RefPlus Guardian+ RC-C Programming Manual
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RefPlus Guardian+ RC-C Programming Manual

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PROGRAMMING
MANUAL
CONDENSER CONTROL
RC-C

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Summary of Contents for RefPlus Guardian+ RC-C

  • Page 1 PROGRAMMING MANUAL CONDENSER CONTROL RC-C...

  • Page 2: Table Of Contents

    able of onTenTs SPECIFICATIONS ....................................3 REPLACEMENT PARTS ..................................3 TYPICAL WIRING DIAGRAM ................................4 OVERALL DIMENSIONS ..................................5 INSTALLATION ...................................... 5 INTERFACE KEY DESCRIPTIONS ..............................6 NAVIGATION PRINCIPLES ....................................... OPERATION PRINCIPLE ..................................7 STATUS AND PROGRAMMING MENU & SUB-MENUS DIAGRAM ...................

  • Page 3: Specifications

    Please refer to the Replacement Parts Catalogue available online at www.refplus.com (https://refplus.com/en/parts-services/) All RefPlus products have a nameplate with a QR code that you can scan to obtain the unit’s technical pedigree as well as a list of replacement parts.

  • Page 4: Typical Wiring Diagram

    ypiCal iRing iagRam For reference only. Refer to the wiring diagram supplied with your unit. (500) (600) (100) (200) (500) (600) ECM WIRING # : Terminal Block TWIN SPEED CONTROL BOX WIRING #C : Main Contactor #H : High Speed Contactor #C1 #C2 #H2 #H3 #L1 #L2...

  • Page 5: Overall Dimensions

    veRall imensions S: 226mm (8.9”) 69.8mm (2.7”) M & L: 315mm (12.4”) nsTallaTion WARNING: Before installation or maintenance, always check to be sure that main power to system is OFF. Electrical shock can cause personal injury or death. SAFETY CONSIDERATIONS Installing, starting up, and servicing any equipment can be hazardous due to system pressures, electrical components and equipment location (elevated structures, etc.).

  • Page 6: Interface Key Descriptions

    nTeRfaCe esCRipTions ALARM KEY Lets you access the Alarm menu (some controller models may have a bell icon) PROGRAMMING KEY Lets you access the Programming menu ( on some controller models) ESCAPE KEY Returns to the Status menu or the previous menu ( on some controller models) DOWN KEY Lets you navigate down through screens and menus or lets you change the value of a field...

  • Page 7: Operation Principle

    Method 2: PID (Proportional Integrative Derivative). Pressure setpoint set by the user. Note: This method provides the smoothest and the most linear ventilation capacity variation while delivering the most precise refrigerant pressure. Method 3: Fan cycling is driven by an external signal (not supplied by RefPlus). Lower point of the pressure control band set by user.
  • Page 8 In methods 1, 3 and 4, there is a pressure control range rather than a setpoint, called the pressure control band, within which the controller will work (fan cycling) to maintain the desired refrigerant pressure. The pressure control band has a lower and upper point.
  • Page 9 HIGH- HIGH- REGULAR SPEED SPEED FANS RAMP RAMP DOWN STAGE ON at STAGE 10 STAGE 10 below RAMP DOWN RAMP UP 218.1 STAGE 9 STAGE 9 RAMP DOWN RAMP UP 227.2 STAGE 8 STAGE 8 RAMP DOWN RAMP UP 236.3 218.1 STAGE 7 STAGE 7...
  • Page 10 The modulating fan speed depends on the refrigerant pressure (RP). Below the pressure control band, the modulating fans will be OFF. When RP increases (RAMP UP), from the lower point of the pressure control band (200 PSI) to the point where the first stage of regular fans starts (227.2 PSI), the modulating fan speed increases proportionally from minimum to maximum speed.
  • Page 11 • Pressure band set to 100 PSI by user. • Modulating fan minimum speed set to 20% and maximum speed to 100% by the user. Since the lower point of the pressure control band is set to 200 PSI and the band to 100 PSI, the pressure controls band is from 200 to 300 PSI.
  • Page 12 METHOD 3 Fan cycling is driven by an external signal (not supplied by RefPlus). This method allows the user to take control of the fans through two different ways: a communication card or an analog signal (DC voltage or milliamps). This external signal gives full flexibility and is completely configurable to be adapted to the user’s possibilities.
  • Page 13 100% 0-10V 0-1V 0-20mA 4-20mA 1-9V 5-18mA 0-100% 0-100% Analog Analog Analog Analog Analog Analog communication Percentage of signal signal signal signal signal signal card cooling band for fan cycling 10.4 10.2 11.5 13.6 12.8 0V 1V 2V 3V 4V 5V 6V 7V 8V 9V Example on how you can configure 15.2 14.1...
  • Page 14 Dyn.F: 100% 5-6-7-8 Set new date 20/09/08 03032210 Band: 100.0 yy/mm/dd by REFPLUS VERS 1.0 OFFSETS UNIT STATUS OFFSET READING SETPOINTS 0 0 0 . 0 P / 3 1 7 . 5 P Units: PSI/Fahrenheit 0 0 . 0 / 052.2...

