ICold RCS Controller Electronic Refrigeration Controller System - September 2010 / BULLETIN 100-50-4
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
September 2010 / BULLETIN 100-50-4 iCold RCS Controller Electronic Refrigeration Controller System
Bulletin 100-50-4 / Page 1
Introduction iCold Features
The Sporlan Electronic
and Benefits
Refrigeration Controller
• Complete package ready to
System (RCS) is a micro-
processor-based system control out of the box
designed to precisely control • Integrated digital temperature
refrigeration evaporators in
control
walk-in coolers and freezer
applications. Its state-of- • Conventional and advanced
the-art design accurately defrost routines
controls refrigerant flow into
the evaporator by means of • True Pressure/Temperature Superheat
a Sporlan Electric Expansion • Universal compatibility, controls all Sporlan valves
Valve (EEV). By using preci-
sion pressure and temperature
(Bipolar and Unipolar)
sensor inputs, the RCS is able • Watertight NEMA 12K enclosure
to control evaporator tempera-
ture more accurately and con- • RS-485 communication port allows remote verification
sistently than the mechanical of parameters and control
thermostatic expansion valves
that are employed in traditional
• Pluggable connectors for quick and easy installation
systems. • Compressor protection algorithms
The iCold packages all required • Onboard user interface with 3 digit alphanumeric display
sensors and power supply
along with a RCS controller for
the utmost convenience.
Operation are two levels of settings on the
controller. The lower level setting
In addition to superheat and The RCS controller is a versatile will allow the adjustment of the basic
temperature control, the RCS design and can be applied to any parameters not related to the valve
is configured to control evapo- application requiring EEV control. control. While the primary level of
rator fans and defrost heaters. The RCS is field configurable and setpoints will control the system, the
A large alphanumeric LED may be used with any of the Sporlan advanced settings allow the skilled
display and optical encoder EEVs. The defrost control schemes technician to configure the board for
interface simplifies system are possible through the time, quan- the optimum control of the evapora-
setup, while allowing program-
tity, and temperature termination tor superheat.
ming flexibility for full system
settings. The RCS includes a real-
optimization. Figure 1 provides
time clock that may be set through
a general layout of the system.
the onboard display or through a Sensors
laptop connection to allow synchro- All of the required sensors are
nized defrosts. included in the iCold package. It is
supplied with three temperature
The integrated display allows the probes and a pressure transducer
end user to have a digital thermostat to allow the control of superheat,
mounted to the controlled space. defrost, fans, and space temperature.
The display alternates between the Each sensor is provided with a 6.5
system status and the room tempera- ft. (2 m) lead and may be extended
ture. The display consists of a 3 digit to 100 ft. (30.5 m) using 18 gage
alphanumeric display that allows shielded twisted pair. Sensor wires
full configuration of the controller should never be in the same conduit
without additional hardware. There as high voltage lines (>30V). Care
FOR USE ON REFRIGERATION and/or AIR CONDITIONING SYSTEMS ONLY
Bulletin 100-50-4, September 2010, supersedes Bulletin 100-50-4, September 2007, and all prior publications.Page 2 / Bulletin 100-50-4
and external alarm. The power sup-
Specifications
ply for the solenoid should be sized
according to the instructions in
Bulletin 30-10.
RCS GENERAL SYSTEM PRESSURE TRANSDUCER
SPECIFICATION (Suction Pressure)
Input voltage Maximum seal temperature Communication
24 AC/DC VAC (± 10%) range Communication software (PERC) is
40 VA minimum -40°F to 120°F available for free, contact your local
Operating ambient Seal type Sales Engineer. The PERC software
temperature Neoprene displays all of the setpoints and mea-
-40°F to 120°F Pressure range surements in a single view to allow
Control temperature range 0 to 150 psi the user to rapidly configure the
-20°F to 60°F Transducer accuracy controller for the application. This
Control update rate % of F.S. 1% requires the use of the board’s RS-485
1 Hz max. Supply voltage output. The RCS may communicate
True superheat regulation 5 Volts DC +/- 0.5 VDC on site through direct connection to
+/-2°F Output range the computer. This requires a con-
LED Display 0.5 (0 psi) to nection to the PC using an interface
3 character, 16 element 4.5 (150 psi) Volts DC cable like a USB to RS-485, or other
alphanumeric display Electrical connection
converter. The controller may also be
Mates with Packard 12065287
accessed remotely through a modem.
COMMUNICATIONS
THERMISTOR Remotely monitoring the controller
Remote setting and
Nominal allows the technician to diagnose
monitoring
3,000 ohms at 25°C the problem before arriving at the
RS485
(two button) job. This gives the technician the
BATTERY LIFE 2,000 ohms at 25°C flexibility to monitor the system and
Real time clock battery (optical encoder) potentially fix the problem without
backup Accuracy requiring a service call.
