EVCO EVK802P7 User Manual

Page 2

EVCO S.p.A.

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Evco does not take any responsibility about features, technical data and possible mistakes related in this document or coming by its use.

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.

[email protected] • 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.

PT • 48/10

CONFIGURATION PARAMETERS

9.1 First level configuration parameters
PARAM. MIN.

MAX.

M.U.

DEF.

0,1

15,0

°C/°F (1) 2,0

600

min

600

min

240

-99,0

99,0

°C/°F (1) 3,0

-99,0

99,0

°C/°F (1) -18,0

600

min

600

min

240

-99,0

99,0

°C/°F (1) 0,0

-99,0

99,0

°C/°F (1) -40,0

-99,0

99,0

°C/°F (1) 2,0

-99,0

99,0

°C/°F (1) -20,0

9.2 Second level configuration parameters
PARAM. MIN.

MAX.

M.U.

DEF.

CA1

-25,0

25,0

°C/°F (1) 0,0

CA2

-25,0

25,0

°C/°F (1) 0,0

- - -

PARAM. MIN.

MAX.

M.U.

DEF.

0,1

15,0

°C/°F (1) 2,0

600

min

600

min

240

-99,0

99,0

°C/°F (1) 3,0

-99,0

99,0

°C/°F (1) -18,0

600

min

600

min

240

ALARMS

6.1 Alarms

CODE MESSAGE

Minimum temperature alarm
Remedies:
• check the cabinet temperature
• check parameters A1 and A2
Consequences:
• the device will continue to function normally

Maximum temperature alarm
Remedies:
• check the cabinet temperature
• check parameters A3 and A4
Consequences:
• the device will continue to function normally

Micro-port input alarm (only in "stand-by" mode and if
parameter i0 is set to 0 or 1)
Remedies:
• check the causes which activated the input
• check parameters i0 and i1
Consequences:
• the outcome set by parameter i0

Compressor protection input alarm (only if parameter i0 is
set to 2)
Remedies:
• check the causes which activated the input
• check parameters i0 and i1
Consequences:
• the compressor will be shut down

When the cause that triggered the alarm has been resolved, the device
restores normal operation.
7

INTERNAL DIAGNOSTICS

7.1 Internal diagnostics

CODE MESSAGE

Pr1

Cabinet probe error
Remedies:
• see P0 parameter
• check probe integrity
• check probe-device connection
• check the cabinet temperature
Consequences if the error occurs while in "stand-by" mode:
• if parameter C11 is set to 0, it will not be possible to start

any of the cycles

• if parameter C11 is set to 1, the pin probe will function as

the cabinet probe and only timed cycles will be allowed
to start

Consequences if the error occurs during a timed chilling
operation:
• if parameter C11 is set to 0, the cycle will be interrupted
• if parameter C11 is set to 1, the pin probe will function as

the cabinet probe and the chilling operation will con-
tinue

Consequences if the error occurs during a set-temperature
chilling operation:
• if parameter C11 is set to 0, the cycle will be interrupted
• if parameter C11 is set to 1, the pin probe will function as

both the cabinet probe and pin probe and the chilling
operation will continue

Consequences if the error occurs during a storage opera-
tion:
• parameter C11 is set to 0, the compressor activity will

depend on parameters C4, C5 and C6

• if parameter C11 is set to 1, the pin probe will function as

the cabinet probe and the storage operation will con-
tinue

Pr2

Pin probe error
Remedies:
• the same as for the previous case, but in relation to the pin

probe

Consequences if the error occurs while in "stand-by" mode:
• only timed operation cycles will be allowed to start
Consequences if the error occurs during a timed chilling
operation:
• chilling will continue
Consequences if the error occurs during a set-temperature
chilling operation:
• chilling will continue in timed mode
Consequences if the error occurs during storage mode:
• storage will continue

TECHNICAL DATA

8.1 Technical data
Case: grey self-extinguishing.
Front panel protection classification (use copper conduc-
tors only): IP 65.
Connections: Screw terminal blocks (power supply, inputs and out-
puts), 6 pin connector (serial port; available on request); extractable
terminal block (power supply, inputs and outputs) available on re-
quest.
Operating temperature: from 0 to 55 ºC (10 ... 90% relative humid-
ity, without condensation).
Power supply: 230 VAC, 50/60 Hz, 3 VA (nominal); 115 VAC or
12-24 VAC/DC or 12 VAC/DC by request.
Insulation class: 2.
Alarm buzzer: integrated.
Sensor inputs: 2 (cabinet probe and pin probe) for PTC/NTC probes.
Digital inputs: 1 (door switch/multifunction) for NA/NC contact (clean
contact, 5 V 1 mA).
Sensor range: from -50.0 to 150.0 ºC for PTC probes, from -40.0 to
105.0 ºC for NTC probes.
Sensitivity: 0.1ºC/1ºC/1ºF.
Digital outputs: 2 relays:

• compressor relay: 16 A res. @250 VAC, 5 FLA,

30 LRA (NA contact) versions with 12 VAC/DC and
12-24 VAC/DC; 8 A res. @ 250 VAC, 2 FLA, 12 LRA
otherwise

• defrosting/evaporator fan relay: 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 communication
protocol) or with the programming key; available on request.

