Evco S.p.A.

• Code 104K203E07

EVK203/EVK213/EVK223/EVK233/EVK253 Digital thermostats for ventilated refrigerating units version 1.07

GB ENGLISH 2 USER INTERFACE To modify a parameter: iSd Instrument locked alarm (only EVK213, EVK223 and EVK233 Digital outputs: 3 relays:
1 GETTING STARTED 2.1 Turning on/off the instrument • press and if parameter i0 has value 0) • compressor relay: 16 res. A @ 250 VAC, 5 FLA,
1.1 Important To turn on the instrument you have to supply it; to turn it off it is enough • press or in 15 Remedies: 30 LRA (NO contact) in EVK203, EVK213 and
Read these instructions carefully before installing and using the instru- to cut off the power supply. • press or do not operate 15 s. • check the reasons that have provoked the activation of EVK253 (this last with power supply 12 VAC/DC
ment and follow all additional information for installation and electrical Through the digital input (only EVK213, EVK223 and EVK233) it is also To quit the procedure: the multipurpose input and 12-24 VAC/DC); 30 res. A @ 250 VAC, 12 FLA,
connection; keep these instructions close to the instrument for future possible to turn off the instrument at a distance (or turn off the instru- • press and 4 s or do not operate 60 s. • switch off/on the power supply of the instrument 72 LRA (NO contact) in EVK233; 8 res. A @
consultations. ment via software; in this case the instrument remains connected to the Switch off/on the power supply of the instrument after the • look at parameters i1, i5, i7, i8 and i9 250 VAC, 2 FLA, 12 LRA otherwise
1.2 Installing the instrument power supply and the regulators are turned off). modification of the parameters. Effects: • defrost relay: 8 res. A @ 250 VAC, 2 FLA,
Panel mounting, with click brackets (supplied by the builder); dimen- 2.2 The display 3.3 Restoring the default value of configuration parameters • the regulators will be turned off 12 LRA (change-over contact)
sions in mm (in). If the instrument is turned on, during the normal operation the display • make sure no procedure is running COH Overheated condenser alarm (only EVK253) • evaporator fan relay: 8 res. A @ 250 VAC,
will show the quantity you have set with parameter P5: • press and 4 s: the display will show “PA” Remedies: 2 FLA, 12 LRA (NO contact) in EVK203, EVK213
• if P5 = 0, the display will show the cabinet temperature • press • check the condenser temperature and EVK253 (this last with power supply
• if P5 = 1, the display will show the working setpoint • press or in 15 s to set “743” • look at parameter C6 12 VAC/DC and 12-24 VAC/DC); 5 res. A @
• if P5 = 2, the display will show the evaporator temperature • press or do not operate 15 s Effects: 250 VAC otherwise.
• if P5 = 3, the display will show “cabinet temperature - evaporator tem- • press and 4 s: the display will show “dEF” • no effect The maximum current allowed on the loads is 10 A.
perature” • press CSd Compressor locked alarm (only EVK253) Serial port: port for the communication with the supervision system
• if P5 = 4, the display will show the condenser temperature (only • press or in 15 s to set “149” Remedies: (through a serial interface, via TTL, with MODBUS communication pro-
EVK253). • press or do not operate 15 s: the display will show “dEF” flash- • check the condenser temperature tocol) or with the programming key; by request.
2.3 Showing the cabinet temperature ing 4 s, after which the instrument will quit the procedure • cut off the power supply of the instrument and clean the Further communication ports: port for the communication with
• make sure the keyboard is not locked and no procedure is running • switch off/on the power supply of the instrument. condenser the remote indicator; by request, not available in EVK223, EVK233 and
• press 2 s: the display will show the first available label Make sure the default value of the parameters is appropri- • look at parameter C7 EVK253 with power supply 230 VAC and 115 VAC.
• press or to select “Pb1” ate, in particular if the probes are PTC probes. Effects:
• press 4 SIGNALS • the compressor and the evaporator fan will be turned off
DIMENS. MINIMUM TYPICAL MAXIMUM To quit the procedure: 4.1 Signals When the cause that has provoked the alarm disappears, the instru-
A 71.0 (2.795) 71.0 (2.795) 71.8 (2.826) • press or do not operate 60 s LED MEANING ment restores the normal operation, except for the instrument locked
B 29.0 (1.141) 29.0 (1.141) 29.8 (1.173) • press or as long as the display shows the quantity you have LED compressor alarm (code “iSd”) and the compressor locked alarm (code “CSd”) that
set with parameter P5 or do not operate 60 s. if it is lit, the compressor will be turned on need you switch off/on the power supply of the instrument.
