Evco Evk004 User manual

Evco S.p.A. • Code 104K004E05 • page 1/6

EVK004 Digital controller for ventilated refrigerating units, with RTC, HACCP, Energy Saving and Multideck functions version 1.05

GB ENGLISH

1 PREPARATIONS

1.1 Important

Please read these instructions carefully prior to installation and use,

and follow all the precautions for installation and electrical connec-

tions; keep these instructions with the device for future consultation.

1.2 Installazion

For the panel, using the snap-on brackets supplied; the dimensions

are given in mm (in).

DIMENS. MIN TYPICAL MAX

A 71.0 (2.795) 71.0 (2.795) 71.8 (2.826)

B 29.0 (1.141) 29.0 (1.141) 29.8 (1.173)

Recommendations for installation:

• the panel thickness must not exceed 8.0 mm (0.314 in)

• ensure that the operating conditions (operating temperature, hu-

midity, etc.) are within the limits indicated in the technical data sheets

• do not install the device near to any sources of heat (heating ele-

ments, hot air conduits, etc.), equipment containing powerful mag-

nets (large diffusers, etc.), areas affected by direct sunlight, rain, hu-

midity, excessive dust, mechanical vibration or shock

• in compliance with safety regulations, the device must be installed

correctly, and in such a way as to protect against any contact with

electrical parts; all safety devices must be fixed so that they cannot be

removed without the use of tools.

1.3 Electrical connections

With reference to the electrical circuit diagram:

• the service controlled by the fourth output depends on param. P4

• the service controlled by the fourth output depends on param. u1

• port 1 (by request) is the serial port used for communication with the

monitoring system (by means of a serial interface, via TTL, using the

MODBUS communication protocol) or with the programming key;

the port must not be used for both purposes simultaneously

• port 2 (by request) is the port used for comm. with the remote indi-

cator; the indicator displays the quantity assigned by parameter P6.

Points to note in relation to electrical connections:

• do not use electric or pneumatic screw-wrenches on the terminal

board

• if the device has been moved from a cold to a warm environment,

condensation may have formed inside; please wait approx. one

hour prior to switching on

• ensure that the voltage, frequency and operational power of the

device are compatible with the local power supply

• disconnect the power prior to proceeding with any kind of main-

tenance operation

• do not use the device as a safety device

• for repairs and any information relating to the device, contact the

Evco dealer network.

2 USER INTERFACE

2.1 Introductory comments

The device has the following operational states:

• "on" (power is connected and the device is on: the regulators may

be switched on)

• "stand-by" (power is connected but software sets the device to off:

the regulators are switched off; the option of manually switching

on/off the cabinet light or the auxiliary output depends on param-

eter u2).

The term "switching on" is understood to mean switching from the

stand-by state to on; the term "switching off" is understood to mean

switching from the on state to the stand-by state.

When the device is switched on, the status it was in when the power

was interrupted is restored.

2.2 Manual switching on/off of the device

• ensure the keyboard is not blocked and that no procedures are

running

• press for 4 s.

It is also possible to switch the device on/off using the multifunction

input.

2.3 The multideck function

If parameter P4 is set to 4, the Multideck will be active. In this case, the

temperature associated with the main regulator (i.e. the compressor)

will mainly be a function of the temperature detected by the cabinet

probe (in this application referred to as "air probe on") and the tem-

perature detected by the auxiliary probe (in this application referred

to as "air probe off").

The formula used to calculate the temperature (in this application re-

ferred to as "CPT temperature", Calculated Product Temperature) is s

follows:

CPT temperature = {(parameter P7 x air on temperature) + [(100 - pa-

rameter P7) x air off temperature]}

See also parameters d10 and d11.

If parameter P4 is set to 0, 1, 2 or 3, the Multideck function will not be

active.

In this case, the temperature associated with the main regulator (i.e. the

compressor) will be that of the cabinet.

2.4 The display

If the device is switched on, then during normal operation the display

will show the quantity assigned by parameter P5:

• if P5 = 0 and P4 = 0, 1, 2 or 3, the display will show the temperature

of the cabinet; if P5 = 0 and P4 = 4, the display will show the CPT

temperature

• if P5 = 1, the display will show the operational setpoint

• if P5 = 2, the display will show the evaporator temperature

• if P5 = 3, the display will show "cabinet temperature - evaporator

temperature"

• if P5 = 4, the display will show the temperature detected by the

auxiliary probe (only if parameter P4 is set to 1, 2 or 4).

While in stand-by mode the display is switched off.

2.5 Displaying the cabinet temperature

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “Pb1”

• press

To exit the procedure:

• press or do not operate the keypad for 60 s

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

2.6 Displaying the evaporator temperature

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “Pb2”

• press

To exit the procedure:

• press or do not operate the keypad for 60 s

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

If there is no evaporator probe (parameter P3 = 0), label "Pb2" will not

be displayed.

