Honeywell ICON-343C User manual

Copyright © 2004 Honeywell Control Systems Ltd.
All Rights Reserved EN2B-0004UK07 R0304
ICON-343C / ICON-363C
REFRIGERATION CONTROLLER
USER GUIDE

ICON 343C / 363C USER GUIDE
EN2B-0004UK07 R0304 1
Trademark Information Genus® is a registered trademark of Honeywell Control Systems Ltd.

ICON 343C / 363C USER GUIDE
2EN2B-0004UK07 R0304
1. CONTENTS
1. CONTENTS.....................................................................................................................................................................2
2. SAFETY INSTRUCTIONS............................................................................................................................................3
3. GENERAL DESCRIPTION...........................................................................................................................................4
4. OPERATOR MODES ....................................................................................................................................................4
5. TECHNICAL SPECIFICATIONS.................................................................................................................................5
6. INSTALLATION .............................................................................................................................................................6
6.1. First Things .............................................................................................................................................................6
6.2. Probes......................................................................................................................................................................6
6.3. Electrical Wiring......................................................................................................................................................6
6.4. Fitting.......................................................................................................................................................................8
6.5. Probe Self Detect...................................................................................................................................................9
7. ICON FRONT PANEL .................................................................................................................................................10
7.1. Functions of the Front Panel..............................................................................................................................10
7.2. Controller front panel LEDs................................................................................................................................10
7.3. Controller front panel keys..................................................................................................................................11
7.4. Functions Of The Keys........................................................................................................................................11
7.5. LED Functions......................................................................................................................................................14
8. CONFIGURATION PARAMETERS..........................................................................................................................15
8.1. Parameter Configuration of the Icon 343C & 363C Controller.....................................................................16
9. REAL TIME CLOCK AND DEFROST SETUP .......................................................................................................23
9.1. Setting and Displaying the Real Time Clock...................................................................................................23
9.2. Setting the Daily Defrost Cycles on the Real Time Clock.............................................................................23
10. CONNECTING TO HONEYWELL GENUS NETWORK.....................................................................................24
10.1. Icon Controller Identification on Genus®Network........................................................................................24
10.2. Network Logging-On Procedure......................................................................................................................24
10.3. Network Logging-Off Procedure......................................................................................................................24
11. PROGRAMMABLE HOTKEY.................................................................................................................................25
11.1. HotKey Uploading Procedure..........................................................................................................................25
11.2. HotKey Downloading Procedure.....................................................................................................................25
12. TROUBLESHOOTING..............................................................................................................................................26
12.1. Alarm Messages ................................................................................................................................................26
12.2. Warning Messages............................................................................................................................................27
13. MAINTENANCE.........................................................................................................................................................27
14. ABOUT THE OPERATING INSTRUCTIONS .......................................................................................................27
15. NOTES.........................................................................................................................................................................28

ICON 343C / 363C USER GUIDE
EN2B-0004UK07 R0304 3
2. SAFETY INSTRUCTIONS
A. Keep this instruction booklet where it can always be easily consulted by
the operator or by maintenance personnel.
B. Before making an intervention or connection of any kind, make sure that
the mains are disconnected both from the instrument and from any
device connected to it.
C. Warning: hot components may be inside the plastic housing of the
controller.
D. No user-serviceable parts are inside the plastic housing of the controller.
E. The controller and any device connected to it must be installed in
compliance with the safety regulations in force. If these regulations are
not complied with during installation, and if our product is not installed in
compliance with the indications given in this instruction booklet, then this
may result in the safety of the controller being comprimised. In
particular, the ambient operating conditions for the controller given in our
technical data must be complied with. Absolutely avoid: water
condensation or excessive humidity, exposure to steam, corrosive or
toxic gases, contact with any type of liquid, and exposure to shocks or
extreme vibrations. Not complying with the above indications could
cause malfunctions and entail unpredictable consequences.
F. This controller is guaranteed by Honeywell to have a specific immunity
level, in compliance with CE regulations, against irradiated and
conducted electromagnetic disturbances. By irradiated electromagnetic
disturbances we recommend to screen the controller with a metal screen
connected to ground. To eliminate, or at least reduce conducted
disturbances, which not only could propagate through the mains but also
through the probes or the connected loads, carry out the electrical wiring
according to the indications given in this instruction booklet. If
necessary, use filters with suitable characteristics for specific
applications and for the detected type of disturbance.
G. If the type of probe to be used will directly touch foodstuffs, make sure
that it is in compliance with the local sanitary and health regulations.
H. The controller has no type of protection for the connected loads, so
these must be protected against short circuits, over-current or over-
voltage, excessive temperature, etc., by suitable protective means (such
as fuses, suitable thermo-magnetic circuit breakers, thermal protections,
etc.). At any rate, the electrical power lines that supply both the
controller and any other device connected to it, either directly or through
a transformer, must be manufactured in compliance with the regulations
in force.
I. When the controller is used in appliances where any malfunction of said
controller could cause a form of risk to persons, animals or objects, it is
ABSOLUTELY MANDATORY to provide a suitable protective/safety
device, in addition to the controller, which independently starts to
operate in case of a failure.
J. The controller cannot be used as critical component in life-support
devices or systems without a written approval expressly issued by the
legal representative of Honeywell.
CAUTION
Disconnect the power supply before you begin installing the Icon controller.
Do not reconnect the power supply until you have completed installation.

