Guardian Controls International RCC20 Series User manual

Guardian Controls International 1
RCC20X (C5L2)
Controller for Reciprocating Compressors.
Operation and Set-up Manual
General
Guardian Rcc20X (C5L2) Controller is a self-contained unit requiring a single electrical
supply to control and monitor up to 5 reciprocating compressors, each with motor and 2
loading valves. It provides inputs for pressures, temperatures and plant faults, and mains
outputs for compressor motor and capacity control. Local digital temperature and alarm
display is provided by the Guardian SKD9 key-switch display unit, which also gives access to
all control and configuration parameters. Full RS-485 communications enables the controller
to be integrated into a Guardian Consultant network to provide data logging and alarming.
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

Guardian Controls International 2
CONTENTS
General ................................................................................................................................1
Termination and Layout.....................................................................................................3
RCC-20X ‘C5L2’ Input/Output Signals..............................................................................3
RCC-20X C5L2 Termination Wiring..................................................................................5
Compressor control...........................................................................................................6
Condenser control.............................................................................................................7
Getting Started....................................................................................................................8
Hardware configuration checks.........................................................................................8
SKD.9 Display unit operation...........................................................................................9
Configure unit address....................................................................................................10
Enter Passcode PP05 for normal changes.....................................................................10
Select Address................................................................................................................10
RS485 Communications .................................................................................................10
OPERATION ......................................................................................................................11
SD9 DISPLAY INDICATIONS............................................................................................11
Compressor Displays......................................................................................................11
TRIPS AND ALARMS........................................................................................................13
PACK AND COMPRESSOR SAFETY TRIPS ................................................................13
ALARMS .........................................................................................................................14
MODE CHANGE Compressors.......................................................................................15
GLOBAL RS485 COMMANDS........................................................................................15
CONDENSER FAN DISPLAY............................................................................................16
HIGH DISCHARGE PRESSURE....................................................................................16
FAN OVERLOAD TRIPS ................................................................................................16
MODE CHANGE CONDENSERS...................................................................................17
FAN CAPACITY MANUAL..............................................................................................17
USEFUL BUTTON SEQUENCES......................................................................................18
Reset ALARM or TRIP....................................................................................................18
Change suction control setpoint and differential.............................................................18
Check Unit Model............................................................................................................18
Select Stub, Case No and Address.................................................................................18
SETUP OPERATION.............................................................................19
Setup Functions (Normal) passcode 05 .........................................................................20
PP05 Menu.........................................................................................................................20
Compressors...................................................................................................................20
Condenser Fans..............................................................................................................20
CONTROL PARAMETER DEFINITIONS...........................................................................21
Configure the controller?.................................................................................................21
Compressor Control?......................................................................................................22
Test control outputs?.......................................................................................................27
Condenser Control?........................................................................................................27
Pressure transducer scaling?..........................................................................................30
COMMUNICATIONS..............................................................................31
SETUP / COMMISSIONING PARAMETERS.........................................32
PP05 Normal Menu Compressor Settings......................................................................32
PP05 Normal Menu Condenser Settings........................................................................34
PP11 Menu - Settings Level 2.........................................................................................35
INDEX ....................................................................................................36
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

Guardian Controls International 3
Termination and Layout
RCC-20X ‘C5L2’ Input/Output Signals
C5L2 Main Unit
Analogue Inputs Terminal
P1 LP 23-/24+ Suction Pressure -1 to 24 bar
P2 HP 25-/26+ Discharge Pressure -1 to 24 bar
P3 SATP 27-/28+ Satellite Pressure -1 to 24 bar
P4 KWH 31/32 Kilo-Watt Hour Pulse
Analogue Inputs Terminal
Not used 4/5
Not used 4/6
Not used 4/7
Not used 4/8
Pack Suction 4/9 Suction temperature Degrees C.0 to 150
Pack Discharge 4/10 Discharge temperature Degrees C.0 to 150
Mains Input 230vac / 24vac
Phase fail 18 230vac / 24vac
Relay Outputs 230VAC 3 amp. Maximum Accumulative Current 10 amp.