>10 years -4°F to 122°F = ±1°F
(during active operation) Application
The RCS package combines the EEV
should be taken to properly attach ducer allows the controller to convert control with many other system
each probe to the location for its the suction pressure to a saturated components. Traditional control of
temperature to calculate superheat. refrigeration equipment has relied
function.
on a piece meal approach. Each
control function is carried out by
The first temperature sensor is
installed on the suction line, with
Relays discrete control components; such
The fan and defrost relays on the as a defrost time clock, thermostat,
included straps, and the temperature
board can be loaded to 30A in defrost termination switch, etc.
reading allows the RCS to calculate
normally closed operation and 40A Recent technological advances have
the superheat. When installing the integrated these functions into a
in the normally open. The fans are
superheat sensor, the same practices single device that is easy to use. The
primarily engaged when the com-
should be followed as installing a RCS is a control solution designed
pressor is running. The fan control
TEV bulb. The sensor should never to be used with any system utilizing
may be altered by changing the fan
go on the top or bottom of the line. a single condenser and evaporator.
temperature and drain time set-
It should be located on a horizontal tings. The defrost relay is controlled This is a reasonably priced alterna-
section of line in the 4 or 8 o’clock by the defrost settings and may be tive that allows, for the first time,
position. The second temperature initiated at a specific time of day. a single point of reference for all
sensor is used to control the space Once the time of the first defrost is control components for these types
temperature. It is also displayed as a set, the number per day may be set, of systems. The NEMA 12K enclosure
process variable. This sensor should determining the number of defrosts allows the controller to be mounted
be located in the space in a loca- required will depend on the system. conveniently in almost any loca-
tion that will not be affected by the tion. The 5 prepositioned knockouts
airstream or any heat source, such as The board is also equipped with a provide easy access to the proper
a door. The 0-150 psig pressure trans- solid state liquid line solenoid relay locations when wiring the board.Bulletin 100-50-4 / Page 3
With only the addition of an EEV, the
Service Parts
controller is ready to be installed on
the system. When selecting the EEV,
refer to Bulletin 100-20. This bulletin
gives step by step instructions on the PART DESCRIPTION PART NUMBER
selection of the valve. RCS Controller (board only) 953161
Pressure Transducer 953091
The selection of the controller is sim- 150 psig, 6.5’ (2 m)
plified due to the controller’s ability Temperature Sensor
to be configured on site. The 24V 6.5’ (2 m) 3,000 ohm 952551
transformer included in the pack- 12’ (4 m) 2,000 ohm 952662
age is ready to receive 120V or 230V. Well Sensor 952795
The power being supplied is simply Relay Board Available on request
selected at the flip of a switch.
Dimensions
6.5’ (1.98 m) 1.26” (32 mm)
2.13” Temperature Sensor
(5.41 cm) .20”
(5.08 mm)
2.03” max.
(51.6 mm)
1.40” max.
(35.6 mm) Ground
Supply
Voltage
ø0.67”
(ø17.0 mm)
8.75” Output
(22.23 cm)
0.6250” (15.9 mm) across flats
0.25” SAE female flare with ø0.95”
deflator 7/16-20 UNF-2B (ø24.0 mm) typ.
6.56”
(16.66 cm) Pressure Transducer
0.25” 0.94”
(6.35 mm) (23.88 mm)
0.625”
(15.88 mm)
Optical
1.0”
Encoder (25.40 mm)
3.25” 1.44”
(8.26 cm) (36.58 mm)
RCS Controller Board Well SensorPage 4 / Bulletin 100-50-4
Wiring Schematic
Fans
Heaters NC NC
NO L2
NO
L1
COM
COM Load
L2 L1
L2 L1 Line
Alarm L1
L2
Orange | Black Liquid
ESX All Others Yellow | White Line Valve
5-Wire 4-Wire Red | Green
Black | Red
Gray | NA
Auxiliary Temp.
+A
RS-485-2 -B
GRD Defrost Termination Temp.
Not used +12V Room Temp.
+5V
+A Evaporator Outlet Temp.
RS-485-1 -B
GRD
Red Suction Pressure Transducer
24 Volt VAC Black
Green
Transformer*
230
120
*Select Voltage
Stepper EEV
Figure 1
Installation Ordering
Instructions Instructions
Installation instructions are available Each RCS package, Part Number 953170, includes:
for the RCS controller, temperature 1 RCS Controller
sensor, pressure transducer and 1 Dual Voltage Transformer
monitoring software disk. Additional 3 Temperature Sensors
product information and updates 1 Temperature Transducer
may be found at www.sporlan.com. 1 NEMA 12K Enclosure
PRODUCT FORMS
RCS Controller
Form SD-302
Temperature Sensor
Form SD-245
Pressure Transducer
Form SD-245
Monitoring Software Disk
Form SD-303© 2010 Parker Hannifin Corporation 92010 / Bulletin 100-50-4
Parker Hannifin Corporation
Sporlan Division
206 Lange Drive • Washington, MO 63090 USA
phone 636 239 1111 • fax 636 239 9130
www.sporlan.comYou can also read