2.4 Showing the evaporator temperature if it flashes: 6 INTERNAL DIAGNOSTICS
• make sure the keyboard is not locked and no procedure is running • the modification of the working setpoint will be running 6.1 Internal diagnostics
• press 2 s: the display will show the first available label • a compressor protection will be running (parameters C0, CODE MEANING
• press or to select “Pb2” C1, C2 and i7) Pr1 Cabinet probe error
• press LED defrost Remedies:
To quit the procedure: if it is lit, the defrost will be running • look at parameter P0
• press or do not operate 60 s if it flashes: • check the integrity of the probe
• press or as long as the display shows the quantity you have • the defrost will be required but a compressor protection • check the connection instrument-probe
set with parameter P5 or do not operate 60 s. will be running (parameters C0, C1 and C2) • check the cabinet temperature
Additional information for installation: If the evaporator probe is not enabled (parameter P3 = 0), the label • the dripping will be running (parameter d7) Effects:
• 59.0 (2.322) is the maximum depth with screw terminal blocks “Pb2” will not be shown. • the heating of the freezing fluid will be running (param- • the compressor activity will depend on parameters C4 and
• 83.0 (3.267) is the maximum depth with extractable terminal blocks 2.5 Showing the condenser temperature (only EVK253) eter dA) C5
• the panel thickness must not be higher than 8.0 mm (0.314 in) • make sure the keyboard is not locked and no procedure is running LED evaporator fan Pr2 Evaporator probe error
• working conditions (working temperature, humidity, etc.) must be be- • press 2 s: the display will show the first available label if it is lit, the evaporator fan will be turned on Remedies:
tween the limits indicated in the technical data • press or to select “Pb3” if it flashes, the after dripping evaporator fan delay will be • the same you saw in the previous case but related to the
• do not install the instrument close to heating sources (heaters, hot air • press running (parameter F3) evaporator probe
ducts, etc.), devices provided with big magnetos (big speakers, etc.), To quit the procedure: LED alarm Effects:
locations subject to direct sunlight, rain, humidity, dust, mechanical • press or do not operate 60 s if it is lit, an alarm will be running • if parameter P3 has value 1, the defrost will last the time
vibrations or bumps • press or as long as the display shows the quantity you have °C LED Celsius degree you will have set with parameter d3
• according to the safety legislation, the protection against electrical set with parameter P5 or do not operate 60 s. if it is lit, the unit of measure of the temperatures will be • if parameter P3 has value 1 and parameter d8 has value 2,
parts must be ensured by a correct installation of the instrument; the If the condenser probe is not enabled (parameter P4 = 0), the label Celsius degree (parameter P2) the instrument will work as if parameter d8 had value 0
parts that ensure the protection must be installed so that you can not “Pb3” will not be shown. °F LED Fahrenheit degree • if parameter F0 has value 3 or 4, the instrument will work
remove them if not by using a tool. 2.6 Activating the defrost by hand if it is lit, the unit of measure of the temperatures will be as if the parameter had value 2
1.3 Wiring diagram • make sure the keyboard is not locked and no procedure is running Fahrenheit degree (parameter P2) Pr3 Condenser probe error (only EVK253)
With reference to the wiring diagrams: • press 4 s. CODE MEANING Remedies:
• port 1 (by request) is the serial port for the communication with the If the function of the evaporator probe is the one of defrost probe (pa- Loc the keyboard and/or the working setpoint are locked (pa- • the same you saw in the previous case but related to the
supervision system (through a serial interface, via TTL, with MODBUS rameter P3 = 1) and to the defrost activation the evaporator tempera- rameter r3); also look at paragraph 2.7 condenser probe
communication protocol) or with the programming key; the port must ture is above the one you have set with parameter d2, the defrost will ---- the quantity to show is not available (for example because Effects:
not be used at the same time for the same purposes not be activated. the probe is not enabled) • the overheated condenser alarm (code “COH”) and the
• port 2 (by request, not available in EVK223, EVK233 and EVK253 with 2.7 Locking/unlocking the keyboard 5 ALARMS compressor locked alarm (code “CSd”) will never be acti-
power supply 230 VAC and 115 VAC) is the port for the communica- To lock the keyboard: 5.1 Alarms vated
tion with the remote indicator; the indicator shows the quantity you • make sure no procedure is running CODE MEANING When the cause that has provoked the alarm disappears, the instru-
have set with parameter P5. • press and 2 s: the display will show “Loc” 1 s. AL Lower temperature alarm ment restores the normal operation.
