Evco EV3802 User manual

EVCOS.p.A.|EV3802|Instructionsheetver.2.0|Code1043802E203|Page1of3|PT49/20
EV3802 Basic controllers for blast chillers
I ENGLISH
- 230 VAC or 115 VAC power supply (according to the model)
- cabinet probe and needle probe (PTC/NTC)
- door switch/multi-purpose input
- compressor relay 16 A res. @ 250 VAC
- alarm buzzer
- TTL MODBUS slave port for EVconnect app, EPoCA remote monitoring system or for
BMS
- operation with EV3KEY programming key.
Purchasing code Power supply
EV3802N7 230 VAC
EV3802N5 115 VAC
1 MEASUREMENTS AND INSTALLATION
Measurements in mm (inches). To be fitted to a panel, snap-in brackets provided.
INSTALLATION PRECAUTIONS
- the thickness of the panel must be between 0.8 and 2.0 mm (1/32 and 1/16 in)
- ensure that the working conditions are within the limits stated in the TECHNICAL
SPECIFICATIONS section
- do not install the device close to heat sources, equipment with a strong magnetic field,
in places subject to direct sunlight, rain, damp, excessive dust, mechanical vibrations
or shocks
- in compliance with safety regulations, the device must be installed properly to ensure
adequate protection from contact with electrical parts. All protective parts must be
fixed in such a way as to need the aid of a tool to remove them.
2 ELECTRICAL CONNECTION
N.B.
- use cables of an adequate section for the current running through them
- to reduce any electromagnetic interference, locate the power cables as far away as
possible from the signal cables.
PRECAUTIONS FOR ELECTRICAL CONNECTION
- if using an electrical or pneumatic screwdriver, adjust the tightening torque
- if the device is moved from a cold to a warm place, humidity may cause condensation
to form inside. Wait for about an hour before switching on the power
- make sure that the supply voltage, electrical frequency and power are within the set
limits. See the section TECHNICAL SPECIFICATIONS
- disconnect the power supply before carrying out any type of maintenance
- do not use the device as a safety device
- for repairs and for further information, contact the EVCO sales network.
3 FIRST-TIME USE
1. Carry out the installation following the instructions given in the section MEASUREMENTS
AND INSTALLATION.
2. Power up the device as set out in the section ELECTRICAL CONNECTION: an internal
test will start up.
The test normally takes a few seconds; when it is finished the display will switch off.
3. Configure the device as shown in the section Setting configuration parameters.
Recommended configuration parameters for first-time use:
PAR. DEF. PARAMETER MIN... MAX.
P0 1 type of probe 0 = PTC 1 = NTC
P2 0 temperature measurement unit 0 = °C 1 = °F
u0
1 auxiliary output configuration 0 = defrosting 1 = evaporator fans
Then check that the remaining settings are appropriate; see the section CONFIGURA-
TION PARAMETERS.
4. Disconnect the device from the mains.
5. Make the electrical connection as shown in the section ELECTRICAL CONNECTION,
without powering up the device.
6. For the connection in an RS-485 network connect the interface EVIF22TSX or
EVIF23TSX, to use the device with the EPoCA remote monitoring system, connect the
EVIF25TWX module, to use the device with the APP EVconnect connect the interface
EVIF25TBX; see the relevant instruction sheets. If EVIF22TSX or EVIF23TSX is
used, set parameter bLE to 0.
7. Power up the device again.
4 USER INTERFACE AND MAIN FUNCTIONS
4.1 Switching the device on/off
Power up/disconnect the device.
If the device is switched on and no cycle is active, the display will show the cabinet tempera-
ture.
If the display shows an alarm code, see the section ALARMS.
If no cycle is active, after 10 s have elapsed without the keys being pressed, the display will
automatically switch off, except for the low consumption LEDs.
When 60 s have elapsed without the keys being pressed, the display will show the “Loc" label
and the keypad will lock automatically.
LED ON OFF FLASHING
compressor switched on compressor switched off compressor protection in progress
defrost active
- dripping active
evaporator fans on
evaporator fans off evaporator fan delay in progress
temperature controlled
cycle active
- - temperature controlled cycle se-
lected
- test to check needle probe is
correctly inserted in progress;
when time controlled cycle LED
is on, test has failed and time
controlled cycle is active
- when alarm LED is on, blast
chilling/freezing has failed and
is active
- when alarm LED flashes, blast
chilling/freezing has failed and
conservation is active
conservation active
- - setpoint during conservation be- ing set
alarm active
- -
°C/°F
temperature displayed
- -
min time displayed - residual time maximum duration
of temperature controlled blast
chilling/freezing displayed
time controlled cycle is
selected - time controlled cycle active
4.2 Switching the display back on
Touch a key.