RLY1 11 Compressor 1 Motor (50%) 230vac
RLY2 12 Compressor 1 Capacity (75%) 230vac
RLY3 13 Compressor 1 Capacity (100%) 230vac
RLY4 14 Compressor 2 Motor (50%) 230vac
RLY5 15 Compressor 2 Capacity (75%) 230vac
RLY6 16 Compressor 2 Capacity (100%) 230vac
SSR7 17 System Healthy 230vac
AC Supply 19 Neutral 230vac
20 Line 230vac
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C5L2 Extention Unit 1
Digital Inputs Terminal
Common Neutral 1
C1 Running /Trip 2 Compressor 1 input 230vac
C2 Running /Trip 3 Compressor 2 input 230vac
C3 Running/ Trip 4 Compressor 3 input 230vac
Not Used 5 230vac
Oil Level 6 Pack oil level alarm/trip 230vac
HP safety trip 7 High pressure safety trip 230vac
LL level alarm 8 Liquid level low alarm 230vac
CFAN OVERLOAD 9 Condenser fan overload alarm 230vac
Not used 18 230vac
Relay Outputs 230 V AC 3 amp. Maximum Accumulative Current 10 amp.
RLY1 11 Compressor 3 Motor (50%) 230vac
RLY2 12 Compressor 3 Capacity (75%) 230vac
RLY3 13 Compressor 3 Capacity (100%) 230vac
RLY4 14 Condenser Fan 1 230vac
RLY5 15 Condenser Fan 2 230vac
RLY6 16 Condenser Fan 3 230vac
SSR7 17 Condenser Fan 4 230vac
AC Supply 19 Neutral 230vac
20 Line 230vac
C5L2 Extention Unit 2
Digital Inputs Terminal
Common Neutral 1
C4 Running 2 Compressor 4 running 230vac
C5 Running 3 Compressor 5 running 230vac
Not Used 4
Not Used 5
Not Used 6
Not Used 7
Not Used 8
Not Used 9
Not Used 18
Relay Outputs 230 AC 3 amp. Maximum Accumulative Current 10 amp.
RLY1 11 Compressor 4 Motor (50%) 230vac
RLY2 12 Compressor 4 Capacity (75%) 230vac
RLY3 13 Compressor 4 Capacity (100%) 230vac
RLY4 14 Compressor 5 Motor (50%) 230vac
RLY5 15 Compressor 5 Capacity (75%) 230vac
RLY6 16 Compressor 5 Capacity (100%) 230vac
SSR7 17 Not Used 230vac
AC Supply 19 Neutral 230vac
20 Line 230vac
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Guardian Controls International 5Guardian Controls International 5
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06
RCC-20X C5L2 Termination Wiring.