If the keyboard is locked, you will not be allowed to: Remedies: 7 TECHNICAL DATA
• show the evaporator temperature • check the temperature joined to the alarm 7.1 Technical data
• show the condenser temperature (only EVK253) • look at parameters A0, A1 and A2 Box: self-extinguishing grey.
• activate the defrost by hand Effects: Frontal protection: IP 65.
• modify the working setpoint with the procedure related in paragraph • no effect Connections (use copper conductors only): screw terminal blocks
3.1 (you also can modify the working setpoint through parameter SP). AH Upper temperature alarm (power supply, inputs and outputs), 6 poles connector (serial port; by
These operations provoke the visualization of the label “Loc” 1 s. Remedies: request), 4 poles connector (to the remote indicator; by request, not
To unlock the keyboard: • check the temperature joined to the alarm available in EVK223, EVK233 and EVK253 with power supply 230 VAC
• press and 2 s: the display will show “UnL” 1 s. • look at parameters A3, A4 and A5 and 115 VAC); extractable terminal blocks (power supply, inputs and
2.8 Silencing the buzzer Effects: outputs) by request.
• make sure no procedure is running • no effect Working temperature: from 0 to 55 °C (32 to 131 °F, 10 ... 90% of
• press a button (the first pressure of the button does not provoke its id Door switch input alarm (only EVK213, EVK223 and EVK233 relative humidity without condensate).
usual effect). and if parameter i0 has value 2 or 3) Power supply EVK203 and EVK253: 230 VAC, 50/60 Hz,
Additional information for electrical connection: 3 SETTINGS Remedies: 3 VA (approximate); 115 VAC or 12-24 VAC/DC or 12 VAC/DC by re-
• do not operate on the terminal blocks with electrical or pneumatic 3.1 Setting the working setpoint • check the reasons that have provoked the activation of quest.
screwers • make sure the keyboard is not locked and no procedure is running the input Power supply EVK213: 12 VAC/DC, 50/60 Hz, 3 VA (approximate);
• if the instrument has been moved from a cold location to a warm one, • press LED will flash • look at parameters i0 and i1 12-24 VAC/DC by request.
the humidity could condense on the inside; wait about an hour be- • press or in 15 s; also look at parameters r1, r2 and r3 Effects: Power supply EVK223 and EVK233: 230 VAC, 50/60 Hz, 3 VA
fore supplying it • press or do not operate 15 s. • the effect you have set with parameter i0 (approximate); 115 VAC by request.
• test the working power supply voltage, working electrical frequency You also can modify the working setpoint through parameter SP. iA Multipurpose input alarm (only EVK213, EVK223 and EVK233 Insulation class: 2.
and working electrical power of the instrument; they must correspond 3.2 Setting configuration parameters and if parameter i0 has value 0) Alarm buzzer: by request.
with the local power supply To gain access the procedure: Remedies: Measure inputs EVK203, EVK213, EVK223 and EVK233: 2
• disconnect the local power supply before servicing the instrument • make sure no procedure is running • check the reasons that have provoked the activation of (cabinet probe and evaporator probe) for PTC/NTC probes.
• do not use the instrument as safety device • press and 4 s: the display will show “PA” the input Measure inputs EVK253: 3 (cabinet probe, evaporator probe and
• for repairs and information on the instrument please contact Evco • press • look at parameters i1 and i5 condenser probe) for PTC/NTC probes.
sales network. • press or in 15 s to set “-19” Effects: Digital inputs (only EVK213, EVK223 and EVK233): 1 (mul-
• press or do not operate 15 s • if parameter i5 has value 3, there will be no effect tipurpose/door switch) for NO/NC contact (free of voltage, 5 V 1 mA).
