nano LINE
200NANO4CK13 / 14
PEGO S.r.l.
Via Piacentina, 6/b - 45030 - ROVIGO
Tel : +39(0)425 762906 - Fax: +39(0)425 762905
www.pego.it - e-mail: [email protected]
200NANO4CK13-14_01-19_ITA_ENG # Rev.01-19 # 25/03/2019
MANUAL DEFROSTING ACTIVATION
To activate defrosting simply press the DOWN key for more than 3
seconds; this activates the heating elements relay. Defrosting is not
activated if the appropriate conditions are not present (end-of-
defrosting temperature (d21 or d22) set lower than the temperature
read by the evaporator probe). Defrosting terminates when the end-of
defrosting temperature (d21 or d22) is reached or for a maximum
defrosting time (d31 or d32) or by manually forced end-of-defrosting
(end-of-defrosting key or digital input).
MANUALLY FORCED END OF CURRENT DEFROSTING
Pressing the DOWN key for 3 seconds during defrosting forces the
end of the current defrosting. In the case of manual end-of-
defrosting, dripping is also excluded.
HOT GAS DEFROSTING
Set the parameter d1 = 1 or 2 for the management of inversion
defrost cycle. During the entire defrosting process the compressor
and defrost relays are activated. In this case, you can not set defrost
in succession, dd2 is forced to 0. During dripping (d7) the
compressor stops and, if d1=2, the defrost relays remain activated
in order to ensure the ignition of the resistances of the basins. If
d1=2 it may be necessary to add external electromechanical
components for proper control of the solenoid valves.
For a correct control of the system, the installer must use the
defrost output which must allow the opening of the inversion cycle
electrovalve and closing of the liquid electrovalve. For capillary
systems (without thermostatic valve) it is sufficient to control the
inversion cycle electrovalve using the defrost relay command.
HEATER DEFROST BY TIME WITH TEMPERATURE CONTROL
Set the parameter d1=3 for the management of heater defrost by
time with temperature control. During the defrost the outputs are
activated when the evaporator’s temperatures are lower than d21
or d22. Defrost stops after d31 or d32 minutes. It allows energy
saving and a better defrost process.
AMBIENT TEMPERATURE DISPLAY DURING AND AFTER
DEFROSTING
During defrosting and for a minute following the end of defrosting,
the display continues to display the last ambient temperature value
read before start of defrosting.
RS-485 CONNECTION
Connection to a RS485 network must be chain type, avoiding star
connections and observing A and B polarity. It is advisable to use
BELDEN 8762 cables. The configuration of the device in the
TeleNET program is performed by entering the module name such
as “Expert Nano4CK rel.3 or higher” and assigning to it the same
network address entered in the variable Ad. For a Modbus-RTU
network connection and for details on the protocols of these
devices, refer to the manual “MODBUS-RTU_EXP_DIN_NANO4CK”
which can be downloaded from our internet site: www.pego.it.
HACCP ALARM MANAGEMENT
With ambient probe temperature ≤ A1 , after the Ald time, the EL
low temperature alarm is activated.
With ambient probe temperature ≥ A2 , after the Ald time, the EH
high temperature alarm is activated.
During a high or low temperature alarm, the display alternates the
visualisation of the temperature with the EH or EL headings; the
alarm relay is activated (if set), the Buzzer (silenceable) and the
alarm bell icon (flashing).
When the set alarm conditions are turned off, alarm signals
automatically undo (the alarm relay is deactivated, the buzzer is
silenced and the normal visualisation is reactivated).
The alarm bell icon remains on (fix) to indicate that EH or EL alarm
was triggered and the memorisation of the event (see HACCP
menu for displaying the last temperature alarm activated). To get
the alarm, push the arrow button up when the fix bell light is on.
Besides, the starting date of the latest EH or EL event is registered,
together with its duration and its maximum or minimum reached
temperature.
A counter of the nr of occurred alarms from the latest alarm
reset (max 99 alarms can be counted) is also present.
