Parker Sporlan Kelvin II User manual

Sporlan Kelvin II
Refrigeration Controller
User’s Manual, November 2009
SD-324

Page 1
Description
The Kelvin II is a standalone superheat controller. The Kelvin
II may be connected with a MODBUS master or a Network
Master to give remote access to pressure and temperature
readings in addition to viewing and editing the controller’s
setpoints. The user can also take advantage of the easy to use
local display or a Remote Display to accomplish the same
tasks.
1. Kelvin II Configuration
Specifications
nInput Voltage: 24 VAC (± 10%), 40 VA minimum to board
with external transformer
nOperating ambient temperature: -40°F to 120°F
nLED: One Power LED
nCommunications: 1 RS485 Port, 1 USB port
(Not operational)
n4 Digit 7 segment display
nInputs:
– Optical Encoder (Knob)
– One Pressure Input
– Three Temperature inputs
nValve Control of all Sporlan Electric Expansion Valves
“EEV”
n3 amp Solid State Relay for Liquid Line Solenoid Kelvin II
w/o Local Display
n1 amp Solid State Relay for Liquid Line Solenoid Kelvin II
w/Local Display
2. Kelvin II Connections
The Kelvin II has screw terminals on the each side of the
controller. The controller should be wired as follows and as
shown in Figure 1.
Item Wire (line) Kelvin II
connect point
Power 24VAC 1
24 VAC 2
Valve
SEI, SER, SEH ESX —
N/C Gray 4
Black Orange 5
White Yellow 6
Green Red 7
Red Black 8
RS-485
Ground 13
A+ 14
B- 15
Liquid Line Solenoid Line 19
Load 20
Auxiliary Temperature Sensor
(Displayed menu item: S-3) T3 27
28
Room Temperature Sensor
(Displayed menu item: CtP) T2 29
30
Coil Out Temperature Sensor
(Display option: tout) T1 31
32
Pressure Transducer
(Displayed menu item: SucP)
Sense (WHITE) 33
Ground (GREEN) 34
+5 VDC (BLACK) 35
3. Kelvin II Display
Upon the rst power-up from Sporlan, the Kelvin II will en-
ter the setup menu. This menu allows the user to set some
critical setpoint values, seen in Table 1, before the controller
will operate. These critical values can be set via the local or
remote displays, MODBUS, or Network Master. (Note: Only
the Valve Type and Refrigerant have to be set via MODBUS
or Network Master for the controller to operate) Once these
values are entered the Kelvin II will then begin its control. If
the setup menu is displayed on the local or remote displays
124 VAC
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
19
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20 24 VAC
N/C
N/C
N/C
N/C
N/C
Ground
RS-485 A+
RS-485 B-
N/C
N/C
N/C
Load
Line
N/C
N/C
N/C
N/C
N/C
N/C
T3-
T3+
T2-
T2+
T1-
T1+
PWR
Room
Tout RS485
Valve
LL Sol
N/C
Pressure
Aux
SER, SEI, SEH ESX
Red Black
Green Red
White Yellow
Black Orange
N/C Gray
Black
Green
White
+5VDC
Ground
Sense
Figure 1

Page 2
and the user sets these values via MODBUS then the Kelvin
II will automatically leave the setup menu.
Table 1 Setup Menu
Displayed Menu Item Description Selections
StEP Valve Type 1596, 3192, 2500, 6384, 400
rEFr Refrigerant
r22, 134A, 402A, 404A,
407A, 407C, 410A, 417A,
r507, 422d, r744, 245F
PtYP Pressure Sensor Type gAUg, AbSL
un_T Temperature Units FAHR, CELS
un_P Pressure Units PSI, BAR
After setup, the Kelvin II defaults to showing the Superheat
value. The user can then turn the knob to view the other pro-
cess values of their system. The screen will alternate between
the process values identity and value alternating every 3 sec-
onds. For ease of use, the value that is displayed for a process
value may come in the form of text to eliminate the need of
‘looking up the meaning’. The menu text and meanings for
process values are described in Table 2.
The user may also view/edit the setpoints by pressing the knob
and holding it down for 5 seconds. The user is then prompted
for a password to verify his credentials. The knob should be
rotated up to ‘111’ for the password. If the password is cor-
rect the user may change the setpoints to the value he desires
in order to obtain optimum system performance. The menu
text and meanings for setpoint values are described in Table 3.
Setpoints are saved to the controller when the user leaves the
Setpoint menu by pressing the knob when “ESC” is shown.
The setpoint menu has a timeout of 60 seconds for inactiv-
ity. When this timeout is reached the controller goes back to
showing the process values and does not save any setpoints
that might have been changed. If the user is in the Manual
Valve Position setpoint then this timeout length is 60 minutes.