• press and 4 s: the display will show “SP”. • if parameter i5 has value 4, the compressor will be turned Working range: from -50.0 to 150.0 °C (-50 to 300 °F) for PTC probe,
To select a parameter: off from -40.0 to 105.0 °C (-40 to 220 °F) for NTC probe.
• press or Resolution: 0.1 °C/1 °C/1 °F.
8 WORKING SETPOINTS AND CONFIGURATION PARAMETERS A8 0 240 min 15 upper temperature alarm delay since the end of the after dripping evaporator fan delay (only if A3 = 0) (17) make sure the time you have set with parameter i7 is shorter than the one you have set with parameter i9.
8.1 Working setpoints (12)
MIN. MAX. U.M. DEF. WORKING SETPOINTS A9 0 240 min 15 upper temperature alarm delay since the deactivation of the door switch input (only EVK213, EVK223 The instrument must be disposed according to the local legislation about the collection for electrical and electronic equipment.
r1 r2 °C/°F (1) 0.0 working setpoint and EVK233) (13)
8.2 Configuration parameters PARAM. MIN. MAX. U.M. DEF. EVAPORATOR FAN
PARAM. MIN. MAX. U.M. DEF. WORKING SETPOINTS F0 0 4 --- 1 evaporator fan activity during the normal operation
SP r1 r2 °C/°F (1) 0.0 working setpoint 0 = turned off
PARAM. MIN. MAX. U.M. DEF. MEASURE INPUTS 1 = turned on
CA1 -25.0 25.0 °C/°F (1) 0.0 cabinet probe offset 2 = according to the compressor
CA2 -25.0 25.0 °C/°F (1) 0.0 evaporator probe offset 3 = according to F1 (14)
CA3 -25.0 25.0 °C/°F (1) 0.0 condenser probe offset (only EVK253) 4 = turned off if the compressor is turned off, according to F1 if the compressor is turned on (14)
P0 0 1 --- 1 kind of probe F1 -99.0 99.0 °C/°F (1) -1.0 evaporator temperature above which the evaporator fan is turned off (only if F0 = 3 or 4) (4)
0 = PTC F2 0 2 --- 0 evaporator fan activity during the defrost and the dripping
1 = NTC 0 = turned off
P1 0 1 --- 1 decimal point Celsius degree (for the quantity to show during the normal operation) 1 = turned on
1 = YES 2 = according to F0
P2 0 1 --- 0 unit of measure temperature (2) F3 0 15 min 2 duration of the after dripping evaporator fan delay
0 = °C PARAM. MIN. MAX. U.M. DEF. DIGITAL INPUTS (only EVK213, EVK223 and EVK233)
1 = °F i0 0 3 --- 2 kind of digital input
P3 0 2 --- 1 evaporator probe function 0 = MULTIPURPOSE INPUT - in this case look at parameters i1, i5, i7, i8 and i9
0 = probe not enabled 1 = RESERVED
1 = defrost probe and thermostat probe for the evaporator fan 2 = DOOR SWITCH INPUT - in this case look at parameters i1, i2 and i3; the activation of the input will
2 = thermostat probe for the evaporator fan turn off the evaporator fan (at most the time i3 or as long as the input will be deactivated)
P4 0 1 --- 1 enabling the condenser probe (only EVK253) 3 = DOOR SWITCH INPUT - in this case look at parameters i1, i2 and i3; the activation of the input will
1 = YES turn off the compressor and the evaporator fan (at most the time i3 or as long as the input will be
P5 0 4 --- 0 quantity to show during the normal operation deactivated) (15)
0 = cabinet temperature i1 0 2 --- 0 kind of contact digital input
1 = working setpoint 0 = NO (the input will be active if you close the contact)
2 = evaporator temperature 1 = NC (the input will be active if you open the contact)
3 = “cabinet temperature - evaporator temperature” 2 = input not enabled
4 = condenser temperature (only EVK253, not visible otherwise) i2 -1 120 min 30 delay to signal the door switch input alarm
PARAM. MIN. MAX. U.M. DEF. MAIN REGULATOR -1 = no signal
r0 0.1 15.0 °C/°F (1) 2.0 working setpoint differential i3 -1 120 min 15 maximum duration of the effect provoked by the activation of the door switch input
r1 -99.0 r2 °C/°F (1) -50.0 minimum working setpoint -1 = the effect will last as long as the input will be deactivated
r2 r1 99.0 °C/°F (1) 50.0 maximum working setpoint i5 0 6 --- 3 effect provoked by the activation of the multipurpose input
r3 0 1 --- 0 locking the working setpoint modification (with the procedure related in paragraph 3.1) 0 = no effect
