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GUARDIAN
Reciprocating Compressor Controller
for coldstores and supermarkets
• Suction pressure setpoint control of up 8 uneven/even compressors
• Compressor monitor with capacity, pressure & hours run displays
• Alarm, trip & load monitoring
• Local panel operation & setup of timers, limits and configuration
• Remote RS485 monitoring and setup
Operation and Setup Manual
The GUARDIAN RCC-12 Reciprocating Compressor Controller provides suction pressure
setpoint control and alarm monitoring for up to 8 even or uneven size compressors.
The controller communicates with the GUARDIAN Autograph Terminal and the Woodley
System 5 which provide remote central alarm monitoring, data recording and graphs.
Local temperature displays and modification of all defrost times, alarm and control settings is
available when the unit is connected to the optional GUARDIAN SKD-9 Keyswitch display.
GUARDIAN RCC-12
RCC-12
GUARDIAN
Tel. +44 (0) 1270 760599
Fax. +44 (0) 1270 766804
Email:
sales@Guardian-controls.com
www.Guardian-controls.com
Page 1
Issue vE-1.2A 03/08/00
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Summary of Contents for Guardian RCC-12
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Page 1: Guardian Rcc-12
System 5 which provide remote central alarm monitoring, data recording and graphs. Local temperature displays and modification of all defrost times, alarm and control settings is available when the unit is connected to the optional GUARDIAN SKD-9 Keyswitch display. GUARDIAN Tel. -
Page 2: Table Of Contents
Available unit models (RCC-12) ..................6 GENERAL SPECIFICATION ..................... 6 RCC-12 ‘6PAC’ and ‘8PAC’ Input/Output Signals............6 RCC.12 6PAC........................7 RCC-12 Termination Wiring - ‘6PAC’ model selection ..........7 RCC.12 8PAC........................8 RCC-12 Termination Wiring - ‘8PAC’ model selection ..........8 OPERATION....................... 9 DISPLAY INDICATIONS.................... -
Page 3: Getting Started
All GUARDIAN controllers need to be set up with a unit model selection and other basic settings for setpoints, timers and addresses. All these settings need to be done using the SKD.9 Keyswitch Display, so the understanding of the button operation of this unit is... -
Page 4: Button Operation Shorthand
( open circuit ) and the alarm or trip message. HARDWARE CONFIGURATION CHECKS Prior to switching on the GUARDIAN controller check that the hardware unit is the correct type for the incoming mains voltage Models with BLUE labels and suffix ‘L’... -
Page 5: Configure Unit Model, System No & Address
RS485 Communications When the correct system number, case/compressor number and highway address have been entered as above then the controller can communicate with the GUARDIAN AutoGraph Terminal PC for central alarm monitoring and temperature display. Control setpoints, defrost times and alarm limits may then be sent to the controller from the PC rather than using the SKD9 Keyswitch display. -
Page 6: Unit Models
Operation 0 to 55ºC Approx. dimensions Width 70 x length 100 x height off rail 110mm. The RCC-12 controller is housed in a DIN rail mounting enclosure with 20 screw clamp connectors. RCC-12 ‘6PAC’ and ‘8PAC’ Input/Output Signals 6PAC 8PAC... -
Page 7: Rcc.12 6Pac
Page 7 RCC.12 6PAC RCC-12 Termination Wiring - ‘6PAC’ model selection Compressor Control GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 8: Rcc.12 8Pac
Page 8 RCC.12 8PAC RCC-12 Termination Wiring - ‘8PAC’ model selection Compressor Control GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 9: Operation
The keyswitch. Is not used on the RCC12 Passcode protected setup of controller setpoints, timers and limits. Alarms and trips are reset by pressing accept next raise lower enter keyswitch GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 10: Display Indications
=1== Compressor anti-short cycle delay timing Crun 1=11 Compressor run signal received triP ==11 Motor trip status CSEt Request compressor parameter change COMPRESSOR SETTINGS MAY ALSO BE SELECTED BY PRESSING 'Raise' with 'Suct' display GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 11: Default Displays
The 'next' button may always be used to view other displays. Trip messages displayed depend on the unit model and the configuration selected. Analogue Trips Suct =oc= FAIL Suction pressure open circuit (6PAC or 8PAC) Suct 10.5 triP Suction pressure high trip GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 12: Alarms