As long as the controller does not time out the 60 minutes,
Setpoints are saved to the controller when the user leaves the
Setpoint menu by pressing the knob when “ESC” is shown.
All process values and setpoints are accessible1through the
local and remote displays.
Table 2 Process Value Menus
Displayed Menu Item Description Range
SuPH Superheat 0 to 165°F, 0 to 91.6°C
SucP Suction Pressure40 to 150 PSI, 0 to 10.34 Bar
tSAt Saturation Temperature -60 to 150°F, -51.1 to 65.6°C
tout Suction Temperature -60 to 150°F, -51.1 to 65.6°C
CtP System Temperature -60 to 150°F, -51.1 to 65.6°C
PoSn Valve Position 0 to 100% Open
S-3 Auxiliary Temperature2-60 to 150°F, -51.1 to 65.6°C
rELA Solenoid Status dEng, Eng
StAt System Cycle Status Current cycle and manual
valve position state
ALS Alarm Status3noAL or all active alarms
Table 3 Setpoint Menu
Displayed
Menu
Item
Description Range Default
Setting
User
Setpoints
ESC Escape and save
settings — —
SHSP Superheat Setpoint 0 to 45°F, 0 to 25°C 8
rEFr Refrigerant
r22, 134A, 402A,
404A, 407A, 407C,
410A, 417A, r507,
422d, r744, 245F
404A
d_On Delay On 0 to 60 seconds 0
dOFF Delay Off 0 to 60 seconds 0
d_St Delay Percent Open
of Valve 0 to 100 percent 0
CtSP Cut-out Suction
Pressure
0 to 1504PSI,
0 to 10.34Bar 0
H_oP Maximum Operating
Pressure
0 to 1504PSI,
0 to 10.34Bar 150
C_in Cut-in Temperature -60 to 125°F,
-51.1 to 51.6°C -59
Cout Cut-out Temperature -60 to 124°F,
-51.1 to 51.1°C -60
HiCP Max Valve Capacity 20 to 100% 100
SUPS Supermarket Setting OFF, ON OFF
-P- Proportional
Coefficient 0 to 100 40
-I- Integral Coefficient 0 to 100 25
-d- Derivative
Coefficient 0 to 100 5
StEP Valve Type 1596, 3192, 2500,
6384, 400 1596
SPoS Manual Valve
Position 0 to 100% Open Present Position
nEt
Network Type
(MODBUS or
Network Master)
nbUS (MODBUS)
or ProP (Network
Master)
nbUS
Addr MODBUS/Network
Master Address 1 to 255 1
un_P Pressure Units PSI, BAR PSI
un_T Temperature Units FAHR, CELS FAHR
PtYP Pressure Sensor
Type AbSL, gAUg gAUg
CaLP Pressure Sensor
calibration value
-5 to 5 PSI,
-0.34 to 0.34 Bar 0
CLt1 Tout calibration
value
-5 to 5°F, -2.7 to
2.7°C 0
CLt2 Ctp calibration value -5 to 5°F, -2.7 to
2.7°C 0
CLt3 S-3 calibration value -5 to 5°F, -2.7 to
2.7°C 0
CAdr Controller Display
Address 0 to 99
0 or 1
for local
display
4. Kelvin II MODBUS
The Kelvin II can communicate with a MODBUS master.
The Kelvin II will transfer process values and setpoints via
MODBUS.
1Setpoints can only be viewed and edited when the proper password is entered.
2 The Auxiliary Temperature sensor input has a special Pumpdown feature. If a “short” or switch closure is placed across these terminals, the valve will
shut for pumpdown. The full details of this feature are described in Section 5.
3The Alarm Status process value is described in Section 6.
4The maximum value varies based on which refrigerant is selected. (R-410A is 300 PSI, R-744 is 500 PSI and all others are 150 PSI).

Page 3
The Kelvin II only supports the RTU transmission mode. The
serial settings are as follows:
n9600 baud
n8 data bits
n1 stop bit
nEven parity
The Kelvin II supports the ‘Read Input Registers’, ‘Read
Holding Register’, ‘Write Single Register’, ‘Read Multiple
Coils’ and ‘Write Single Coil’ function codes. Any other re-
quest will result in an exception response. The Kelvin II will
allow a full and partial block read of the Input and Holding
registers and Coils.
4.1. Scaling
In order to preserve precision, scaling was implemented when
using Bar or Celsius for units. PSI and Fahrenheit units are
both in whole numbers and have no scaling. The tables of the
MODBUS memory map below reect this implementation.