ICON 343C / 363C USER GUIDE
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3. GENERAL DESCRIPTION
The Honeywell Icon 300 Series is a microprocessor controlled thermostat,
powered by AC 230 V, 50/60 Hz, and operates with up tothree NTC or PT1000
probes (air-on, air-off and evaporator probes), and has up to six relay outputs
(alarm, auxiliary, light, compressor, defrost and fan), and two digital inputs
(doorswitch and auxiliary). Icon 300 series has a RS485 serial line connection
to enable the controller to interface to Honeywell Genus® network.
The Icon 300 series comes in two variants:
Icon 343 (Part Number: ICON-343C)
Icon 363 (Part Number: ICON-363C)
The Icon 300 series can be applied both in cooling and refrigeration
applications and has the following features:
•satisfy the most diverse plant requirements for cooling/refrigeration with its
42 configurable parameters, that can be set very easily and quickly through
the instrument keyboard.
•display the conditioned ambient temperature as well as the alarm messages
that refer to faulty cooling/refrigeration plant functions.
•control the conditioned ambient temperature through weighted average of
the air-on / air-off probes in order to maintain it under a set limit value (main
set point + differential), by activating the compressor to lower said
temperature every time it exceeds the main set point + differential value.
•control the defrost cycles of the cooling/refrigeration plant manually, through
the network or through the programmed mode; in the latter mode it is
possible to set the starting times of up to six daily defrost cycles.
•control the defrost cycle time as well as the successive startup of the
cooling/refrigeration plant fan through the evaporator probe.
•select theLow Humidity mode (with a specific key) which keeps the fan of
the cooling/refrigeration plant running.
4. OPERATOR MODES
The ICON 343C / 363C controller has three operating modes:
A. Stand-by: The controller is not active and OFF is displayed.
B. Programming: In this mode it is possible to set the configurable
parameter values of the thermostat.
C. Normal: In this mode the conditioned ambient temperature is displayed
and the digital outputs, the defrost cycles, and any case / coldroom alarms
are monitored.

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5. TECHNICAL SPECIFICATIONS
Icon 343C / 363C
Power Supply AC 230Vac 50/60 Hz
Transformer on board AC 230–12 V, 50/60 Hz
Door switch input operates according to customer
requirements. (not on ICON-343C).
Networking Connection RS485 (HoneywellGenus®)
Air-On, air-off and evaporator
probe range -55 … + 85 °C / -67 … + 185 °F
Compressor output SPST relay, AC 240 V 15A (resist.)
Defrost output SPST relay, AC 250 V 8A (resist.)
Fan output SPST relay, AC 250 V 6A (resist.)
Alarm output: SPDT relay, AC 250 V 4A (resist.) (not
on ICON-343)
ON/OFF (Auxiliary) output SPST relay, AC 250 V 4A (resist.) (not
on ICON-343)
Light output SPST relay, AC 250 V 6A (resist.)
Internal alarm buzzer
Back-up battery for internal clock 3 V, lithium (non-replaceable)
Display: four-digit, 14.2 mm high, green LEDs and
four decimal points
Front panel Keyboard with 8 keys, 1 red signaling
LEDs and 4 green signaling LEDs
Resolution 0.1 or 1 unit
Network Honeywell Genus®
Electrical connections of the inputs
(probes, digital inputs) through 3-mm screw terminals for 14 AWG, 2.5 mm2wires
Electrical connections of the
outputs (relays) Fast-onshroudedspades
Controller dimensions (height x
width x depth) 46mm x 188mm x 68mm
Installation panel mount
Panel cutout dimension 149.5 x 31.5 mm
Housing in self-extinguishing PC/ABS plastic.
Front Panel IP Class IP52
Operating ambient temperature 0…+ 50 °C / 32… 122°F
Operating ambient R.H. 30…85 % non-condensing
Storage temperature -20…+ 80 °C / -4…176 °F
Table 1. Technical Specifications
Honeywell reserves all rights to modify the technical features of its instruments as
well as to discontinue the production of any model without previous notification.