2.7 Displaying the temperature detected by the auxiliary

probe (only if parameter P4 is set to 1,2 or 4)

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “Pb3”

• press

To exit the procedure:

• press or do not operate the keypad for 60 s

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

If the function of the fourth input is not that of the auxiliary probe

(parameter P4 = 0 or 3), then label "Pb3" will not be displayed.

2.8 Displaying the CPT temperature (only if parameter P4

is set to 4)

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “CPt”

• press

To exit the procedure:

• press or do not operate the keypad for 60 s

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

If the Multideck function is not active (parameter P4 = 0, 1, 2 or 3), then

label "CPt" will not be displayed.

2.9 Manual activation of defrosting

• ensure the keyboard is not blocked and that no procedures are

running

• press for4 s.

If the function of the evaporator probe is that of the defrosting probe

(parameter P3 = 1) and on activation of defrosting the evaporator

temperature is above that established by parameter d2, then defrost-

ing will not be activated.

2.10 Manual switching on/off of the cabinet light (only if

parameter u1 is set to 0)

• ensure no procedures are running

• press

It is also possible to switch the cabinet light on/off remotely using the

microport and multifunction inputs; see also parameter u2.

2.11 Switching on the demister (only if parameter u1 is set

to 1)

• ensure the device is switched on and no procedures are running

• press for 2 s: the demister heater will be switched on for the

period of time established by parameter u6.

Manual switching off of the demister is not permitted.

2.12 Manual switching on/off of the auxiliary output (only

if parameter u1 is set to 2)

• ensure the keyboard is not blocked and that no procedures are

running

• press

It is also possible to switch the auxiliary output on/off using the

multifunction input.

If the auxiliary output has been switched on manually, then it will be

permitted to switch it off the same way (the same principle applies for

remote switching on); see also parameter u2.

2.13 Blocking/unblocking the keyboard

To block the keyboard:

• ensure no procedures are running

• press and for 2 s: the display will show "Loc" for 1 s.

If the keyboard is blocked, it will not be possible to:

• manually switch the device on/off

• display the cabinet temperature (using the procedure indicated in

paragraph 2.5)

• display the evaporator temperature (using the procedure indicated

in paragraph 2.6)

• display the temperature detected by the auxiliary probe (using the

procedure indicated in paragraph 2.7)

• display the CPT temperature (using the procedure indicated in para-

graph 2.8)

• manually activate defrosting

• manually switch the auxiliary output on/off

• view information pertaining to the HACCP alarms

• delete the HACCP alarm list

• modify the date and time

• change the operational setpoint using the procedure indicated in

paragraph 3.2 (the operational setpoint may also be set by means of

parameter SP)

• display the total hours of compressor operation

• delete the total hours of compressor operation.

These operations will cause the label "Loc" to be displayed for 1 s.

To unblock the keyboard:

• press and for 2 s: the display will show "UnL" for 1 s.

2.14 Buzzer mute

• ensure no procedures are running

Evco S.p.A. • Code 104K004E05 • page 2/6

• press any key (the first key press does not trigger the associated effect).

If parameter u1 is set to 4 (or the service controlled by the fourth output

is the alarm output) and parameter u4 is set to 1, then pressing he key

will also deactivate the alarm output.

3 SETTINGS

3.1 Setting the date and time (clock)

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “rtc”.

To modify the year:

• press within 60 s: the display will show "yy" followed by the

last two digits of the year

• press or within 15 s.

To modify the month:

• press within 15 s: the display will show "nn" followed by the

two digits for the month

• press or within 15 s.

To modify the day of the month:

• press within 15 s: the display will show "dd" followed by the

two digits for the day

• press or within 15 s.

To modify the hours:

• press within 15 s: the display will show "hh" followed by the

two digits for the hour

• press or within 15 s.

To modify the minutes:

• press within 15 s: the display will show "nn" followed by the

two digits for the minutes

• press or within 15 s

• press or do not operate the keypad for 15 s.

To exit the procedure:

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

3.2 Setting the operational setpoint

• ensure the keyboard is not blocked and that no procedures are

running

• press the LED will flash

• press or within 15 s; also see parameters r1, r2 and r3

• press or do not operate the keypad for 15 s.

It is also possible to set the operational setpoint by means of parameter

SP.

3.3 Setting the configuration parameters

To access the procedure:

• ensure no procedures are running

• press and for 4 s: the display will show “PA”

• press

• press or within 15 s to set “-19”

• press or do not operate the keypad for 15 s

• press and for 4 s: the display will show “SP”.

To select a parameter:

• press or

To select a parameter:

• press

• press or within 15 s

• press or do not operate the keypad for 15 s.

To exit the procedure:

• press and for 4 s or do not operate the keypad for 60 s.

Interrupt the device power supply after altering the param-

eters.