The Celsius values that are transferred via MODBUS are 10X.
For example, if Celsius is chosen for the temperature units
then 45°C is transferred for the Superheat. The actual Super-
heat is 4.5°C. If the user desired to change a setpoint they
should keep this in mind when they enter a value.
The Bar values that are transferred via MODBUS are 100X.
For example, if Bar is chosen for the pressure units then 1034
Bar is transferred for the Maximum Operating Pressure. The
actual Maximum Operating Pressure is 10.34 Bar. If the user
desired to change a setpoint they should keep this in mind
when they enter a value.
4.2. MODBUS Memory Map
Table 4 Memory Map
MODBUS
Function
Code
Mapped
Data Data Map Range
Read Coils
(0x01)
Manual
Valve
Control
Bit 0 = Manual Valve
Enabled Flag
Bit 1 = Manual Valve
Duration Enabled
Flag
0 = Disabled,
1 = Enabled.
Read Holding
Register
(0x03)
Setpoints
0. Superheat
Setpoint
0 to 45°F, 0 to 250°C
(0.0 to 25.0°C)
1. Refrigerant Type
0 = r22 1 = 134A
2 = 402A 3 = 404A
4 = 407A 5 = 407C
6 = 410A 7 = 417A
8 = 422A 9 = 422d
10 = r507 11 = r744
12= 245F
2. Delay On Relay 0 to 60 seconds
3. Delay Off Relay 0 to 60 seconds
4. Delay Steps 0 to 100 % Open
5. Cut-out Suction
Pressure
0 to 1505PSI, 0 to 1034
Bar (0 to 10.34 Bar)
MODBUS
Function
Code
Mapped
Data Data Map Range
Read Holding
Register
(0x03)
Setpoints
6. Max Operation
Pressure
0 to 150 6PSI, 0 to 1034
Bar (0 to 10.34 Bar)
7. Temperature
Cut-in
-60 to 125°F,
-511 to 516 °C
(-51.1 to 51.6 °C)
8. Temperature
Cut-out
-60 to 124°F,
-511 to 511 °C
(-51.1 to 51.1 °C)
9. Valve Maximum 20 to 100 %
10. Supermarket
Mode 0 = OFF 1 = ON
11. P 0 to 100
12. I 0 to 100
13. D 0 to 100
14. Valve Type
0 = 1596 1 = 3192
2 = 2500 3 = 6384
4 = 400
15. Manual Valve
Position 0 to 100 % Open
16. Network Type 0 = MODBUS
1 = Network Master
17. Unit Address 1 to 255
18. Pressure Units 0 = PSI, 1 = BAR
19. Temperature
Units 0 = FAHR, 1 = CELS
20. Pressure Sensor
Type 0 = GauG, 1 = ABSL
21. Pressure
Calibration Offset
-5 to 5°F,
-34 to 34 Bar
(-0.34 to 0.34 Bar)
22. Suction
Temperature
Calibration Offset
-5 to 5°F,
-27 to 27°C
(-2.7 to 2.7°C)
23. Room
Temperature
Calibration Offset
-5 to 5°F,
-27 to 27°C
(-2.7 to 2.7°C)
24. Auxiliary
Temperature
Calibration Offset
-5 to 5°F,
-27 to 27°C
(-2.7 to 2.7°C)
Read Input
Registers
(0x04)
Process
Variables
0. Superheat
0 to 165°F,
0 to 916°C
(0 to 91.6°C)
1. Suction
Pressure6
0 to 150 PSI,
0 to 1034 Bar
(0 to 10.34 Bar)
2. Saturation
Temperature
-60 to 150°F,
-511 to 656°C
(-51.1 to 65.6°C)
3. Suction
Temperature
-60 to 125°F,
-511 to 656°C
(-51.1 to 65.6°C)
4. Room
Temperature
-60 to 125°F,
-511 to 656°C
(-51.1 to 65.6°C)
5. Valve Capacity 0.0 to 100.0% Open
(0.0 to 100.0)
6. Auxiliary
Temperature
-60 to 125°F,
-511 to 656°C
(-51.1 to 65.6°C)
7. Relay Status 0 = Deenergized,
1 = Energized
5The maximum value varies based on which refrigerant is selected. (410A is 300 PSI, r744 is 500 PSI and all others are 150 PSI).
6The maximum value varies based on which refrigerant is selected. (410A is 300 PSI, r744 is 500 PSI and all others are 150 PSI).

