
Pt 1000 sensor
Measuring of
Pc, Ps
Display
Pressure transmitter
LED, 3-digits
-60 to +120°C
(S3 to 150°C)
±1 K below -35°C
± 0.5 K between -35 to +25°C;
±1 K above +25°C
±0.3 K at 0°C
±0.005 K per grad
Ratiometric. eg. AKS 32R
External display
EKA 163B or 164B
Signal from contact functions
Digital inputs
Requirements to contacts: Gold plating
DI1, DI2
Cable length must be max. 15 m
Use auxiliary relays when the cable is longer
Digital input DI3 230 V a.c. from safety pressostat. Low/high pressure
Electrical connection cable
Max.1.5 mm2 multi-core cable
Max. 240 V a.c. , Min. 28 V a.c.
Max. 1,5 A
Leak < 1 mA
CE
(250 V a.c.)
Solid state
output
Fan
Relays*
Comp, CCH
4 (3) A
Alarm, Fan, LI
4 (3) A
Density
0-10 V d.c. (for external speed control of fans)
Min. load = 10 K ohm. (Max. 1 mA)
0 to +55°C, During operations
-40 to +70°C, During transport
20 - 80% Rh, not condensed
No shock influence / vibrations
IP 20
Mounting
DIN-rail or wall
Weight
Data communication
Power reserve
for the clock
0.4 Kg
Analog output
Environments
Approvals
Extension options
MODBUS/LON
4 hours
EC Low Voltage Directive and EMC demands re CEmarking complied with
LVD tested acc. EN 60730-1 and EN 60730-2-9, A1, A2
EMC-tested acc. EN 61000-6-2 and EN 61000-6-3
* Comp and CCH are 16 A relays. Alarm and Fan are 8 A relays. Max. load must be observed
Optyma Plus TM
Manual RS8GD502 © Danfoss 11-2013
17
Ordering
Function
Code no.
Optyma PlusTM
Condensing unit controller
Prepared for data communication
Plug for screw terminals not enclosed
084B8135
(12 pcs.)
Plug
Plug with screw terminals
084B8164
(12 set)
EKA 178B
Data communication module MODBUS
084B8571
EKA 175
Data communication module LON RS485
084B8579
EKA 163B
External display with plug for direct connection
084B8574
EKA 164B
External display with operation buttons and plug for direct
connections
084B8575
Wire with plug
Wire for display unit (9 m, with plug)
084B7630
(24 pcs.)
EKA 183A
Programming key
084B8582
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.
All trademarks in this material are property of the respecitve companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
18
Manual RS8GD502 © Danfoss 11-2013
ADAP-KOOL®
Type
Optyma Plus TM
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