4.3 Unlocking the keypad
Touch a key for 1 s: the display will show the label “UnL”.
4.4 Activating an operating cycle
Check that the keypad is not locked and that defrosting is not active.
1. Touch the SET key to select a cycle.
LAB. LED DESCRIPTION
PoS time controlled blast chilling and conservation (if E0 = 0 or 1)
nEG time controlled blast freezing and conservation (if E0 = 1 or 2)
PoS temperature controlled blast chilling and conservation (if E0 = 0
or 1)
nEG temperature controlled blast freezing and conservation (if E0 = 1
or 2)
2. Touch the START/STOP key within 15 s.
4.5 Activating the last cycle carried out
Check that the keypad is not locked and that defrosting is not active.
1. Touch the SET key.
2. Touch the START/STOP key again within 15 s.
4.6 Interrupting an operating cycle
Check that the keypad is not locked.
1. Touch the START/STOP key for 2 s.
4.7 Setting the cabinet setpoint during conservation
Check that the keypad is not locked.
1. Touch the SET key.
2. Touch the UP or DOWN key within 15 s to set the value.
3. Touch the SET key (or take no action for 15 s).
The setting is temporary: when a new cycle is activated (and after a power failure), the device
will restore the r9/rA values.
4.8 Activating manual defrost
Check that the keypad is not locked and that blast chilling/freezing is not active.
1. Touch the UP key for 4 s.
4.9 Silencing the buzzer
Touch a key.
5 OPERATING CYCLES
5.1 Initial information
Cycles managed:
- time controlled blast chilling and conservation
- time controlled blast freezing and conservation
- temperature controlled blast chilling and conservation
- temperature controlled blast freezing and conservation.
Before each temperature controlled cycle, a test is run to check that the needle probe is cor-
rectly inserted.
The test consists of two phases: if the first one is completed successfully, the second one is not
carried out.
The first phase is completed successfully if [(needle temperature - cabinet temperature) >
threshold rc] 3 times out of 5, checked every 10 s. The second phase is completed successfully
if [(needle temperature - cabinet temperature) > 1 °C/°F] 6 times out of 8 (compared to previ-
ous test), checked every (duration rd/8) s.
If the test fails, the corresponding time controlled cycle is activated.
5.2 Activating time controlled blast chilling/freezing and conservation
Check that the keypad is not locked and that defrosting is not active.
1. Touch the SET key to select a cycle.
LAB. LED DESCRIPTION
PoS time controlled blast chilling and conservation (if E0 = 0 or 1)
nEG time controlled blast freezing and conservation (if E0 = 1 or 2)
2. Touch the DOWN key within 15 s to see the duration of the blast
chilling/freezing.
3. Touch the SET key.
4. Touch the UP or DOWN key within 15 s to set the value.
5. Touch the SET key (or take no action for 15 s).
6. Touch the DOWN key within 15 s to see the cabinet setpoint dur-
ing blast chilling/freezing.
7. Touch the SET key.
8. Touch the UP or DOWN key within 15 s to set the value.
9. Touch the SET key (or take no action for 15 s).
10. Touch the DOWN key within 15 s to see the cabinet setpoint dur-
ing conservation.
11. Touch the SET key.
12. Touch the UP or DOWN key within 15 s to set the value.
13. Touch the SET key (or take no action for 15 s).
14. Touch the START/STOP key within 15 s.
The settings are temporary: when a new cycle is activated (and after a power failure), the de-
vice will restore the r1/r2, r7/r8 and r9/rA values.
Information about the active cycle
PHASE DISPLAY
blast chilling/freezing ac-
tive residual time blast chilling/freezing cycle
end blast chilling/freezing End (press a key)
conservation active cabinet temperature
Viewing other information about the active cycle
Check that the keypad is not locked.
1. Touch the DOWN key to view the type of active cycle.
LAB. LED DESCRIPTION
PoS time controlled blast chilling and conservation
nEG time controlled blast freezing and conservation
2. Touch the DOWN key again to view the cabinet temperature.
3. Touch the SET key (or take no action for 15 s) to exit the proce-
dure.
After a power failure during a cycle, the cycle is automatically reactivated from the phase it was
in at the moment the power failed. If power fails during blast chilling/freezing, the count is re-
sumed with a maximum error of 10 min.
5.3 Activating temperature controlled blast chilling/freezing and conservation
Check that the keypad is not locked and that defrosting is not active.
