Evco EVKB23 Manual

EVKB23 and EVKB33
Evco S.p.A. • Code 104KB23A01
EVKB23 and EVKB33
GB ENGLISH
GB ENGLISH
1 GETTING STARTED
1.1 Important
1 GETTING STARTED
Read these instructions carefully before installing and using the instru-
ment and follow all additional information for installation and electrical
connection; keep these instructions close to the instrument for future
1.1 Important
consultations.
The instrument must be disposed according to the local
Read these instructions carefully before installing and using the instru-
legislation about the collection for electrical and electronic
equipment.
1.2 Installing the instrument
ment and follow all additional information for installation and electrical
Panel mounting, with click brackets (supplied by the builder); dimen-
sions in mm (in).
connection; keep these instructions close to the instrument for future
consultations.
1.2 Installing the instrument
DIMENS. MINIMUM
A 71.0 (2.795) 71.0 (2.795)
Panel mounting, with click brackets (supplied by the builder); dimen-
B 29.0 (1.141) 29.0 (1.141)
sions in mm (in).
Additional information for installation:
• 59.0 (2.322) is the maximum depth with screw terminal blocks
• 81.5 (3.208) is the maximum depth with extractable terminal blocks
• the panel thickness must not be higher than 8.0 mm (0.314 in)
• working conditions (working temperature, humidity, etc.) must be be-
tween the limits indicated in the technical data
• do not install the instrument close to heating sources (heaters, hot air
ducts, etc.), devices provided with big magnetos (big speakers, etc.),
locations subject to direct sunlight, rain, humidity, dust, mechanical
vibrations or bumps
• according to the safety legislation, the protection against electrical
parts must be ensured by a correct installation of the instrument; the
parts that ensure the protection must be installed so that you can not
remove them if not by using a tool.
1.3 Wiring diagram
With reference to the wiring diagrams: the serial port (by request) is the
port for the communication with the programming key.
DIMENS.
A
Models with power supply 230 VAC and 115 VAC.
B
Modelli con alimentazione 230 VCA e 115 VCA.
Models with power supply 12 VAC/DC.
Modelli con alimentazione 12 VCA/CC.
Additional information for installation:
• 59.0 (2.322) is the maximum depth with screw terminal blocks
• 81.5 (3.208) is the maximum depth with extractable terminal blocks
• the panel thickness must not be higher than 8.0 mm (0.314 in)
• working conditions (working temperature, humidity, etc.) must be be-
tween the limits indicated in the technical data
• do not install the instrument close to heating sources (heaters, hot air
ducts, etc.), devices provided with big magnetos (big speakers, etc.),
locations subject to direct sunlight, rain, humidity, dust, mechanical
vibrations or bumps
• according to the safety legislation, the protection against electrical
parts must be ensured by a correct installation of the instrument; the
parts that ensure the protection must be installed so that you can not
remove them if not by using a tool.
1.3 Wiring diagram
With reference to the wiring diagrams: the serial port (by request) is the
port for the communication with the programming key.
Models with power supply 230 VAC and 115 VAC.
Modelli con alimentazione 230 VCA e 115 VCA.
Models with power supply 12 VAC/DC.
Modelli con alimentazione 12 VCA/CC.
Simple digital thermostats for ventilated refrigerating units
The instrument must be disposed according to the local
legislation about the collection for electrical and electronic
equipment.
TYPICAL MAXIMUM
71.8 (2.826)
29.8 (1.173)
MINIMUM
71.0 (2.795)
29.0 (1.141)
Models with power supply 230 VAC and 115 VAC.
Modelli con alimentazione 230 VCA e 115 VCA.
Models with power supply 12 VAC/DC.
Modelli con alimentazione 12 VCA/CC.
Additional information for electrical connection:
• do not operate on the terminal blocks with electrical or pneumatic
screwers
• if the instrument has been moved from a cold location to a warm one,
the humidity could condense on the inside; wait about an hour be-
fore supplying it
• test the working power supply voltage, working electrical frequency
and working electrical power of the instrument; they must correspond
with the local power supply
• disconnect the local power supply before servicing the instrument
• do not use the instrument as safety device
• for repairs and information on the instrument please contact Evco
sales network.