3.4 Resetting configuration parameter default values

• ensure no procedures are running

• press and for 4 s: the display will show “PA”

• press

• press or within 15 s to set “743”

• press or do not operate the keypad for 15 s

• press and for 4 s: the display will show “dEF”

• press

• press or within 15 s to set “149”

• press or do not operate the keypad for 15 s: the display will flash

"dEF" for 4 s, after which the device will exit the proce-

dure

• interrupt the power to the device.

Ensure that the parameter default values are appropriate,

particularly if the probes are PTC or Pt 1000 type.

4 HACCP

4.1 Introductory comments

The device is capable of storing up to 9 HACCP alarms, after which the

most recent alarm will overwrite the oldest.

The device can furnish the following information:

• the critical value

• the data and time at which the alarm occurred

• the alarm duration (from 1 minute to 99 hours and 59 minutes,

partial if the alarm is ongoing).

CODE ALARM TYPE (AND CRITICAL VALUE)

AL minimum temperature alarm (the minimum temperature

of the cabinet, the minimum CPT temperature or the mini-

mum temperature detected by the auxiliary probe during

the alarm state)

AH maximum temperature alarm (the maximum temperature

of the cabinet, the maximum CPT temperature or the maxi-

mum temperature detected by the auxiliary probe during

the alarm state)

id microport input alarm (the maximum temperature of the

cabinet or the maximum CPT temperature during the alarm

state); see also parameter i4

PF power failure alarm (the temperature of the cabinet or the

CPT temperature on restoration of the power supply); see

also parameter AA

Warnings:

•the device records minimum temperature alarms and

maximum temperature alarms providing the temperature

associated with the alarm is the cabinet

temperature(parameters A0 and A3 = 0 and parameter

P4 = 0, 1, 2 or 3), the CPT temperature (parameters A0 and

A3 = 0 and parameter P4 = 4) or the temperature meas-

ured by the auxiliary probe, providing its function is that

of display probe (parameter P4 = 1 and parameters A0 = 2

and A3 = 1)

•in order to avoid repeatedly recording power failure alarms,

disconnect the device power supply while in stand by

mode

•if the duration of a power failure alarm is such as to

cause a clock error, then the device will not provide any

information regarding alarm duration

•no alarms will be recorded if the device is in stand-by

mode.

When the cause of the alarm is resolved, the display returns to normal,

except in the case of a power failure alarm where normal display

function must be restored manually.

To restore the normal display manually:

• press any key.

If parameter u1 is set to 4 (or the service controlled by the fourth output

is the alarm output), then pressing any key will also deactivate the

alarm output.

The HACCP LED provides information relating to the status of the

HACCP alarm memory; please refer to paragraph 6.1.

4.2 Viewing HACCP alarm information

To access the procedure:

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “LS”

• press the display will show the most recent alarm code, or one

of the codes reported in the table in paragraph 4.1 fol-

lowed by the number "1" (the higher the number follow-

ing the code, the older the alarm).

To select an alarm:

• press or (to select "AH3" for example).

To display the information relating to the alarm:

• press the HACCP LED will stop flashing and remain on and the

display will show the following information in succes-

sion (for example):

INFO MEANING

8,0 the critical value is 8.0 °C/8 °F

StA the display is about to show the data and time at which the

alarm occurred

y07 the alarm occurred in 2007 (continued ...)

n03 the alarm occurred in the month of march (continued ...)

d26 the alarm occurred on 26 March 2007

h16 the alarm occurred at 16 hours (continued ...)

n30 the alarm occurred at 16:30 hours

dur the display is about to show the alarm duration

h01 the alarm lasted for 1 hour (continued ...)

n15 the alarm lasted for 1 hour and 15 minutes

AH3 the selected alarm

The display shows each piece of information for 1 s.

To exit the information series:

• press the display will show the selected alarm.

To exit the procedure:

• exit the information series

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• exit the information series

• press

If the instrument has stored no alarm, the label “LS” will not be shown.

4.3 Deleting the HACCP alarm list

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “rLS”

• press

• press or within 15 s to set “149”

• press or do not operate the keypad for 15 s: the display will flash

"- - - -" for 4 s and the HACCP LED will be turned off, after

which the device will exit the procedure.

If the instrument has stored no alarm, the label “rLS” will not be shown.

5 COMPRESSOR OPERATION TIME COUNTER

5.1 Introductory comments

The device is capable of recording up to 9,999 hours of compressor

function, after which the number "9999" flashes.

5.2 Displaying the compressor operation time

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select “CH”

• press

To exit the procedure:

• press or do not operate the keypad for 60 s

• press or until the display shows the quantity assigned by

parameter P5 or do not operate the keypad for

60 s.

Alternatively:

• press

5.3 Resetting the compressor operation time

• ensure the keyboard is not blocked and that no procedures are

running

• press for 2 s: the display will show the first available label

• press or to select rCH”

• press

• press or within 15 s to set “149”

• press or do not operate the keypad for 15 s: the display will flash

"- - - -" for 4 s, after which the device will exit the procedure.