Auto AUTO pack control mode with compressor control on suction pressure oFF= -OFF = pack control stopped - (standby operation) hAnd hAnd = pack control in local manual operation GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 13: Pack Capacity Manual
A GLOBAL RS485 'AUTO' command is sent on restart, when trip 'reset' is pressed or when control mode is selected 'AUTO'. A GLOBAL RS485 TIME synchronisation command is sent to all case controllers twice per day if Agt/SYS5/Locl/nonE protocol selected is 'LocL' GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 14: Useful Button Sequences
This unit model is ’3PAC’ End= =2.6b Select Stub, Case No and Address e.g. setup unit for system 60, case 1, at address 180 SEt= PP00 /:/ PP05 unit Sn01 Sn60 Sn60 Cn01 Cn01 A001 A180 A180 End/ =2.6b GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 15: Setup Operation
Compressors Settings Level 2 CSEt CSEt Press PP00 PP00 Set passcode PP05, PP09 or PP11 by using the < pushbuttons PP05 PP11 Press PP11 menu page 21 PP05 Compressor menu page 16 GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 16: Setup Functions (Normal) Passcode 05
Setup Functions (Normal) passcode 05 PP05 Menu Press to sequence through the following PP05 Menu selections:- Press to select the displayed menu Compressors Unit Unit Unit model setup RCC-12 Page 17 CPrS CPRS Compressor setup Page 18 dELY Delay Compressor delay timers... -
Page 17: Compressor Settings
System number nn = 1 - 255 Annn Monitor Address nnn = 1 - 255 RCC-12 units require 12 addresses in sequence YYYY Comms protocol YYYY = Agt - Autograph terminal PC SYS5 - Woodley Sys 5 With 12 addresses... - Page 18 Sun.n Stage up delay n.n = 0.2 - 9.9 mins Sdn.n Stage down delay n.n = 0.2 - 9.9 mins SPnn Start Period delay n.n = 0 - 60 seconds. Time delay for run input. GUARDIAN RCC-12 Issue vE-1.2A 03/08/00...
- Page 19 Press to change the settings ? ? ? ? Press to accept the settings ntc1 Number of trip Always for RCC-12 inputs/compressor Cyyy GLOBAL-RS485 CoFF= Cases OFF on highway section command action after CnoA= Cases no Action on trip all compressors...
- Page 20 2=on Relay R2 Compressor 2 7OFF 7=on Relay R7 System Healthy A=on AoFF Extension relay 1 Compressor 7 b=on boFF Extension relay 1 Compressor 8 End= Exit settings change and return to default compressor display GUARDIAN RCC-12 Issue vE-1.2A 03/08/00...
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Page 21: Pp11 Menu - Settings Level 2
4ma value bar gauge Hnn.n 20ma value bar gauge CLrH Press to sequence through the Setup selections CLrH CLrH CLrH CLrH Press to clear all compressor hours run End= Exit settings change Return to suction pressure display GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 22: Communications
Communication commands and replies are checked for parity and block length and automatically re-transmit if errors are detected. Each GUARDIAN controller has a unique unit number address UU/u which is used to select the appropriate unit for interrogation or modification. -
Page 23: Consultant Displays
Page 23 CONSULTANT DISPLAYS GUARDIAN RCC-12 Issue vE-1.2A 03/08/00... -
Page 24: Setup / Commissioning Parameters
System 5 or 6 system set the pack address to 2 less than the Woodley address) Monitor Comms Protocol Alrn Agt= - Guardian Autograph terminal SYS5 -Woodley Sys 5 with 12 addresses SYS6 - Woodley Sys 5 with only 1... - Page 25 GUARDIAN Electronics Ltd unit ACTUAL Default Min. Max. setting setting setting settings CPrS Pack suction control setpoint c 0.0 c-0.6 c5.0 Control deadband db0.1 db0.1 db1.0 Satellite compressor selection noSC noSC SAtC Loading valve polarity Lneg Lneg LPoS Fast response deadband Fb0.1...
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Page 26: Pp11 Menu - Settings Level 2
GUARDIAN Electronics Ltd PP11 Menu - Settings Level 2 unit ACTUAL Default Min. Max. setting setting setting settings rtc= Real Time Clock Real time hours rh00 rh00 rh23 Real time minutes mins rt00 rt00 rt59 SCAL Pressure Transducer Range Setting Pressure Transducer Low (4.0 mAmp) -
Page 27: Index
Contents ..........1 rtc ............21 Digital Alarms ........12 SCAL ..........21 Enter Passcode PP05......5 GENERAL SPECIFICATION ....6 RCC-12 Termination Wiring - ‘6PAC’ Getting Started ........3 model selection........7 GLOBAL RS485 COMMANDS ....13 RCC-12 Termination Wiring - ‘8PAC’ HARDWARE CONFIGURATION model selection........8 CHECKS ..........4...
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