  • Page 15: Menus And Parameters

    2. Use to scroll the Programming menu and select G) VERSION INFO 3. Press . The screen will display the software version installed on the controller. In this case, the version is 1.0 CONDENSER CONTROL 03032210 by REFPLUS VERS 1.0...

  • Page 16: Status Menu

    STATUS MENU When the controller is powered ON, it shows screen 1 of the Status menu. The Status menu has 6 possible screens. Each one shows important information regarding the status of the controller, such as time and date, controller status (ON/OFF), refrigerant pressure and outside temperature, etc.
  • Page 17 Voltage Motor speed Pwr: 00839W Ai:00802mV Power Analog input Bus: 00460V CO:32801 Communication info. Bus voltage Reserved for RefPlus Cur:02325mA Amperage IGB: 077.0 ModAdd:247 Insulated-gate bipolar transistor temp. Set motor Modbus address Ins: 080.0 AiMnS: 005% Start value for analog input Ambient Temp.
  • Page 18 5. Press 6. Use to enter the ModAdd value and press to confirm your selection. NOTE: in order for the new Modbus address to apply, cycle power the disconnect switch and resume instructions here when power is back and display returns to Status screen. 7.

  • Page 19: Factory Reset Procedure

    . The display will read: ENTER FACTORY PASSWORD 0000 The screen may prompt you to enter the factory password. Please contact RefPlus to obtain your factory password. 4. Press 5. Use to enter the factory password. Note: If password is not accepted, verify that date and time are set properly.
  • Page 20 FACTORY RESET This will factory reset the unit. Are you sure? Reset WARNING! The following step will clear your settings and restore those of the factory. DO NOT perform this operation unless you want to return to the factory settings. If so, carry on with the next step; you will need to setup the controller.
  • Page 21 . The display will read: ENTER FACTORY PASSWORD 0000 The screen may prompt you to enter the factory password. Please contact RefPlus to obtain your factory password. 4. Press 5. Use to enter the factory password. Note: If password is not accepted, verify that date and time are set properly.
  • Page 22 The display will read: SYSTEM SPECIFICATIONS P-LAN: 01 FANS INFORMATION: Array length: Dynamic fans: 1ST ROW Minimum speed: 020% Maximum speed: 100% Ramp up speed: 05%/sec P-LAN indicates the controller’s P-LAN address. 8. Press 9. Using , set the Array Length (number of stages) on the condenser. Note: Since all fans in a stage are controlled by the same signal, all fans on that stage will require only one digital output on the controller.
  • Page 23 17, page 29 . • Fixed (RP Monitor): reserved for RefPlus. • Fixed RP (PID): set for methods 2 and 5. A PID logic controls the fan cycling to keep refrigerant pressure (RP)
  • Page 24 FIXED RP (PID) When controlling on Fixed RP PID (methods 2 and 5), depending on the load (which can vary), fan capacity, outside temperature and other factors related to the characteristics of the condenser, the controller will compute to determine the ventilation capacity to be used to reach a certain refrigerant pressure range, which is determined by the Setpoint and a tolerance for fan cycling (Setpoint ±...
  • Page 25 Refrigerant Pressure (RP) HP2=176.9 HP3=176.1 HP1= 175.3 Setpoint = 175 Highest pressure: HP Lowest pressure: LP cycle 1 cycle 2 cycle 3 LP3= 173 LP1= 172.2 LP2= 171.6 Time Refrigerant Pressure (RP) Fan cycling tolerance = 3.4 Setpoint = 175 Fan cycling tolerance = 3.4 Time Graph 10: Max deviation...
  • Page 26 Point C: Refrigerant pressure is now 269.3 PSI; temporary setpoint #2 is then 239.3 and the temporary pressure range is 209.3 to 269.3. Pressure remains within this new range for 60 seconds, then a new temporary setpoint can be generated. Point D: Refrigerant pressure is now 233.7 PSI;...
  • Page 27 . Td is the derivative gain for fan cycling PID control. 10. Use to set Antibump and press . Set to DISABLED unless otherwise recommended by REFPLUS. 11. Use to set Startpoint and press . Set to 000.0 unless otherwise recommended by REFPLUS.
  • Page 28 EXTERNAL CONTRL SIGNAL High speed ON + 10 PSI 320.0 BMS/CardA High speed ON at RP: 310 PSI (set to 10%) 306.7 293.3 Upper point of pressure control band (300 PSI) BMS: 0045.0 280.0 Sim: 0252.5 266.7 SCALER 253.2 X1: 0010.0 Y1: 0200.0 240.0 X2: 0090.0...
  • Page 29 Stages ON >= OFF < St6: 272.7 254.5 St7: 281.8 263.6 St8: 290.9 272.7 St9: 299.9 281.8 310.0 299.9 Follow step 14 only if an external analog signal (0-1V, 0-10V, 0-20mA, 4-20mA) is used to control the fan cycling. Select one of the analog inputs from U3 to U10 to which the analog signal will be connected.
  • Page 30 BMS PARAMETERS BMS Address: 001 Protocol: CAREL Local Speed: 19200 Baud 29. Press 30. Use to enter the BMS address, the controller’s address in a supervisory system. Press to confirm. 31. Use to enter the BMS port communication protocol. Set CAREL Local for pCOWEB and BACNET cards; set MODBUS Slave for MODBUS card.
  • Page 31 Parity: odd, even or none Word Length Stop Bits 42. Press to return to the FACTORY SETUP MENU. The display will read: FACTORY SETUP MENU ALARMS LOGGING RESET SYSTEM SPECIFICATIONS DIGITAL INPUTS 43. Use to select DIGITAL INPUTS and press to confirm.
  • Page 32 NOTE: CLOSED means a 24Vac signal is present on the digital input. Digital input 2 is mandatory. If the condenser is ON and the input is active (meaning that the “Status” is equal to the “Active if” condition), the controller starts the fan cycling according to the chosen method and settings.