1 = YES 1 = SYNCHRONIZING THE DEFROSTS - spent the time d5 the defrost will be activated (16)
r4 0.0 99.0 °C/°F (1) 0.0 temperature increase during function Energy Saving (only EVK213, EVK223 and EVK233); also look at i5 2 = ACTIVATING THE ENERGY SAVING - function Energy Saving will be activated (as long as the input
PARAM. MIN. MAX. U.M. DEF. COMPRESSOR PROTECTIONS will be deactivated); also look at r4 (16)
C0 0 240 min 0 compressor delay since you turn on the instrument 3 = ACTIVATING THE EXTERNAL ALARM - spent the time i7 the display will show the code “iA” flashing
C1 0 240 min 5 minimum time between two activations in succession of the compressor; also compressor delay since and the buzzer will be activated (as long as the input will be deactivated)
the end of the cabinet probe error (3) 4 = ACTIVATING THE MANOSTAT - the compressor will be turned off, the display will show the code “iA”
C2 0 240 min 3 minimum time the compressor remains turned off flashing and the buzzer will be activated (as long as the input will be deactivated); also look at i7, i8
C3 0 240 s 0 minimum time the compressor remains turned on and i9
C4 0 240 min 10 time the compressor remains turned off during the cabinet probe error; also look at C5 5 = TURNING OFF THE INSTRUMENT - the instrument will be turned off via software (as long as the
C5 0 240 min 10 time the compressor remains turned on during the cabinet probe error; also look at C4 input will be deactivated); also look at C0, d4 and A6
C6 0.0 199.0 °C/°F (1) 80.0 condenser temperature above which the overheated condenser alarm is activated (only EVK253) (4) 6 = ACTIVATION COOLING (only EVK213 and EVK223) - the compressor will be turned on (as long as
C7 0.0 199.0 °C/°F (1) 90.0 condenser temperature above which the compressor locked alarm is activated (only EVK253) the input will be deactivated); in this case parameters C4 and C5 are not meaningful (16)
C8 0 15 min 1 compressor locked alarm delay (only EVK253) (5) i7 0 120 min 0 if i5 = 3, delay to signal the multipurpose input alarm
PARAM. MIN. MAX. U.M. DEF. DEFROST if i5 = 4, compressor delay since the deactivation of the multipurpose input (17)
d0 0 99 h 8 defrost interval; also look at d8 (6) i8 0 15 --- 0 number of multipurpose input alarms such as to provoke the instrument locked alarm (only if i5 = 4)
0 = the defrost at intervals will never be activated 0 = alarm not enabled
d1 0 1 --- 0 kind of defrost i9 1 999 min 240 time without multipurpose input alarms in order that the alarm counter is cleared (only if i5 = 4)
0 = electric defrost PARAM. MIN. MAX. U.M. DEF. SERIAL NETWORK (MODBUS)
1 = hot gas defrost LA 1 247 --- 247 instrument address
d2 -99.0 99.0 °C/°F (1) 2.0 defrost cutoff temperature (only if P3 = 1) Lb 0 3 --- 2 baud rate
d3 0 99 min 30 defrost duration if P3 = 0 or 2; defrost maximum duration if P3 = 1 0 = 2,400 baud
0 = the defrost will never be activated 1 = 4,800 baud
d4 0 1 --- 0 defrost when you turn on the instrument 2 = 9,600 baud
1 = YES 3 = 19,200 baud
d5 0 99 min 0 defrost delay when you turn on the instrument (only if d4 = 1); also look at i5 LP 0 2 --- 2 parity
d6 0 1 --- 1 temperature shown during the defrost 0 = none
0 = cabinet temperature 1 = odd
1 = if to the defrost activation the cabinet temperature is below “working setpoint + r0”, at most “work- 2 = even
ing setpoint + r0”; if to the defrost activation the cabinet temperature is above “working setpoint + PARAM. MIN. MAX. U.M. DEF. RESERVED
r0”, at most the cabinet temperature to the defrost activation (7) E9 0 1 --- 1 reserved
d7 0 15 min 2 dripping duration (1) the unit of measure depends on parameter P2
d8 0 2 --- 0 kind of defrost interval (2) set the parameters related to the regulators appropriately after the modification of the parameter P2
0 = the defrost will be activated when the instrument will have remained turned on the time d0 (3) if parameter C1 has value 0, the delay since the end of the cabinet probe error will however be 2 min