ICON 343C / 363C USER GUIDE
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6. INSTALLATION
6.1. First Things
The controller must be installed in a place where it is protected from extreme
vibration, impact, water, corrosive gases, steam, etc., and where temperature
and humidity do not exceed the values given in the technical data sheet.
6.2. Probes
We recommend the use of probes such as Honeywell 2k ohm NTC thermistor
temperature probes (Part Number: TP002K).
Both the air-on and air-off probe is to be installed inside the coldroom or
refrigerated display case where it is protected from direct air flow (i.e., far from
fans or doors) so that the average ambient temperature can be measured.
The evaporator probe must be installed in the coldest area between the
evaporator fins, i.e., where the greatest amount of ice will form and far from the
resistances or the area that warms up first during defrosting, in order to avoid
anticipating termination of said defrost cycle.
6.3. Electrical Wiring
The wiring diagram of the ICON 343C / 363C controller is shown in Figs.1. & 2.
We recommend the protection of the controllers power supply from
electromagnetic disturbances, voltage peaks, etc., especially applications in
particularly critical industrial environments.
This can be done while carrying out the electrical wiring by keeping the
following points in mind:
A. Keep the power output cables for the compressor, motors, etc. separate
from those for the control part;
B. Keep the probe cables, the controller power cables and the attached load
power supply cables separate and far enough from each other, so they do
not cross or form spirals;
C. Use mains filters to reduce disturbances at the controller power supply, as
well as filters for the loads in order to attenuate disturbances at the
controller relay outputs;
D. If strong radio disturbances are present, screen the entire device with a
metal screen and connect it to ground.
E. Use correct wire gauges to avoid damaging the screw connectors.

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Fig. 1. –Electrical wiring diagram of the ICON 343C controller
6,7:
8,9:
10,11:
12,13:
14,15:
16,17:
light output
controller power supply
compressor output
defrost output
fan output
RS485 serial line input
18:
19:
20:
21,22:
23,24:
25,26:
comms contact input
not used
door contact input
air-off probe input
evaporator probe input
air-on probe input
Fig. 2. –Electrical wiring diagram of the ICON 363C controller
1,2,3:
4,5:
6,7:
8,9:
10,11:
12,13:
14,15:
alarm output
ON / OFF output
light output
controller power supply
compressor output
defrost output
fan output
16,17:
18:
19:
20:
21,22:
23,24:
25,26:
RS485 serial line input
comms contact input
not used
door contact input
air-off probe input
evaporator probe input
air-on probe input

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6.4. Fitting
When fitting the controller, leave enough room at the rear to avoid compressing
or excessively bending the cables. The overall instrument dimensions and
panel cut out are given in Figure 3. below.
149.5
31.5
PANEL CUTOUT
188
46
UUUUUUUUUU
Fig. 3.
–
Controller
–
Pane
l
-
mount
(all dimensions are expressed in mm)
12 8
68
SCREW FIXTURE
Note:
In order to access the screw
fixture (x2) please remove the front
facia, screw controller onto panel
and replace front facia.
WARNING
Disconnect the power supply before you
begin installing the Icon controller. Do
not reconnect the power supply until you
have completed installation.
Please be aware that the relay outputs
are live when controller is powered up.
The contacts areNOT volt free.
Disconnect the power supply before you
begin any maintenance on the Icon
controller.

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6.5. Probe Self Detect
The Icon 300 series has a feature that allows only the AIR-OFF
probe to be fitted. If this function is used then the controller will not
alarm on any probes that are missing.
Again, this applies to the AIR OFF probe if this is the only probe
that is fitted, and therefore the weighting parameter pair must be
set to 0%.
This function only applies from initial power up of the controller. If
both the AIR-ON and AIR-OFF probes are fitted and the AIR-ON
probe becomes faulty, then the controller will continue to function
using the AIR-OFF probe, and the power to the controller would
have to be cycled off and then on again.