6 INDICATORS

6.1 Indicators

LED MEANING

compressor LED

if on then the compressor is on

if flashing:

• the operational setpoint is being changed

• compressor protection is ongoing (parameters C0, C1,

C2 and i7)

defrosting LED

if on, defrosting ongoing

if flashing:

• defrosting has been requested, but compressor protec-

tion is ongoing (parameters C0, C1 and C2)

• drip-draining is ongoing (parameter d7)

• refrigerant fluid heating is ongoing (parameter dA)

Evaporator fan LED

if on then the evaporator fan is on

if flashing, then evaporator fan stop is ongoing (parameter

F3)

HACCP HACCP LED

if on, you will have not shown all the information on the

HACCP alarms

if flashing, the instrument will have stored at least one new

HACCP alarm

if off, you will have shown all the information on the HACCP

alarms or you will have cancelled the list of the HACCP

alarms

Maintenance LED

if on, compressor maintenance will be required (param-

eter C10)

alarm LED

if on, an alarm state or an error is ongoing

on/stand-by LED

if on, the device is in stand-by mode

°Cdegree Celsius LED

if on, the unit of measurement for temperature is degrees

Celsius (parameter P2)

if flashing, then the Energy Saving function is in operation

(parameters r4, i5, HE1 and HE2)

°Fdegree Fahrenheit LED

if on, the unit of measurement for temperature is degrees

Fahrenheit (parameter P2)

if flashing, then the Energy Saving function is in operation

(parameters r4, i5, HE1 and HE2)

Multifunction LED

parameter u1 is set to 0 (i.e. the service control-

led by the fourth output is the cabinet light)

if on, the cabinet light will have been switched on manu-

ally

if flashing, the cabinet light will have been turned on re-

motely (parameter i0)

parameter u1 is set to 1, 4, 5, 6 or 7

if on, the service controlled by the fourth output will be

turned on

parameter is set to 2 (i.e. the service controlled

by the fourth output is the auxiliary output)

if on, the auxiliary output will have been turned on manu-

ally

if flashing, the auxiliary output will have been turned on

remotely (parameter i5)

parameter u1 is set to 3 (i.e. the service control-

led by the fourth output is compressor 2)

if on, compressor 2 is on

if flashing, compressor 2 delay is ongoing (parameter C9)

Evco S.p.A. • Code 104K004E05 • page 3/6

CODE MEANING

Loc the key and/or operational setpoint are blocked (param-

eter r3), refer to paragraph 2.13

- - - - the quantity for display is not available (e.g. the probe is

absent)

7 ALARMS

7.1 Alarms

CODE MEANING

AL Minimum temperature alarm (HACCP alarm)

Remedies:

•check the alarm temperature

• check parameters A0, A1 and A2

Main consequences:

• if parameter A0 is set to 0 or if parameter P4 is set to 1 and

parameter A0 is set to 2, the device records the alarms

• if parameter u1 is set to 4, the alarm output will be acti-

vated

AH Maximum temperature alarm (HACCP alarm)

Remedies:

• check the alarm temperature

• check parameters A3, A4 and A5

Main consequences:

• if parameter A3 is set to 0 or if parameter P4 is set to 1 and

parameter A3 is set to 1, the device records the alarms

• if parameter u1 is set to 4, the alarm output will be acti-

vated

id Microport input alarm (HACCP alarm)

Remedies:

• check the causes which activated the input

• check parameters i0, i1 andi4

Main consequences:

• the outcome set by parameter i0

• if parameter i4 is set to 1, the device records the alarms,

providing parameter i2 is not set to -1

• if parameter u1 is set to 4, the alarm output will be acti-

vated

PF Power failure alarm (HACCP alarm)

Remedies:

• check the causes of the power failure

• press any key

Main consequences:

• the device records the alarm; see also parameter AA

• if parameter u1 is set to 4, the alarm output will be acti-

vated; pressing any key will also deactivate the alarm

output

iA Input malfunction alarm (only if parameter P4 is set to 3)

Remedies:

• check the causes which activated the input

• check parameters i5 and i6

Main consequences:

• if parameter i5 is set to 4, the device will continue to

operate as normal

• if parameter i5 is set to 5, the compressor will be switched

off

• if parameter u1 is set to 4, the alarm output will be acti-

vated

iSd Device blocked alarm (only if parameter P4 is set to 3)

Remedies:

• check the causes which activated the input malfunction

• switch the device off then on, or disconnect the power

supply

• check parameters i5, i6, i7, i8 and i9

Main consequences:

• the regulators will be switched off

• if parameter u1 is set to 4, the alarm output will be acti-

vated

COH Condenser overheating alarm (only if parameter P4 is set

to 3)

Remedies:

• check the condenser temperature

• check parameter C6

Main consequences:

• if parameter u1 is set to 4, the alarm output will be acti-

vated

CSd Compressor blocked alarm (only if parameter P4 is set to 3)

Remedies:

• check the condenser temperature

• switch the device off and then on again: if on switching

back on again the condenser temperature is still above

the value established by parameter C7, it will be neces-

sary to disconnect the power supply and clean the con-

denser

• check parameter C7

Main consequences:

• the compressor and evaporator fan will be switched off

• if parameter u1 is set to 4, the alarm output will be acti-

vated

When the cause that triggered the alarm has been resolved, the device

will restore normal operation, except for the following alarm states:

• the power failure alarm (code "PF") requiring that a key be pressed;

if parameter u1 is set to 4 (i.e. the service controlled by the fourth

output is the alarm output), pressing any key will also deactivate the

alarm output

• the device blocked alarm (code "iSd") which requires the device be

switched off or the power supply disconnected

• the compressor blocked alarm (code "CSd") which requires the

device be switched off or the power supply disconnected.

8 INTERNAL DIAGNOSTICS

8.1 Internal Diagnostics

CODE MEANING

Pr1 Cabinet probe error

Remedies:

• see parameter P0

• check probe integrity

• check probe-device connection

• check the cabinet temperature

Main consequences:

• the activity of the compressor will depend on param-

eters C4 and C5

• defrosting will never be activated

• if parameter u1 is set to 4, the alarm output will be acti-

vated

• if parameter u1 is set to 5 or 6, the fourth output will be

deactivated

Pr2 Evaporator probe error

Remedies:

• the same as for the previous case, but in relation to the

evaporator probe

Main consequences if parameter P4 is set to 0, 1, 2 or 3:

• if parameter P3 is set to 1, defrosting will last for the du-

ration established by parameter d3

• if parameter P3 is set to 1 and parameter d8 is set to 2, the

device will operate as though parameter d8 was set to 0

• if parameter F0 is set to 3 or 4, the device will operate as

though the parameter was set to 2

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Main consequences if parameter P4 is set to 4 and if param-

eter d10 is set to 0:

• the same as for the previous case

Main consequences if parameter P4 is set to 4 and if param-

eter d10 is set to 1:

• the auxiliary probe (air off probe) will function as the

evaporator probe

• the defrost end temperature will depend on parameter

d11

• if parameter F0 is set to 3 or 4, the device will operate as

though the parameter was set to 2

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Pr3 Auxiliary probe error (only if parameter P4 is set to 1, 2 or

Remedies:

• the same as for the previous case, but in relation to the

auxiliary probe

Main consequences if parameter P4 is set to 1 or 2:

• if parameter u1 is set to 4, the alarm output will be acti-

vated

Main consequences if parameter P4 is set to 4:

• the activity of the compressor will depend on param-

eters C4 and C5

• defrosting will never be activated

• if parameter u1 is set to 4, the alarm output will be acti-

vated

rtc Clock error

Remedies:

• reset the date and time

Main consequences:

• if parameter d8 is set to 3, the device will operate as though

the parameter was set to 0

• functions relating to date and time will not be available

(Energy Saving, HACCP, etc ...)

• if parameter u1 is set to 4, the alarm output will be acti-

vated

When the cause of the alarm is resolved, the device restores normal

operation, except for clock errors (code "rtc") which require the date

and time to be reset.

9 TECHNICAL DATA

9.1 Technical data

Case: grey self-extinguishing.

Front panel protection classification: IP 65.

Connections (usare solo conduttori in rame): screw terminal

blocks (power supply, inputs and outputs), 6 pin connector (serial

port; by request), 4 pin connector (to remote indicator; by request);

spring extractable terminal blocks (power supply, inputs and outputs)

by request.

Operating temperature: from 0 to 55ºC (from 32 to 131ºF, 10 ...

90% relative humidity, without condensation).

Power supply: 12 VAC/DC (or 12-24 VAC/DC), 50/60 Hz, 3.5 VA

(approximate) or 115 ... 230 VAC, 50/60 Hz, 5 VA (approximate).

If the instrument is supplied at 115 ... 230 VAC, protect the power

supply with a fuse rated 250 V, 1.25 A, 6.7 I2t.

Insulation class: 2.

Maintenance of clock data in absence of power supply: 24

hours will battery fully charged.

Battery charge time: 2 minutes without interruptions (the battery

is charged by the device power supply).

Alarm buzzer: available by request.

Sensor inputs: 2 (cabinet probe and evaporator probe) for PTC/

NTC/Pt 1000 probes.

Digital inputs: 1 (microport) for NA/NC contact (clean contact, 5 V,

1 mA); fourth input can be configured as sensor input (display probe,

condenser probe or air off probe, for PTC/NTC/Pt 1000 probes) or

digital input (multifunction, clean contact, 5 V, 1 mA).