1 = the defrost will be activated when the compressor will have remained turned on the time d0 (4) the differential of the parameter is 2.0 °C/4 °F
2 = the defrost will be activated when the evaporator temperature will have remained below the tem- (5) if (when you turn on the instrument) the condenser temperature is above the one you have set with parameter C7, parameter C8 will have
perature d9 the time d0 (8) no effect
d9 -99.0 99.0 °C/°F (1) 0.0 evaporator temperature above which the count of the defrost interval is suspended (only if d8 = 2) (6) the instrument stores the count of the defrost interval every 30 min; the modification of parameter d0 has effect since the end of the previous
dA 0 99 min 0 minimum time the compressor must be remained turned on (to the defrost activation) in order that the defrost interval or since the activation of a defrost by hand
defrost can be activated (only if d1 = 1) (9) (7) the display restores the normal operation as soon as the after dripping evaporator fan delay ends and the cabinet temperature falls below
PARAM. MIN. MAX. U.M. DEF. TEMPERATURE ALARMS the one that has locked the display (or if a temperature alarm arises)
A0 0 2 --- 0 temperature joined to the lower temperature alarm (8) if parameter P3 has value 0 or 2, the instrument will work as if parameter d8 had value 0
0 = cabinet temperature (9) if (to the defrost activation) the duration of the activation of the compressor is shorter than the time you have set with parameter dA, the
1 = evaporator temperature (10) compressor will further remain turned on the fraction of time required to complete it
2 = condenser temperature (only EVK253, not visible otherwise) (11) (10) if parameter P3 has value 0, the instrument will work as if parameter A0 had value 0
A1 -99.0 99.0 °C/°F (1) -10.0 temperature below which the lower temperature alarm is activated; also look at A0 and A2 (4) (11) if parameter P4 has value 0, the instrument will work as if parameter had value 0
A2 0 2 --- 1 kind of lower temperature alarm (12) during the defrost, the dripping and the evaporator fan delay the temperature alarms are not enabled, on condition that they have arisen
0 = alarm not enabled after the activation of the defrost
1 = relative to the working setpoint (or "working setpoint - A1”; consider A1 without sign) (13) during the activation of the door switch input the upper temperature alarm is not enabled, on condition that it has arisen after the activation
2 = absolute (or A1) of the input
A3 0 1 --- 0 temperature joined to the upper temperature alarm (only EVK253, not visible = 0 otherwise) (14) if parameter P3 has value 0, the instrument will work as if parameter F0 had value 2
0 = cabinet temperature (15) the compressor is turned off spent 10 s since the activation of the input; if the input is activated during the defrost or the after dripping
1 = condenser temperature (11) evaporator fan delay, the activation will provoke no effect on the compressor
A4 -99.0 99.0 °C/°F (1) 10.0 temperature above which the upper temperature alarm is activated; also look at A3 and A5 (4) (16) the effect is not signalled
A5 0 2 --- 1 kind of upper temperature alarm
0 = alarm not enabled
1 = relative to the working setpoint (or "working setpoint + A4”; consider A4 without sign)
EVCO S.p.A. This document belongs to Evco; unless you are authorized by Evco, you can not publish it.
PT • 30/10

2 = absolute (or A4)

Via Mezzaterra 6, 32036 Sedico Belluno ITALY Evco does not take any responsibility about features, technical data and possible mistakes related in this document or coming by its use.
A6 0 240 min 120 upper temperature alarm delay since you turn on the instrument (only if A3 = 0)
Phone +39-0437-852468 • Fax +39-0437-83648 Evco does not take any responsibility about damages coming by the non-observance of the additional information.
A7 0 240 min 15 temperature alarm delay
info@evco.it • www.evco.it Evco reserves the right to make any change without prior notice and at any time without prejudice the basic safety and operating features.