MAIN CONTROLLER
parameter r7, r8, r9 and Ra differential
timed positive blast chilling duration
timed negative blast chilling duration
positive blast chill end-point temperature (temperature detected by the pin probe)
negative blast chill end-point temperature (temperature detected by the pin probe)
set-temperature positive blast chilling maximum duration
set-temperature negative blast chilling maximum duration
positive blast chilling operational setpoint (cabinet temperature)
negative blast chilling operational setpoint (cabinet temperature)
post positive blast chill storage operational setpoint (cabinet temperature)
post negative blast chill storage operational setpoint (cabinet temperature)

SENSOR INPUTS
cabinet probe offset
pin probe offset
probe type
0 = PTC
1 = NTC
degree Celsius decimal point (for the quantity displayed during normal operation)
1 = YES
unit of temperature measurement (2)
0 = °C
1 = °F
pin probe enabling
1 = YES
MAIN CONTROLLER
parameter r7, r8, r9 and Ra differential
timed positive blast chilling duration
timed negative blast chilling duration
positive blast chill end-point temperature (temperature detected by the pin probe)
negative blast chill end-point temperature (temperature detected by the pin probe)
set-temperature positive blast chilling maximum duration
set-temperature negative blast chilling maximum duration

-99,0 99,0

°C/°F (1) 0,0

-99,0

99,0

°C/°F (1) -40,0

-99,0

99,0

°C/°F (1) 2,0

-99,0

99,0

°C/°F (1) -20,0

- - -

0,0

99,0

°C/°F (1) 5,0

PARAM. MIN.

MAX. M.U.

DEF.

240

min

240

min

240

min

240

min

240

min

240

min

C11

- - -

PARAM. MIN.

MAX. M.U.

DEF.

min

PARAM. MIN.

MAX. M.U.

DEF.

0,0

99,0

°C/°F (1) 10,0

- - -

0,0

99,0

°C/°F (1) 10,0

- - -

240

min

240

min

240

min

240

min

240

PARAM. MIN.

MAX. M.U.

DEF.

- - -

min

PARAM. MIN.

MAX. M.U.

DEF.

- - -

-1

120

min

-1

120

min

120

min

PARAM. MIN.

MAX. M.U.

DEF.

- - -

PARAM. MIN.

MAX. M.U.

DEF.

247

- - -

247

- - -

PARAM. MIN.

MAX. M.U.

DEF.

- - -

(1) the unit of measurement depends on parameter P2
(2) set the parameters relating to the controllers appropriately after altering parameter P2
(3) the device stores the defrost interval count every 30 minutes; altering parameter d0 has effect of concluding the previous defrost interval or

manual defrost activation

(4) the temperature alarm functions are only enabled during storage operations
(5) the parameter differential is 2.0 ºC/4 ºF
(6) there are no temperature alarms during defrosting and drip draining, if they occur following defrost activation
(7) there is no maximum temperature alarm while door switch input is enabled, if occurring after input activation
(8) the evaporator fan will be shut down providing defrosting is not ongoing
(9) the compressor and/or ventilator fan are shut down 10 s after input activation
(10) the compressor is shut down 10 s after input activation.

The device must be disposed of in accordance with local regulations pertaining to the collection of electrical and electronic appliances.

positive blast chilling operational setpoint (cabinet temperature)
negative blast chilling operational setpoint (cabinet temperature)
post positive blast chill storage operational setpoint (cabinet temperature)
post negative blast chill storage operational setpoint (cabinet temperature)
kind of cycle enabled
0 = positive chilling
1 = positive chilling and negative chilling
2 = negative chilling
"temperature detected by the pin probe - temperature of the cabinet" difference for the first stage of the
test to check correct pin probe insertion (see paragraph 3.6)
0 = test will not be performed (neither the first nor second stages)
duration of the second stage of the test to check correct pin probe insertion (see paragraph 3.6)
COMPRESSOR PROTECTION
operational cycle deferred compressor start-up; deferred compressor power restoration also follow-
ing a power interruption during an operational cycle
minimum elapsed time period between two consecutive compressor start-up operations
minimum compressor shut-down time
minimum compressor start-up time
storage cabinet probe error compressor shut-down duration; see also C5 and C6 (only if C11 = 0)
positive storage cabinet probe error compressor start-up duration; see also C4 (only if C11 = 0)
negative storage cabinet probe error compressor start-up duration; see also C4 (only if C11 = 0)
pin probe operation during cabinet probe error
0 = pin probe