Sensor range: from -50.0 to 150.0ºC (from -50 to 300ºF) for PTC

probes, from -40.0 to 105.0ºC (from -40 to 220ºF) for NTC probes,

from -100 to 150.0ºC (from -145 to 300ºF) for Pt 1000 probes.

Sensitivity: 0.1ºC/1ºC/1ºF.

Digital outputs: 4 relays:

•compressor relay: 16 A res. @ 250 VAC,

5 FLA, 30 LRA (exchange contacts)

•defrost relay: 8 A res. @ 250 VAC, 2 FLA,

12 LRA (exchange contacts)

•evaporator fan relay: 8 A res. @ 250 VAC,

2 FLA, 12 LRA (NA contacts)

•fourth output: 8 A res. @ 250 VAC, 2 FLA,

12 LRA (exchange contacts).

The maximum permitted current on loads is 10 A.

Serial port: port for communicating with the monitoring system (by

means of a serial interface, via TTL, using the MODBUS communica-

tion protocol) or with the programming key; by request.

Other communication ports: port for communicating with the

remote indicator; by request.

PT • 46/10

Evco S.p.A. • Code 104K004E05 • page 4/6

10 OPERATIONAL SETPOINT AND CONFIGURATION PARAMETERSE

10.1 Operational setpoint

MIN. MAX. U.O.M. DEF.

r1 r2 °C/°F (1) 0,0

10.2 Configuration paramaters

PARAM. MIN. MAX. U.O.M. DEF.

SP r1 r2 °C/°F (1) 0,0

PARAM. MIN. MAX. U.O.M. DEF.

CA1 -25,0 25,0 °C/°F (1) 0,0

CA2 -25,0 25,0 °C/°F (1) 0,0

CA3 -25,0 25,0 °C/°F (1) 0,0

P0 0 2 - - - - 1

P1 0 1 - - - - 1

P2 0 1 - - - - 0

P3 0 2 - - - - 1

P4 0 4 - - - - 3

P5 0 4 - - - - 0

P6 0 4 - - - - 0

P7 0 100 % 50

PARAM. MIN. MAX. U.O.M. DEF.

r0 0,1 15,0 °C/°F (1) 2,0

r1 -99,0 r2 °C/°F (1) -50,0

r2 r1 99,0 °C/°F (1) 50,0

r3 0 1 - - - - 0

r4 0,0 99,0 °C/°F (1) 0,0

PARAM. MIN. MAX. U.O.M. DEF.

C0 0 240 min 0

C1 0 240 min 5

C2 0 240 min 3

C3 0 240 s 0

C4 0 240 min 10

C5 0 240 min 10

C6 0,0 200,0 °C/°F (1) 80,0

C7 0,0 200,0 °C/°F (1) 90,0

C8 0 15 min 1

C9 0 120 s 5

C10 0 9999 h 1000

PARAM. MIN. MAX. U.O.M. DEF.

d0 0 99 h 8

d1 0 1 - - - - 0

d2 -99,0 99,0 °C/°F (1) 2,0

d3 0 99 min 30

d4 0 1 - - - - 0

d5 0 99 min 0

d6 0 1 - - - - 1

d7 0 15 min 2

d8 0 3 - - - - 0

d9 -99,0 99,0 °C/°F (1) 0,0

OPERATIONAL SETPOINT

operational setpoint

OPERATIONAL SETPOINT

operational setpoint

INGRESSI DI MISURA

cabinet probe offset

evaporator probe offset

auxiliary probe offset (only if P4 = 1, 2 or 4)

probe type

0 = PTC

1 = NTC

2 = Pt 1000

degree Celsius decimal point (for the quantity displayed during normal operation)

1 = YES

unit of temperature measurement (2)

0=°C

1=°F

evaporator probe function

0 = no probe

1 = defrosting probe and evaporator fan thermostat probe

2 = evaporator fan thermostat probe

fourth input function

0 = no probe

1 = sensor input (auxiliary probe, display probe)

2 = sensor input (auxiliary probe, condenser probe)

3 = digital input (multifunction input)

4 = sensor input (auxiliary probe, air off probe); refer to paragraph 2.3

quantity displayed during normal operation

0 = if P4 = 0, 1, 2 or 3, cabinet temperature

if P4 = 4, CPT temperature

1 = operational setpoint

2 = evaporator temperature

3 = "cabinet temperature - evaporator temperature"

4 = temperature detected by the auxiliary probe (only if P4 = 1, 2 or 4)

quantity displayed by the remote indicator

0 = if P4 = 0, 1, 2 or 3, cabinet temperature

if P4 = 4, CPT temperature

1 = operational setpoint

2 = evaporator temperature

3 = "cabinet temperature - evaporator temperature"

4 = temperature detected by the auxiliary probe (only if P4 = 1, 2 or 4)

percentage of air on temperature for calculating the CPT temperature (only if P4 = 4)