RS485 HIGHWAY
CABLE TO EXTENSION UNIT
16-X Extension
NOT AVAILABLE
10
9
8
7
6
NOT USED
C3 RUNNING / TRIP
C2 RUNNING /TRIP
C1 RUNNING /TRIP
NEUTRAL
5
4
3
2
1
DISCHARGE TEMP
SUCTION TEMP
NOT USED
NOT USED
NOT USED
NOT USED
5
27
10
9
KWH
DIG 4-20mA
SWP4
SWP3
KWH
AMP
LEV
8
7
6
32
31
30
29
28
+
A
OV DC
B
SUCT
FAN
DISC
4
3
E
2
26
-
+
25
24
-
+
0V
22
23
-
+
21
1
B
A
E
FAN 3
FAN 4
NOT USED
20
SSR7
19
18
17
16
230VAC Line
230VAC Neutral
FAN 2
FAN 1
RLY5
RLY6
RLY4
RLY3
15
14
13
RLY2
RLY1
12
11
15
PHASE FAIL
SYSTEM HEALTHY
20
19
TRIPS
SAFETY
SSR7
RLY6
18
17
16
C1 CAPACITY 75%
C1 MOTOR 50%
RLY5
RLY4
RLY3
14
13
12
RLY2
RLY1
11
SERIAL KEYSWITCH DISPLAY
MG0411
G
-
-
+4-20mA
+
+
-
4-20mA
4-20mA
C5L2
C1 CAPACITY 100%
C2 MOTOR 50%
C2 CAPACITY 75%
C2 CAPACITY 100%
C3 CAPACITY 75%
C3 MOTOR 50%
C3 CAPACITY 100%
OIL LEVEL TRIP
HP SAFETY TRIP
LL LEVEL TRIP
CFAN OVERLOAD
SELECT SOFF FOR CAPACITY OFF DURING START UP
SELECT SON FOR CAPACITY ON DURING START UP
SELECT CPOS FOR LOADING
SELECT CNEG FOR UNLOADING
WITH OPTO-ISOLATED INPUT
OPTIONAL
0-10V DC OUTPUT
FAN SPEED INVERTER
+
_
RCC-20
-1 to 24 bar
-1 to 24 bar
SUCTION PRESSURE
DISCHARGE PRESSURE
P1 LP
SATELITE PRESSURE
-1 to 24 bar
P2 H.P
P3 SATP
P4 KWH PULSE
16-X Extension
NOT AVAILABLE
10
9
8
7
6
NOT USED
NOT USED
C5 RUNNING / TRIP
C4 RUNNING / TRIP
NEUTRAL
5
4
3
2
1
C5 CAPACITY 100%
NOT USED
NOT USED
20
SSR7
19
18
17
16
C5 CAPACITY 75%
C5 MOTOR 50%
RLY5
RLY6
RLY4
RLY3
15
14
13
RLY2
RLY1
12
11
C4 CAPACITY 75%
C4 MOTOR 50%
C4 CAPACITY 100%
NOT USED
NOT USED
NOT USED
NOT USED
MODIFIED
230VAC Neutral
230VAC Line
SELECT dtF0 FOR COMPRESSOR RUNNING SIGNALS
SELECT dtF1 FOR COMPRESSOR TRIP SIGNALS
1
2
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GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06
Controller function.
This description is for the C5L2, which controls compressors and condenser fans.
Compressor control.
Compressors are staged on and off in response to changes in the measured suction
pressure. Which compressor is started or stopped depends on the following :-
Compressor Start.
1. Suction pressure is above the control set-point plus dead band. (See Page 22).
2. Stage up delay has elapsed. (See Page 24).
3. Compressor not at tripped status. (See Page 14)
4. Starts per hour timer, (anti-recycle timer), has elapsed.(See Page 24)
5. Delay after stop has elapsed. (See Page 24).
6. Compressor with the lowest run hours is then selected to start.
7. Stage up delay is reset.
Compressor increase capacity.
1. Suction pressure is above the control set-point plus dead band. (See Page 22).
2. Capacity loading delay has elapsed. (See page 24).
3. Next capacity loading output is used according to polarity selected.(See Page 22)
4. Capacity loading delay is reset.
Compressor decrease capacity.
1. Suction pressure is below the control set-point minus dead band. (See Page 22).
2. Capacity loading delay has elapsed. (See page 24).
3. Next capacity output is used according to polarity selected.(See Page 22)
4. Capacity loading delay is reset.
Compressor Stop.
1. Suction pressure is below the control set-point minus dead band. (See Page 22).
2. Maximum number of unloaded compressors has been reached(See Page 22)
3. Stage down delay has elapsed.(See Page 24)
4. Compressor with the longest run hours and shortest re-cycle delay is stopped.
5. Stage down delay is reset.
Compressor Standby
Any compressor .in the pack may be designated as the standby compressor 'Sb'.
The standby compressor only runs if one of the other compressors in the pack has tripped.
Compressor Enabled, Disabled, Not fitted
Any compressor .in the pack may be designated as disabled or not fitted.
Only 'Enabled' compressors run.