  • Page 33: Delays

    DELAYS Reduce Dyn. F. spd. :005S Accelerate Dyn.F : 002S Between fans: Fan mortor min. ON:000S Fan mot curr sens:010S Factory pass en: 55. Press 56. Use to set the Reduce Dyn. F. spd. value. This is only valid for condensers with both modulating speed (ECM) and regular ON/OFF fans.

  • Page 34: Alarms Logging Reset

    Graph 15: 59. Press to confirm your selection. 60. Use to set the Between fans value. This is only valid for regular ON/OFF fans. Once the requiring unit sends the signal to start (digital input #2), depending on the refrigerant pressure, several fans (stages) could start simultaneously.
  • Page 35 This parameter defines how frequent the controller saves the DEVICES RUN HOURS, then press to confirm. Seconds per hour: Do not change (3600 by default). Setting intended for tests. Contact Refplus for more information. 81. Press to return to the FACTORY SETUP MENU. The display will read:...
  • Page 36 FACTORY SETUP MENU ALARMS LOGGING RESET SYSTEM SPECIFICATIONS DIGITAL INPUTS 82. Use to select ALARMS LOGGING RESET and press to confirm. The display will read: ALARMS LOGGING RESET Are you sure to reset the alarms logging? Reset Once an alarm is triggered, the information is saved in the controller’s permanent memory. This screen allows the user to clear the alarms logging.

  • Page 37: User Setup

    on the actual refrigerant pressure. The controller will look at the trend and generate a Simulated Pressure (sP) in order to add or remove ventilation. Ex.: if sP increases to 236.3 PSI, stage 2 will start; if sP decreases to 218.1 PSI, stage 2 will stop. The Simulated Pressure (sP) value is useful when adjusting the proportional, integrative and derivative gains when PID methods are used.

  • Page 38: Setpoints

    3. Press . The display will read: ENTER USER PASSWORD 0000 The screen may prompt you to enter the user password. 4. Press 5. Use to enter the password. User password is 8. 6. Press the to confirm your selection. The display will read: SETPOINTS Units: PSI/Fahrenheit Pressure Setpnt Scaler...
  • Page 39 one modulating fan and two regular twin-speed fans. The Setpoint is set to 200 PSI and the pressure band to 100 PSI. The high-speed of the regular twin-speed fans is set to start at 310 PSI. According to this scenario, the controller will determine the following, as shown in Graph 17: •...