MAIN CONTROLLER

operational setpoint differential

minimum operational setpoint

maximum operational setpoint

block operational setpoint change (with the procedure indicated in paragraph 3.2)

1 = YES

temperature increase during Energy Saving function (only if P4 = 3 and i5 = 2 or 3); refer also to HE1 and HE2

COMPRESSOR PROTECTIONS (3)

compressor delay from device power on (4)

minimum time between two successive compressor operations; also compressor delay on resolution of cabinet probe error (if P4 = 4, also on resolution of auxiliary, air off

probe error) (5) (6)

minimum compressor shut-down time (5)

minimum compressor start-up time

duration of compressor shut-down during cabinet probe error (if P4 = 4, also during auxiliary probe, air off probe error); see also C5

duration of compressor start-up during cabinet probe error (if P4 = 4, also during auxiliary probe, air off probe error); see also C4

condenser temperature above which the condenser overheating alarm is activated (only if P4 = 2) (7)

condenser temperature above which the compressor block alarm is activated (only if P4 = 2)

compressor block alarm delay (only if P4 = 2) (8)

compressor 2 delay from power up of compressor 1 (only if u1 = 3)

number of hours of compressor operation above which maintenance request is indicated

0 = no function

DEFROSTING

defrost interval (only if d8 = 0, 1 or 2) (9)

0 = regular periodic defrosting will never be activated

type of defrosting

0 = electric

1= hot gas

defrost end temperature (only if P3 = 1)

defrost duration if P3 = 0 or 2; maximum defrost duration if P3 = 1

0 = defrosting will never be activated

defrosting at device power on (only if d8 = 1, 2 or 3) (4)

1 = YES

defrost delay from device power on (only if d4 = 1); see also i5 (4)

temperature displayed during defrosting (only if P5 = 0)

0 = cabinet temperature (if P4 = 4, CPT temperature)

1 = if, on activation of defrosting the cabinet temperature (if P4 = 4, the CPT temperature) is below the "operational setpoint + r0", at most "operational setpoint + r0"; if on

activation of defrosting the cabinet temperature (if P4 = 4, the CPT temperature) is above the "operational setpoint + r0", at most the cabinet temperature (if P4 = 4, the CPT

temperature) at activation of defrosting (10)

drip-drain duration

method of activation of defrosting

0 = PERIODIC - defrosting will be activated when the device has been left running for the length of time d0

1 = PERIODIC - defrosting will be activated when the compressor has been running for the length of time d0

2 = PERIODIC - defrosting will be activated when the evaporator temperature remains below the temperature set by d9 for the amount of time et by d0 (11)

3 = REAL TIME - defrosting will be activated at the times established by parameters Hd1 ... Hd6

the evaporator temperature above which the defrost interval count is suspended (only if d8 = 2)

Evco S.p.A. • Code 104K004E05 • page 5/6

d10 0 1 - - - - 0

d11 -99,0 99,0 °C/°F (1) 2,0

dA 0 99 min 0

PARAM. MIN. MAX. U.O.M. DEF.

A0 0 2 - - - - 0

A1 -99,0 99,0 °C/°F (1) -10,0

A2 0 2 - - - - 1

A3 0 1 - - - - 0

A4 -99,0 99,0 °C/°F (1) 10,0

A5 0 2 - - - - 1

A6 0 240 min 120

A7 0 240 min 15

A8 0 240 min 15

A9 0 240 min 15

AA 0 240 min 1

PARAM. MIN. MAX. U.O.M. DEF.

F0 0 4 - - - - 1

F1 -99,0 99,0 °C/°F (1) -1,0

F2 0 2 - - - - 0

F3 0 15 min 2

PARAM. MIN. MAX. U.O.M. DEF.

i0 0 5 - - - - 1

i1 0 1 - - - - 0

i2 -1 120 min 30

i3 -1 120 min 15

i4 0 1 - - - - 0

i5 0 7 - - - - 4

i6 0 1 - - - - 0

auxiliary probe (air off probe) function during evaporator probe error (only if P4 = 4); also auxiliary probe (air off probe) function when the evaporator probe is absent (only

if P4 = 4)

0 = auxiliary probe (air off probe); in this case:

DURING EVAPORATOR PROBE ERROR:

• if parameter P3 is set to 1, defrosting will last for the duration established by parameter d3

• if parameter P3 is set to 1 and parameter d8 is set to 2, the device will operate as though parameter d8 was set to 0

• if parameter F0 is set to 3 or 4, the device will operate as though the parameter was set to 2

WHEN THERE IS NO EVAPORATOR PROBE:

• defrosting will last for the length of time established by parameter d3

• if parameter d8 is set to 2, the device will operate as though parameter d8 was set to 0

• if parameter F0 is set to 3 or 4, the device will operate as though the parameter was set to 2