Guardian Controls International 7
Condenser control.
ans Start. sure is above control set-point plus dead band. (See Page 28).
s elapsed. (See Page 28).
This is description is for ‘Linear’ fan control.
F 1. Discharge pres
2. Stage delay ha
3. Fan is started in numerical order.
4. Stage delay is reset.
Fans Stop.
1. Discharge pressure is below control set-point minus dead band. (See Page 22).
2. Stage delay has elapsed. (See Page 28).
3. Fan is stopped in last on first off order.
4. Stage delay is reset.
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Guardian Controls International 8
Getting Started
uardi with
•ULTIMATE FLEXIBILITY
This m n designers, installers, service mechanics and supermarket
with the necessary information to achieve the above objectives.
All use
perform their design, commissioning, maintenance or operating functions.
a) 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
essential.
) The shorthand used in the following chapters for concisely expressing button pressing
and selection sequences to do all this set-up needs to be understood.
) Mains power input voltage and hardware switch and link option selections (if any are
required) must correspond to the selected unit model configuration.
d) Since each controller can be configured in a number of different ways to perform flexible
refrigeration control then an understanding of how to find out what unit model is currently
selected, what it does and how it is connected, is also necessary.
Hardware configuration checks.
Prior to switching on the GUARDIAN controller check that the hardware unit is the correct
type for the incoming mains voltage
When satisfied that the correct type of controller is available then the following checks should
be made prior to controller installation or replacement
a) Ensure mains supply is wired correctly to the appropriate TERMINAL WIRING drawing for
the model selected.
b) Ensure that any transducer selector switches specified on the TERMINAL WIRING
diagram are in the correct state.
c) Ensure any shorting link selector pins specified on the TERMINAL WIRING diagram are
correctly fitted.
d) Ensure that probes are wired to the terminal WIRING DIAGRAM and the correct type of
thermistor or pressure transducer probes are fitted.
e) The SKD.9 Keypad/display unit is fitted correctly in its 6-way telephone socket.
f) The RS485 highway connections (if required) are wired to the correct terminals and the
screen drain wire is continuous to earth.
G an Controllers provide refrigeration engineers
•ASSURED MONITORING
•RELIABLE ALARMS
anual provides refrigeratio
personnel
rs require to know a few basic facts about this controller before successfully starting to
b
c
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

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SKD.9 Display unit operation. splay unit to be plugged into the
lephone jack socket in the controller before any settings can be changed.
The SKD.9 is connected to the GUARDIAN controller via a 6-core telephone cable.
The SKD.9 Keyswitch/Display comprises a plastic enclosure housing a PCB with four
membrane pushbuttons, four LED displays and a 2-position Keyswitch.
GUARDIAN controllers require a SKD.9 Keyswitch Di
te
@in sequence.
?
se
Button operation shorthand.
subsequent displays will be shown in this handbook as
EX
Pre which then displays AUTO
Th ode to OFF and displays -OFF
Press ‘next’ Auto ‘enter’.
rEt= =-17
means the display alternates between the value identifier tag and the latest value.
rEt= =oc= FAIL
means the display alternately flashes between the value identifier tag (return air
temperature), the measured value ( open circuit ) and the alarm or trip message.
SKD.9 buttons have the following functions when pressed:-
’next’ button displays next value or menu selection
/’raise’ button raises a menu settings value or menu item selection.
<’lower’ button decreases a menu settings value or item selection.
’accept’ or ‘enter’ button accepts any alarm and is used for entering a menu
lection or settings value data entry .
The two position keyswitch is not used
To assist in easy set-up of control setpoints, delays, timers and other configuration settings,
the sequence of button presses and
below:
ii) A button symbol means press that button
iii) A display box shows the result of the last button press on the SKD.9 display.
AMPLES
@ Auto @ -OFF ? -OFF is shorthand for
ss ‘next’ button
Press ‘next’ button which then displays OFF
en press ‘enter’ button which changes the control m
@:@ Auto ?
repeatedly until is displayed then press
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Guardian Controls International 10
Configure unit address.