To display data related to the last temperature alarm, enter in
the HACCP menu (push the arrow button up + stand-by for 3
seconds). Inside the menu, all the data can be scrolled with the
up and down arrows or they can be reset, by pressing the SET
button + arrow up button for 5 seconds. Once the reset
occurred, a BIP with the buzzer is provided to confirm the
occurred cancelation. To exit the menu, wait 10 seconds without
pressing anything or press simultaneously the up and down
arrows.
HACCP variables are available in read-only mode and are the
following:
VARIABLE LIST HACCP LEVEL
(Values in read-only)
E##
Indicates the latest
activated
temperature alarm.
EH = high temperature
alarm
EL = low temperature
alarm
-- = no alarms have been
activated from the latest
reset
###
Temperature peak
value reached during
the latest EH or EL
alarm
-45…+45°C
--- = no alarms have been
activated from the latest
reset
y##
Year of the start of
the latest
temperature alarm
y 00 – y99
y -- = no alarms have been
activated from the latest
reset
M##
Month of the start of
the last temperature
alarm
M 01 – M12
M -- = no alarms have been
activated from the latest
reset
d##
Day of the start of the
last temperature
alarm
d 01 – d31
d -- = nessun allarme
intervenuto dall’ultimo
reset
h##
Hour of the start of
the last temperature
alarm
h 00 – h24
h -- = no alarms have been
activated from the latest
reset
m##
Minutes of the start
of the last
temperature alarm
m 00 – m59
m -- = no alarms have been
activated from the latest
reset
t##
Duration (hours) of
the last temperature
alarm
t 00 – t99
t -- = no alarms have been
activated from the latest
reset
C##
Counter of the nr of
temperature alarm
events occurred
(being memorized data of
the latest temperature
alarm event, the counter is
boosted to know if
previously other alarms
occurred. This counter
resets with the memorized
alarm reset (silenced
SET for 5 sec.) It is
implemented at every new
temperature alarm.)
C 00 – C99
C -- = no alarms have been
activated from the latest reset
DIAGNOSTICS
The display shows ‘orH’ for temperature out of range
greater than +99.9°C. It shows ‘orL’ for temperature out of
range less than -45.0°C.
In the case of faults, the “Expert nano” control unit informs the
operator by means of alarm codes shown on the display and an
acoustic signal emitted by the buzzer (if present). The acoustic
alarm can be stopped by pressing the UP key (the error code
remains) and can be reactivated by pressing the SET key. In the
event of an alarm, one of the following messages is displayed:
ALARM CODE TABLE
Var
MEANING
E0 Functional fault of ambient probe.
Eu1
Functional fault of defrosting probe (in this case, any defrosting
processes will have a duration equal to time d31).
Eu2 Functional fault of defrosting probe (in this case, any defrosting
processes will have a duration equal to time d32).
E2 EEPROM memory error. All outputs are deactivated except for
alarm outputs if present.
E8 Man-in-room alarm.
Ec
Compressor protection alarm (e.g. thermal protection or max.
pressure switch). All outputs are deactivated except for the
alarm output if present.
Ed
Door open alarm. When the door switch opens and the tdo
time has elapsed, normal function of the control is reset,
triggering the door open alarm (Ed).
EL Minimum temperature alarm. The letters EL flash alternating
with the temperature (see parameter A1).
EH Maximum temperature alarm. The letters EH flash alternating
with the temperature (see parameter A2).
E9
Room light alarm. The letters E9 flash alternating with the
temperature (see parameter dO3/4 and Tdo).
E6 Clock failure alarm
THERMOSTAT FUNCTION MODES (mOd)
The variable mOd allows the selection of function mode of the
thermostat, in particular:
- COLD MODE (mOd=0)
The DO1 output is activated when the temperature measured by
the ambient probe reaches or exceeds the SET POINT+r0 value
and remains active until the temperature drops below the SET
POINT. In this mode, the DO1 output is linked to the cold
function icon.
dO3/dO4 can be configured as hot relay for neutral zone
management. The output is activated when the ambient
temperature is lower than SET POINT-r0 and remains active until
the temperature exceeds the SET POINT.
