The Sporlan Kelvin II is a standalone superheat controller. The
Kelvin II controller may also be connected with a Modbus
®
master
for remote access to pressure and temperature readings in addition
to viewing and editing the controller’s setpoints. A remote display
unit is optional.
Features:
• Superheat control
• Optional room
temperature control
• 4-digit LED display and input knob
• OEM version available without display
• Optional remote display unit
• Optional display networking for 2-valve control
• Optional controller networking for remote access
• Four temperature inputs (Sporlan surface or air sensors)
• One pressure input (Sporlan transducer)
• One digital input (for external switch or relay)
CONTENTS PAGE
1. INSTALLATION 1
2. SETUP
2
3. SETPOINT MENU OPERATION
3
4. SYSTEM OPERATION
3
5. DISPLAY NETWORKING
5
6. CONTROLLER NETWORKING
6
7. PID TUNING
7
8. TROUBLESHOOTING
8
APPENDIX A - Setup Menu
10
APPENDIX B - Process Values
11
APPENDIX C - Setpoint Parameters
12
APPENDIX D - Accessories
14
APPENDIX E - Technical Specifications
15
APPENDIX F - Controller Status
15
APPENDIX G - Miscellaneous Displays
15
APPENDIX H - Wiring Diagram
16
APPENDIX I - Sensor Installation
17
APPENDIX J - Modbus Memory Map
18
APPENDIX K - 2k Temperature Sensor Specs
20
APPENDIX L - 3k Temperature Sensor Specs
22
Sporlan Kelvin II Controller
Installation and Operation Instructions
SD-324M/122011 Controller v. E
1. INSTALLATION
Refer to Appendix H - Wiring Diagram and Appendix I - Sensor
Installation
Tools required:
• Small flat screwdriver for terminal connections
• Phillips and flat screwdrivers
• Cordless screwdriver
• Needle-nose pliers
• Wire cutters
• Scotch-Brite
TM
pad
• Two #8 x ½” self-tapping screws to mount DIN rail
1. Mount the controller in a rain-tight, protected location using
the supplied DIN Rail. To leave enough working space, the
suggested mounting area is 10 inches high and 5 inches wide.
The minimum depth is 3 inches. See Figures 1 and 2.
2. Connect the suction temperature sensor wires to terminals 31
and 32. The sensor is not polarized.
3. Connect the pressure transducer wires to terminals 33, 34,
and 35. Sporlan has used transducer cables with two wire
color combinations; see Table 1.
Maximum torque on screw
terminals is 3.5 in-lbs.
4. Connect the optional room temperature sensor wires to termi-
nals 29 and 30. The sensor is not polarized.
5. Connect terminals 27 and 28 to a digital input. A short or a
closed contact from an external relay will close the valve for
pump down. See Section 4 - System Operation.
6. Connect the Sporlan EEV wires to terminals 5, 6, 7, and 8.
7. Connect power wires to terminals 1 and 2. Power require-
ments are 24 volts AC at 40 VA, Class II transformer.
8. Remove the protective clear film from the front of the Kelvin
II controller.
NOTE: Sensor leads may be extended to 100 ft. (30.5 m) with
18 awg wires and Scotchlok™ UR connectors for
long- term integrity.
WARNING: Route and secure cables away from hot surfaces,
high voltage lines, and moving components.
NOTE: The Sporlan Kelvin II refrigeration controller should
be installed only by a qualified professional. All other
system components (valves and sensors) should be
supplied by Sporlan to ensure compatibility and
proper operation. There are no user-serviceable com-
ponents inside the Kelvin II Controller. Opening the
case will void the warranty.
WARNING: Use caution when working around high voltage
components. Safety covers should be used for
personal safety on high voltage panels.
Kelvin IIsd
p/n 952567 Controller with a
display
Kelvin IIs
p/n 952569 Controller without a
display
Kelvin IId
p/n 952568 Remote display unit