Enter Passcode PP05 for normal changes
Before any permanent change of controller settings are made then the correct entry of the
appropriate passcode is necessary.
Most normal system settings require entry of passcode PP05
@:@ SEt= ? PP00 /:/ PP05 ?
Press ‘next’ repeatedly until SEt is displayed then press ‘enter’. PP00 is displayed.
Press ‘raise’ repeatedly until PP05 is displayed and then press ‘enter’.
Select Address
.g. set-up unit for address 180.5
005
TANT PC for central alarm monitoring and
n be sent to
rther details
e
Enter Passcode as button sequence as above
@:@ Unit ?
@:@ A001 /:/ A180 ? A180
@ d005 ? d
@:@ End= ? =-26
RS485 Communications
When the correct highway address has been entered as above then the controller can
communicate with the Guardian CONSUL
temperature display. Control setpoints, defrost times and alarm limits may the
he controller from the PC rather than using the SKD9 Keyswitch display. For fut
see page 31
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Guardian Controls International 11
OPERATION
The SKD.9 Keyswitch display provides a display at the compressors of pack pressures,
asscode protected setup of controller setpoints, timers and limits.
number of compressors running or tripped etc.
Display of other measured values by pressing ’next’ @button, the values displayed depend
on the unit model selected.
P
next raise lower enter keyswitch
IONS
The following displays are available by repeatedly pressing @.Value displays are
alternated with an identification Tag (ie 'Suct') which is displayed for a quarter time:-
A e gau
Ta Valu
Suct =2 3b n pressure (-1 to 24barG)
25 Total pack amps
uP ==3.5
S-dn ==0.3 Stage down timer count
Auto Pack Auto control mode (press 'accept')
OFF= Pack OFF control mode (press 'accept')
hAnd HANd control mode (press 'accept') (enables
raise/lower buttons)
CPrS 1=11 Compressor motors running status
dELy ==11 Motor Timeout Delay status
Crun ==11 Motor Running / trip Input status
SD9 DISPLAY INDICAT
Compressor Displays
ll pressur are in bar ge
g e
.Suctio
LoAd =1
CAP= =100 Total Pack Capacity % (0 to 100 %) (capacity
raise/lower operative in HAnd control mode)
S- Stage up timer count
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Guardian Controls International 12
triP ==11 Motor trip status
Liquid level % if fitted
=St= =-36 n tem rature if ‘STSH’
Equivalent Suction temperature if ‘STSH’
=SH= ===4 Suction superheat temperature if ‘STSH’
LOOP ==74 Compressor VSD Loop output speed 0-100% if
Fan speed SPd selected
CSEt Request compressor parameter change
ss 'accept' to display discharge
AYS MAY ALSO BE SELECTED BY PRESSING 'Lower' with
'Suct' on display
LEuI ==35
Suctio pe
=Et= =-38
FAnS Pre
CONDENSER FAN DISPL
COMPRESSOR SETTINGS MAY ALSO BE SELECTED BY PRESSING 'Raise' with 'Suct'
on display
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

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Default Displays
The default suction pres
Suct sure display =2.3 Suction pressure (-1 to 24barG)
eplaced by
OFF
And
=PC= FAiL if RS485 comms watchdog fail
ALARMS
COMPRESSOR SAFETY TRIPS
Pack trips always de-energise the system healthy output, stops all motors and de-energises
the loading valve and fan relays.
Compressor Motor trips only stop the appropriate compressor.
ALL Trips are RESET locally by pressing the 'enter' button.
The last safety trip input detected is automatically displayed with a flashing alternative 'triP'
message.