IF THE ERROR OCCURS IN "STAND-BY" MODE - it will not be possible to start any of the cycles
IF THE ERROR OCCURS DURING A TIMED OR SET TEMPERATURE BLAST CHILLING OPERATION - the
cycle will be interrupted
IF THE ERROR OCCURS DURING A STORAGE OPERATION - compressor activity will depend on
parameters C4, C5 and C6

1 = both pin probe and cabinet probe

IF THE ERROR OCCURS WHILE IN "STAND-BY" MODE - the pin probe will operate as a cabinet probe
and it will only be possible to start timed cycles
IF THE ERROR OCCURS DURING TIMED BLAST CHILLING - the pin probe will operate as a cabinet
probe and chilling will continue
IF THE ERROR OCCURS DURING SET-TEMPERATURE BLAST CHILLING - the pin probe will operate as
both a pin probe and as a cabinet probe and chilling will continue; it is recommended to
set the i0 parameter to 2 (COMPRESSOR PROTECTION)
IF THE ERROR OCCURS DURING A STORAGE OPERATION - the pin probe will operate as a cabinet
probe and storage will continue

DEFROST
defrost interval (3)
0 = regular periodic defrosting will never be enabled
defrost duration
0 = defrosting will never be enabled
drip-drain duration
TEMPERATURE ALARMS (4)
the temperature below which the minimum temperature alarm is activated; see also A2 (5)
minimum temperature alarm type
0 = no alarm
1 = depending on parameters r9 and rA (or "r9 - A1" and "rA - A1")
the temperature above which the maximum temperature alarm is activated; see also A5 (5)
maximum temperature alarm type
0 = no alarm
1 = depending on parameters r9 and rA (or "r9 + A4" and "rA + A4")
storage operation start-up temperature alarm delay
temperature alarm delay
drip-drain end maximum temperature alarm delay (6)
door switch input deactivation maximum temperature alarm delay (only if i0 = 0 or 1) (7)
blast chill completion buzzer duration
EVAPORATOR FAN (only if u0 = 1)
evaporator fan activity during chilling
0 = off
1 = on
2 = in parallel with the compressor
evaporator fan activity during storage
0 = off
1 = on
2 = in parallel with the compressor
evaporator fan start-up delay following defrost cycle start
DIGITAL INPUTS
digital input operation
0 = DOOR SWITCH INPUT - in this case parameters i1, i2 and i3 assume significance; enabling input will

cause the evaporator fan to be shut down (at most for the period of time set by i3 or until input will
be disabled) (8) (9)

1 = DOOR SWITCH INPUT - in this case parameters i1, i2 and i3 assume significance; enabling input will

cause the compressor and evaporator fan to be shut down (at most for the period of time set by i3
or until input will be disabled) (8) (9)

2 = COMPRESSOR PROTECTION - in this case, parameters i1 and i7 assume significance; the compressor

will be shut-down, the display will flash code "iA" and the buzzer will be activated (until the input
will be deactivated)

3 = DOOR SWITCH INPUT - in this case parameters i1, i2 and i3 assume significance; enabling input will

cause the evaporator fan to be shut down (at most for the period of time set by i3 or until input will
be disabled) (8)

4 = DOOR SWITCH INPUT - in this case parameters i1, i2 and i3 assume significance; enabling input will

cause the compressor and evaporator fan to be shut down (at most for the period of time set by i3
or until input will be disabled) (8) (10)

digital input contact type
0 = NA (input active with contact closed)
1 = NC (input active with contact open)
2 = no input

door switch input alarm activation delay (solo se i0 = 0 o 1)
-1= the alarm will not sound
door switch input activation effect maximum duration (only if i0 = 0 or 1)
-1= the effect will last until the input will be disabled
compressor protection deactivation compressor delay (only if i0 = 2)
DIGITAL OUTPUTS
service controlled by relay K2 (see paragraph 2.3)
0 = defrosting
1 = evaporator fan
SERIAL NETWORK (MODBUS)
device address
baud rate
0 = 2.400 baud
1 = 4.800 baud
2 = 9.600 baud
3 = 19.200 baud
parity
0 = none (no parity)
1 = odd
2 = even
ENABLING
quantity modifiable quickly before starting the cycle
0 = no quantity
1 = if you have selected a timed chilling cycle, the chilling duration

if you have selected a set-temperature chilling cycle, the chilling end-point temperature

2 = if you have selected a timed chilling cycle, the chilling duration and the chilling operational

setpoint
if you have selected a set-temperature chilling cycle, the chilling operational setpoint

3 = if you have selected a timed chilling cycle, the chilling duration and the chilling operational

setpoint
if you have selected a set-temperature chilling cycle, the chilling end-point temperature and the
chilling operational setpoint

reserved