1 = like both auxiliary probe(air off probe) and evaporator probe

DURING EVAPORATOR PROBE ERROR:

• the defrost end temperature will depend on parameter d11

• if parameter P3 is set to 1 and parameter d8 is set to 2, the device will operate as though parameter d8 was set to 0

• if parameter F0 is set to 3 or 4, the device will operate as though the parameter was set to 2

WHEN THERE IS NO EVAPORATOR PROBE:

• the defrost end temperature will depend on parameter d11

• if parameter d8 is set to 2, the device will operate as though parameter d8 was set to 0

• if parameter F0 is set to 3 or 4, the device will operate as though the parameter was set to 2

defrost end temperature during evaporator probe error (only if P4 = 4 and d10 = 1); also defrost end temperature when there is no evaporator probe (only if P4 = 4 and

d10 = 1)

minimum compressor on duration on activation of defrosting so that they may be activated (only if d1 = 1) (12)

TEMPERATURE ALARMS

temperature associated with the minimum temperature alarm

0 = if P4 = 0, 1, 2 or 3, cabinet temperature; if P4 = 4, CPT temperature

1 = evaporator temperature (13)

2 = temperature detected by the auxiliary probe (only if P4 = 1, 2 or 4) (14)

the temperature below which the minimum temperature alarm is activated; see also A0 and A2 (7)

minimum temperature alarm type

0 = no alarm

1 = in relation to the operational setpoint (i.e. "operational setpoint - A1"; consider A1 to be without sign)

2 = absolute (i.e. A1)

temperature associated with the maximum temperature alarm

0 = if P4 = 0, 1, 2 or 3, cabinet temperature

if P4 = 4, CPT temperature

1 = temperature detected by the auxiliary probe (only if P4 = 1, 2 or 4) (14)

the temperature above which the maximum temperature alarm is activated; see also A3 and A5 (7)

maximum temperature alarm type

0 = no alarm

1 = in relation to the operational setpoint (i.e. "operational setpoint + A4"; consider A4 to be without sign)

2 = absolute (i.e. A4)

maximum temperature alarm delay on switching on device (only if A3 = 0 or if P4 = 1 and A3 = 1) (4)

temperature alarm delay

maximum temperature alarm delay on conclusion of evaporator fan stop (only if A3 = 0 or if P4 = 1 and A3 = 1) (15)

maximum temperature alarm delay on microport input deactivation (only if A3 = 0 or if P4 = 1 and A3 = 1) (16)

delay recording of power failure alarm

EVAPORATOR FAN

evaporator fan activity during normal operation

0 = off

1 = on

2 = in parallel with compressor

3 = dependent on F1 (17)

4 = off if the compressor is off, dependent on F1 if the compressor is on (17)

evaporator temperature above which the evaporator fan is switched off (only if F0 = 3 or 4) (7)

evaporator fan activity during defrosting and drip-draining

0 = off

1 = on (it is recommended that parameter d7 be set to 0)

2 = dependent on F0

evaporator fan stop duration

DIGITAL INPUTS

effect caused by activation of microport input; see also i4

0 = no effect

1 = the cabinet light will be switched on (only if u1 = 0, until the input is deactivated)

2 = the evaporator fan will be switched off (for up to the length of time set by i3 or until the input is deactivated)

3 = the compressor and evaporator fan will be switched off (for up to the length of time set by i3 or until the input is deactivated) (18)

4 = the evaporator fan will be switched off (for up to the length of time set by i3 or until the input is deactivated) and the cabinet light will be switched on (only if u1 = 0, until

the input is deactivated)

5 = the compressor and evaporator fan will be switched off (for up to the length of time set by i3 or until the input is deactivated) and the cabinet light will be switched on (only

if u1 = 0, until the input is deactivated) (18)

microport input contact type

0 = NA (input active with contact closed)

1 = NC (input active with contact open)

microport input alarm signal delay

-1 = the alarm will not be reported

maximum duration of the effect caused by activation of the microport input on the compressor and on the evaporator fan

-1 = the effect will last until the input will be disabled

recording of microport input alarm (19)

1 = YES

effect caused by activation of the multifunction input (only if P4 = 3)

0 = no effect

1 = DEFROST SYNCHRONISATION - after the period of time set by d5 defrosting will be activated

2 = ACTIVATION OF ENERGY SAVING FUNCTION - the Energy Saving function will be activated (until the input is deactivated); see also r4

3 = CLOSURE OF THE AWNING - the cabinet light will be turned off (only if u1 = 0 and only if switched on manually) and the Energy Saving function will be activated (until

the input is deactivated); see also r4

4 = ALARM ACTIVATION - after the amount of time set by i7 the display will flash the code "iA" and the buzzer will be activated (until the input is deactivated)

5 = TRIPPING THE PRESSURE SWITCH - the compressor will be switched off, the display will flash the code "iA" and the buzzer will be activated (until the input is deactivated);