  • Page 40: Main Page Return Delay

    The Max value (ex.: -25%) is calculated by the controller and indicates the maximum percentage it will allow to anticipate stages. Even if the user enters a higher than allowed percentage, the slide value will never exceed it. 13. Press , the display will read: MAIN PAGE RETURN DELAY 2Min(s).

  • Page 41: Service Menu

    3. SERVICE MENU 1. Enter the Programming menu by pressing . The display will read: PROGRAMMING MENU G>VERSION INFO A>UNIT ON/OFF B>USER SETUP 2. Use to scroll the Programming menu and select C) SERVICE MENU. 3. Press . The display will read: ENTER SERVICE PASSWORD 0000 The screen may prompt you to enter the service password.
  • Page 42 PRESS. & DYNFAN SETUP Band: 100.0P Set DynF ON press 50% ON: 209.0P OFF: 200.0P DynF ice protec: 39.2 11. Press 12. Use to enter the Band value and press to confirm. Refer to page 7 and page 8 for understanding the pressure band. 13.

  • Page 43: Clock

    4. CLOCK This menu allows you to set the present date and time. IMPORTANT: Always set the full date and time even when only modifying a single parameter. 1. Enter the Programming menu by pressing . The display will read: PROGRAMMING MENU G>VERSION INFO A>UNIT ON/OFF...

  • Page 44: Alarm History

    Alarm History This menu allows the user to view all triggered alarms (past or present). 1. Enter the Programming menu by pressing . The display will read: PROGRAMMING MENU G>VERSION INFO A>UNIT ON/OFF B>USER SETUP 2. Use to scroll the Programming menu and select E) ALARM HISTORY. 3.

  • Page 45: Alarm System

    Alarm System When the controller detects a malfunction, it triggers the corresponding alarm. If the buzzer is present in the controller or on PGD1 display, it will sound (if enable for that particular alarm) and the red light will blink. IMPORTANT: This menu allows you to reset these alarms once all issues have been solved.

  • Page 46: Switching The Condenser Control On/Off

    Switching the Condenser Control ON/OFF 1. Enter the Programming menu by pressing . The display will read: PROGRAMMING MENU G>VERSION INFO A>UNIT ON/OFF B>USER SETUP to scroll the Programming menu and select A) UNIT ON/OFF. 2. Use 3. Press The PLC may prompt you to enter the User password. Enter password following instructions on page 37. The display will read: UNIT STATUS 000sec(s)

  • Page 47: Auxiliary Display Setup

    Auxiliary Display Setup When using an auxiliary display, it must have a P-LAN address assigned and linked to the controller’s P-LAN address in order for the display to receive information from the controller. NOTE: All the devices (controllers or displays) make up the P-LAN network. Each device must have a unique P-LAN address.

  • Page 48: Controller Inputs & Outputs

    Controller Inputs & Outputs N.C. mode 1 J11 pLAN J23 FBus2 J25 BMS2 J26 FBus2 N.C. mode 1 FieldBus card BMS card Ref. Description Ref. Description POWER CONNECTOR [G(+), G0(-)] pLAN plug-in connector +Vterm: power to additional terminal Reserved +5 VREF power to ratio metric probes Universal inputs/outputs Reserved +VDC: power to active probes...
  • Page 49 ANALOG OUTPUTS Modulating fans speed signal (0-10V DC): Y1, connector J4. DIGITAL OUTPUTS: DEVICE DEVICE (Unit with (Unit without CONTACT CONNECTOR modulating fan(s)) modulating fan(s)) Alarm Buzzer Alarm Buzzer Modulating fan(s) Regular fans stage 1 Regular fans stage 1 Regular fans stage 2 Regular fans stage 2 Regular fans stage 3 Regular fans stage 3...
  • Page 50 PRECISION CONTROLLERS FOR A TROUBLE-FREE OPERATION RefPlus as a solution for making your cold room, freezer or fluid cooler management easier, more precise and more efficient: The Guardian+ Controller Family. SMART EVAPORATOR CONTROL LEAD LAG & DEFROST CONTROL FLUID COOLER & PUMP PACKAGE CONTROL...
  • Page 51 PRODUCT LINECARD CERTIFIED ISO-9001 IOM-GUARDIAN+ RC-C CONTROLLER-EN-06/22-R0 RefPlus Inc. reserves the right to make any changes in the design or USA & CANADA 1-888-816-2665 / refplus.com specifications of any product at any time without notice. 2777 Grande-Allée,Saint-Hubert, Québec,Canada,J4T 2R4 © Copyright 2022 by RefPlus Inc.

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