Page 4
MODBUS
Function
Code
Mapped
Data Data Map Range
Read Input
Registers
(0x04)
Process
Variables
8. Alarm Status
If Bit set then alarm is
active:
Bit 0 = Suction
Transducer Failure
Bit 1 = Tout Sensor
Failure
Bit 2 = High Superheat
Bit 3 = Low Superheat
9. System Cycle
Status
If Bit set then mode is
active:
Bit 1 = Setup Mode
Bit 2 = Off Cycle
Bit 3 = Cooling Cycle
Bit 4 = Pump-down Cycle
Bit 5 = Manual Valve
Override Mode
Write Single
Coil (0x05)
Manual
Valve
Control
Bit 0 = Manual Valve
Enabled Flag
0 = Disabled,
1 = Enabled.
The Manual Valve
duration Bit is read-only.
Write Single
Register
(0x06)
Setpoints Same as above.
The max number of
registers written at a
time is
1. The limits can be
seen above in the
‘Read Holding
Register’ definition.
5. Kelvin II Features
5.1. Pumpdown Feature
The Kelvin II will initiate a pumpdown when Auxiliary Tem-
perature sensor terminals are shorted. If desired, this temper-
ature connection could be set up as a dry contact. When a
pumpdown is desired the contact should be closed. The pump-
down will be ended when the short is removed provided that
there are no sensor alarms.
5.2. Manual Valve Position Feature
The Kelvin II has the ability to manually control the valve.
To enable this manual control via the local or remote displays
simply open the setpoint menu and edit the ‘SPoS’ setpoint.
When the value is displayed for this setpoint the user is manu-
ally controlling the valve. The valve position can be changed
by rotating the knob clockwise or counterclockwise. There is
an inactivity timer of 60 minutes while in manual control. The
timer is reset each time the user moves the valve. The manual
control of the valve is ended when the user presses the knob to
go back to displaying ‘SPoS’ or a timeout has been reached.
6. Kelvin II Alarms
The Kelvin II has 4 alarms. The following table lists the
possible alarms and the text that is seen on the controller.
The controller’s alarm status can be viewed via MODBUS,
Network Master, and local and remote displays.
Table 5 Alarms
Alarm Text Meaning
NoAL No Alarms active
PSAL Pressure Sensor alarm
TSAL Tout Sensor alarm
HSAL High Superheat alarm
LSAL Low Superheat alarm
Normally, on the process value screens, the process value
text alternates with its value. When an alarm is activated the
alarm status “-AL-“screen is added to the rotation to make the
user aware that an alarm has been activated. The Alarm Status
menu display item ALS, will show the active alarms shown
in Table 5.
7. Kelvin II Display Networking
The Kelvin II displays can be set up to access other Kelvin II
controllers on the network. The controller’s current ‘CAdr’
value can be determined by pressing down the button on the
display while viewing a process value. To enable the display
network the ‘CAdr’ setting MUST be set to a unique nonzero
value with the RJ-45 connector on the side of the controller
DISCONNECTED.
After ‘CAdr’ has been set, an ‘End’ screen is added just be-
fore the ‘SuPH’ process value. Pressing the button on the
display while viewing the ‘End’ screen brings up a menu al-
lowing the selection of other Kelvin II controllers connected
to the display network. Turning the knob allows the selec-
tion of other Kelvin II controllers based on their appropriate
‘CAdr’ address. The local controller is listed as ‘LocL’ by a
local display. Note: the remote display always includes the
‘End’ screen since it must be able to view any controller on the
display network.
8. Kelvin II Factory Reset
A factory reset can be performed by holding the button down
on the local or remote displays for 5 seconds when power is
rst applied. If using a local display the display will show
‘FrSt’ while the factory reset is being performed and then
automatically connect to the local controller.
If using a remote display the display will show ‘FrSt’ and
switch to a menu that allows the selection of the controller
to reset. To perform a factory reset, select the controller with
the appropriate ‘CAdr’ value. The display should show ‘----‘
while the reset is being performed. When nished perform-
ing factory resets turn the knob counterclockwise until ‘ESC’
is shown on the display. Pressing the button while ‘ESC’ is
shown on the display exits the factory reset menu and should
automatically connect to a controller on the display network.
Table 6 Replacement Parts
Part Number Description
952560 Kelvin II without display
952561 Kelvin II with local display
952562 Kelvin II Remote panel display
952662 Temperature Sensor Assembly
952795 Well Sensor Kit
953091 Pressure Transducer 150 psig with cable
952995 Pressure Transducer 150 psia with cable
952740 Pressure Transducer 300 psig with cable for
R-410A applications only
952504 Pressure Transducer 500 psig with cable for
R-477 applications only

112009 / SD-324
Parker Hannifin Corporation
Sporlan Division
206 Lange Drive • Washington, MO 63090 USA
phone [phone] • fax [phone]
www.sporlan.com