- HOT MODE (mOd=1)
The DO1 output is activated when the temperature measured by
the ambient probe reaches or exceeds the SET POINT-r0 value
and remains active until the temperature increases and exceeds
the SET POINT. In this mode, the DO1 output is linked to the hot
function icon; defrosting and fan stop FSt are DISABLED.
PASSWORD FUNCTION
The password function is activated by entering a value other
than 0 for the PA parameter. See parameter P1 for various
protection levels. The protection is activated automatically if the
keyboard remains inactive for about 30 seconds. The figure 000
appears on the display. Use the up/down keys to change the
number and the SET key to confirm. The password entry
template 000 disappears if the keyboard is not activated within
30 seconds. If you forget the password, use the universal
number 100.
EMERGENCY MODE IN THE CASE OF ERROR EO
This safety mode guarantees the functioning of the compressor
even in the case of a faulty ambient probe (error EO). If probe
errors E0 and CE1 are different to 0, the compressor functions in
operation pause mode, with compressor ON for the time CE1
and OFF for the time CE2. If CE1>0 in the case of error E0,
defrosting is performed in normal functioning mode. If CE1=0
the emergency mode in the presence of error E0 remains
disabled. The compressor remains off and defrosting is
prevented to conserve the remaining cold. Eliminate as soon as
possible the cause of error E0 and reactivate the control’s
normal function for a correct temperature adjustment.
E N G L I S H
TECHNICAL DATA
Power Supply
Power voltage
12V +10/-15% 50-60Hz / 12Vdc +10/-15% class 2
Absorbed power
3 VA Max
Environment conditions
Operating temperature
-5T55°C - humidity < 90% Rel. Hum. Not condensing
Storage temperature
-20T70°C - humidity < 90% Rel. Hum. Not condensing
Unsuitable operating
environments
Environments with strong vibrations or impacts; aggressive, polluted or corrosive atmospheres, exposure to direct
solar radiation, explosive atmospheres or flammable gas.
General characteristics
Display
3-Digit with sign, decimal point and 9 LED status indicators
Resolution
0.1 °C
Probe precision (electronic)
± 0.5 °C
Reading range
-45T99 °C
200NANO4CK14
Connector for temperature repeater ECHO
Clamps
Power clamps: extractable, screw for cables with c/section 0.2 to 2.5mm
2
Signal clamps: extractable, screw for cables with c/section 0.2 to 1.5mm
2
Software class: A / Parameters saved on non-volatile memory (EEPROM)
Input characteristics
Analogue inputs
3 Inputs for NTC probes (10K Ώ 1% at 25°C)
Digital inputs
1 Input (clean contact)
Output characteristics (free voltage contact)
Compressor relay (DO1)
N.O. 16(6)A / 250V
Fan relay (DO2)
N.O. 8(3)A / 250V
Heating elements relay (DO3)
N.O. 8(3)A / 250V
Relay (DO4)
N.O. 8(3)A / 250V
Buzzer
Present
Dimensional, insulation and mechanical characteristics
Dimensions
93x37x65mm Depth 59mm (Depth 69mm with removable clamps)
Drill hole template
71x29mm (+0.2/-0.1mm)
Front protection rating
IP65 with front board installation
Installation
In front of board by means of rear fastening clips or or two front screws
Casing
Plastic PC+ABS UL94 V-0 body, PC transparent front, Key panel PC or PC+ABS
Insulation type
Class II
Conformity with EU low voltage directives, electromagnetic compatibility and EC mark
Conforms to following EU Directives : Directives 2014/30/EU, 2014/35/EU.
Conforms to following harmonised standards: EN60730-1:2016, EN60730-2-9:2010, EN61000-6-1:2007, EN61000-6-3:2007