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
diSc =oc= FAiL Discharge pressure open circuit
Suct 10.5 triP Suction pressure high trip
diSc 18.6 triP Discharge pressure high trip
=SH= -0.5 triP Superheat low trip
is during AUTO or restart sometimes r
8888 During restart
C5L2 Unit model configuration selected
u1.0A (Software version)
-If unit selected OFF
HIf unit selected hand control
TRIPS AND
PACK AND
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Guardian Controls International 14
Digital Trips
Compressor one tripped. This is a result of the run
t being present after the compressor has
C-2 SFtY
C-3 SFtY
for all other compressors
e most recent
compressor to have tripped
C-4 SFtY
C-5 SFtY
System Healthy Output pre nal inputs detect an
the System Healthy output is removed.
the suction pressure, amps liquid level or superheat values go outside the high or low
ow alarm
uct 10.8b Hi= Suction Pressure High alarm
Motor Load High alarm
Liquid level Low alarm
SH= ===1 ==Lo Superheat Low alarm
alarm
ps all compressors).
Fan= Alr= Condenser Fan Overload Alarm.
Individual compressor trips:-
C-1 SFtY signal no
been started..
A similar display is used
on the controller with just the compressor number
changing. It always displays th
If a compressor has been selected as Standby
CnSb then this will be run after any trip
IF a pack Safety trip occ
open circuit FAIL or exceed trip limits then
urs or suction ssure or discharge pressure sig
ALARMS
Analogue Alarms
If
alarm limits then the appropriate value is displayed with a flashing alternative 'Hi' or 'Lo'
alarm message.
Suct -0.8b =Lo Suction Pressure L
S
LoAd =120 Hi==
LeuL ==15 ==Lo
=
Digital Alarms
Digital alarm messages include:-
Lo-A Leu= Digital input Low level liquid
bdis Alr= Burst disc alarm.
PhAs Alr= Phase fail alarm(Sto
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Guardian Controls International 15
PC-FAIL ALARM
the RCC20 unit is in 'Auto' mode and a valid status request has not been received for 60
ay then a Watchdog timer 'PC/FAIL' message is displayed.
his alarm is reset if 485 communications are restored or the AGT/SYS5/Locl/nonE is set to
ettings.
s watchdog fail
pressors
pack mode sel then pressing 'enter'
o the new select sor control
n suction pressure
oFF= -OFF = pack control stopped (standby operation)
hAnd = pack control in local manual operation
Pack Capacity Manual
ck mode selected to HANd, the pack capacity can be increased or decreased by
pressing 'raise' or 'lower' buttons when the pack capacity is on display.
it tings are 'CoFF' then
sent to all case controllers on the same section of
a
s 'reset' is pressed or when
If
seconds via the RS485 highw
T
'LocL' or 'nonE' in unit s
=PC= FAIL if RS485 comm
MODE CHANGE Com
Pressing 'next' until the ections are on display and
changes the pack mode t
Auto ion displayed.
AUTO pack control mode with compres
o
hAnd
With the pa
@:@ HAnd ?
@:@ CAP= ==50 /:/ ==75 ?
GLOBAL RS485 COMMANDS
IF all compressors are tripped or the un
a GLOBAL RS485 'OFF'command is is in 'OFF' mode and Trip Set
RS485 Highway to prevent liquid flood b
ck.
A GLOBAL RS485 'AUTO' command is
control mode is selected 'AUTO'. ent on restart, when trip
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

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CONDENSER FAN DISPLAY
The following displays are available by repeatedly pressing the 'next' button:-
diSc 14.5 Discharge pressure
(No. of fans running changed by raise/lower
buttons if HANd selected)
Fan stage delay timer (secs)
oFF=
hAnd (enables raise/lower buttons)
triP
LooP ==66 analog output 0-100% if applicable for variable
speed Fans
Request parameter change for FANS
S LA AY ALSO BE SELECTED BY PRESSING 'Lower' with 'Disc'
isplay
FAN OVERLOAD TRIPS
Any fan overload trip causes the default display to alternate the
failed FAN no. with a 'triP' message.