2 USER INTERFACE
2.1 Preliminary information
There are the following operation status:
• status "on" (the instrument is supplied and is turned on: the regulators
can be turned on)
• status "stand-by" (the instrument is supplied but it is turned off via
software: the regulators are turned off)
• status "off" (the instrument is not supplied).
"Turning on" means moving from status stand-by to status on; "turning
off" means moving from status on to status stand-by.
After an interruption of power supply the instrument moves to the sta-
tus it was before the interruption.
2.2 Turning on/off the instrument
• make sure the keyboard is not locked and no procedure is running
• press 4 s.
2.3 The display
If the instrument is turned on, during the normal operation the display
will show the cabinet temperature.
If the instrument is turned off, the display will be switched off.
2.4 Showing the evaporator temperature
• make sure the keyboard is not locked and no procedure is running
TYPICAL
• press 2 s: the display will show "P2"
• press
71.0 (2.795)
To quit the procedure:
• press or do not operate 60 s
• press or as long as the display shows the cabinet
29.0 (1.141)
temperature or do not operate 60 s.
If the evaporator probe is not enabled (parameter P3 = 0), the label
"P2" will not be shown.
2.5 Activating the defrost by hand
• make sure the keyboard is not locked and no procedure is running
• press 4 s.
If the function of the evaporator probe is the one of defrost probe (pa-
rameter P3 = 1) and to the defrost activation the evaporator tempera-
ture is above the one you have set with parameter d2, the defrost will
not be activated.
2.6 Locking/unlocking the keyboard
To lock the keyboard:
• make sure no procedure is running
• press and 1 s: the display will show "Lo" 1 s.
If the keyboard is locked, you will not be allowed to:
• turn on/off the instrument through button
• show the evaporator temperature
• activate the defrost by hand
• modify the working setpoint with the procedure related in paragraph
3.1 (you also can modify the working setpoint through parameter SP).
Sim
These operations provoke the visualizatio
To unlock the keyboard:
• press and 1 s: the display will
3 SETTINGS
3.1 Setting the working setpoint
• make sure the keyboard is not locked a
• press : LED will flash
• press or in 15 s; also look at
• press or do not operate 15 s.
You also can modify the working setpoin
3.2 Setting configuration parame
To gain access the procedure (for the mod
• make sure the keyboard is not locked a
• press and 4 s: the display will
To gain access the procedure (for the mo
• make sure no procedure is running
• press and 4 s: the display will
• press
• press or in 15 s to set "-19"
• press or do not operate 15 s
• press and 4 s: the display will
To select a parameter:
• press or
To modify a parameter:
• press
• press or in 15
• press or do not operate 15 s.
To quit the procedure:
• press and 4 s or do not opera
Switch off/on the power supply of
modification of the parameters.
4 SIGNALS
4.1 Signals
LED MEANING
LED compressor
if it is lit, the compressor will
if it flashes:
• the modification of the wor
• a compressor protection w
and C2)
LED defrost
if it is lit, the defrost will be ru
if it flashes:
• the defrost will be required
will be running (parameters
• the dripping will be running
• the heating of the freezing
eter dA)
LED evaporator fan
if it is lit, the evaporator fan w
if it flashes, the after dripping
running (parameter F3)
LED alarm
if it is lit, an alarm or an error
°C LED Celsius degree
if it is lit, the unit of measur
Celsius degree (parameter P2
°F LED Fahrenheit degree
if it is lit, the unit of measur
Fahrenheit degree (paramete
CODE MEANING
Lo
the keyboard is locked; look a
5 ALARMS
5.1 Alarms
CODE MEANING
AL Lower temperature alarm
MAXIMUM
Remedies:
• check the cabinet temperat
71.8 (2.826)
• look at parameter A1
Effects:
• no effect
29.8 (1.173)
AH Upper temperature alarm
Remedies:
• check the cabinet temperat
• look at parameter A4
Effects:
• no effect
iA Multipurpose input alarm (on
or 2)
Remedies:
• check the reasons that hav
the input
• look at parameters i1 and i5
Effects:
• if parameter i5 has value 1,
• if parameter i5 has value 2,
off