FAn3 triP fan 3 trip input closed
FAnS ===3 Number of fans running
dELY ==13
Auto Auto control mode (press 'accept')
OFF control mode (press 'accept')
Hand control mode (press 'accept')
11== Fan trip status
FSEt (press accept & raise to PP05)
eturn to compressor displayR
COMPRES
on display OR DISP YS M
CONDENSER
dSETTINGS MAY ALSO BE SELECTED BY PRESSING 'Raise' with 'Disc' on
HIGH DISCHARGE PRESSURE
If the discharge pressure goes outside the high alarm limit then the pressure value is
displayed with a flashing alternative 'Hi' alarm message. The compressors are automatically
unloaded to reduce the discharge pressure.
DiSc 10.8b ==Hi Discharge Pressure High alarm
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MODE CHANGE CONDENSERS
Pressing 'next' until the condenser mode selections are on display and then pressing 'enter'
hanges the condenser mode to the new selection displayed.
Auto AUTO fan control mode with
scharge pressure
OFF=
MAN AL
e se cted to 'HANd increased or
/:
maximum of seven fan stages (fans or valves) are sequenced up or down.
c
Auto compressor control on di
Fan control stopped
hAnd Fan control in local manual operation
FAN CAPACITY U
With the fan mod le ', the condenser capacity can be
decreased by pressing 'raise' or 'lower' buttons when the fan capacity is on display.
@:@ HAnd ?
@:@ CAP= ==50 / ==75 ?
A
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

Guardian Controls International 18
he following button sequences should prove useful during normal service operation
Reset ALARM or TRI
iFF triP 2
Change suction control setpoint and differential
@:@ SEt= ? PP00 /:/ PP05 ?
cd02 ? cd02
=2.6b
@:@ SEt= ? PP00 /:/ PP05 ?
@:@ Unit ? 3PAC 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
USEFUL BUTTON SEQUENCES
T
P
d ? = .4b
RESET
@:@ cprs ?
@:@ c2.0b /:/ c2.5b ? c2.5b
@
@:@
cd01
End=
/:/
?
Check Unit Model
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

Guardian Controls International 19
SETUP OPERATION
,
isplay panel.
o co 0 is
9 or PP11 must be first selected using /
e bu attempted
re
so Settings Level 2
FSEt S P
PP00 Set passcode PP05, PP09 or
PP11 by using the <and /
pushbuttons
55 P
PP11 menu page 30
PP05 Condenser menu page 20
Setup operation lasts for a maximum of 5 minutes after being activated by pressing, ?
with CSEt or FSEt on the d
On entry t Setup pass de PP0 displayed.
To change any settings passcode PP05, PP0
and ?pushbuttons.
c is red vaIf the corre
changes a t passcode ignored. not ente then setup lues may b displayed t any
Compres rs Condenser Fans
CSEt C Et ress ?
PP00 PP00
PP0 ?PP0 ?P 11
Press ?
PP05 Compressor menu page 20
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06

Guardian Controls International 20
Setup Functions (Normal) passcode 05
P05 Menu
ing PP05 Menu selections:-
Unit Unit model setup RCC-20
CPrS Compressor pressure control setup
Page 22
Compressor delay timers
Page 24
Suc la
Page 25
Sup ui
Pag
Trip triP Trip inputs and cont
Page 26
om
oad LOAd Amps high alarm
Page 26
est tESt age 27
nd End= tion pressure display
ondenser Fans
ond Cond Condenser configuration
Page 27
FAnS Fan control settings
Page 28
Delay dELY Fan control delays
Page 29
Fanp FAnP Fan pressure Alarm Limits
Page29
Loop LooP Fan inverter Speed Control settings
Page 29
End End= Return to condenser pressure display
P
Press @to sequence through the follow
Press ?to select the displayed menu
Compressors
Unit Page 21
CPRS
Delay dELY
Suction Suct tion pressure a rm levels
Levels LEuL erheat and Liq
e 25 d Alarm levels
rol
Compressor use CusE C
Page 26
pressor use
L
TForce relays on/off
P
EReturn to suc
C
C
Fans
GUARDIAN Rcc20X ( C5L2) issue v1.0b 14/08/06