1. Touch the SET key to select a cycle.
LAB. LED DESCRIPTION
PoS temperature controlled blast chilling and conservation (if E0 = 0
or 1)
nEG temperature controlled blast freezing and conservation (if E0 = 1
or 2)
2. Touch the DOWN key within 15 s to view the product tempera-
ture at the end of blast chilling/freezing.
3. Touch the SET key.
4. Touch the UP or DOWN key within 15 s to set the value.
5. Touch the SET key (or take no action for 15 s).
6. Touch the DOWN key within 15 s to view the maximum duration
of blast chilling/freezing.
7. Touch the SET key.
8. Touch the UP or DOWN key within 15 s to set the value.
9. Touch the DOWN key within 15 s to view the cabinet setpoint
during blast chilling/freezing.
10. Touch the SET key.
11. Touch the UP or DOWN key within 15 s to set the value.
12. Touch the SET key (or take no action for 15 s).
13. Touch the DOWN key within 15 s to view the cabinet setpoint
during conservation.
14. Touch the SET key.
15. Touch the UP or DOWN key within 15 s to set the value.
16. Touch the SET key (or take no action for 15 s).
17. Touch the START/STOP key within 15 s.
The settings are temporary: when a new cycle is activated (and after a power failure), the de-
vice will restore the r3/r4, r5/r6, r7/r8 and r9/rA values.
If the temperature of the needle does not reach the product temperature at the end of blast
chilling/freezing within the maximum duration of blast chilling/freezing, the cycle fails and re-
mains active.
Information about the active cycle
PHASE INFORMATION DISPLAYED
blast chilling/freezing ac-
tive needle temperature
end blast chilling/freezing End (press a key)
conservation active cabinet temperature
Viewing other information about the active cycle
Check that the keypad is not locked.
1.
Touch the DOWN key to view the remaining time of the maxi-
mum duration of the blast chilling/freezing cycle (or the elapsed
time from the end of the maximum duration of the blast
chilling/freezing cycle if it has failed).
2. Touch the DOWN key again to view the type of active cycle.
LAB. LED DESCRIPTION
PoS temperature controlled blast chilling and conservation

EVCOS.p.A.|EV3802|Instructionsheetver.2.0|Code1043802E203|Page2of3|PT49/20
nEG temperature controlled blast freezing and conservation
3. Touch the DOWN key again to see the cabinet temperature.
4. Touch the SET key (or take no action for 15 s) to exit the proce-
dure.
After a power failure during a cycle, the cycle is automatically reactivated from the phase it was
in at the moment the power failed. If power fails during blast chilling/freezing, it is reactivated
from the beginning.
5.4 Activating the last cycle carried out
Check that the keypad is not locked and that defrosting is not active.
1. Touch the START/STOP key for 2 s.
2.
Touch the START/STOP key within 60 s: the display will show the
duration of the time controlled blast chilling/freezing or the prod-
uct temperature at the end of the temperature controlled blast
chilling/freezing.
3. Touch the SET key.
4. Touch the UP or DOWN key within 15 s to set the value.
5. Touch the SET key (or take no action for 15 s).
6. Touch the START/STOP key again within 15 s.
The settings are temporary: when a new cycle is activated (and after a power failure), the de-
vice will restore the r1/r2 and r3/r4 values.
5.5 Interrupting an operating cycle
Check that the keypad is not locked.
1. Touch the START/STOP key for 2 s.
6 ADDITIONAL FUNCTIONS
6.1 Viewing compressor and evaporator fan status
Check that the keypad is not locked.
1. Touch the DOWN key once (to view compressor status) or twice
(to view evaporator fan status).
LAB. MEANING FOR COMPRESSOR
C-1 compressor on
C-0 compressor off
C-P compressor protection in progress
LAB. MEANING FOR EVAPORATOR FANS (if u0 = 1)
F-1 evaporator fans on
F-0 evaporator fans off
F-P evaporator fan delay in progress
2. Touch the SET key (or take no action for 15 s) to exit the proce-
dure.
7 SETTINGS
7.1 Setting first level configuration parameters
1. Touch the SET key for 4 s: the display will show the label “PA”.
2. Touch the UP or DOWN key to select a parameter.
3. Touch the SET key.
4. Touch the UP or DOWN key within 15 s to set the value.
5. Touch the SET key (or take no action for 15 s).
6. Touch the SET key for 4 s (or take no action for 60 s) to exit the
procedure.
7.2 Setting second level configuration parameters
1. Touch the SET key for 4 s: the display will show the label “PA”.
2. Touch the SET key.
3. Touch the UP or DOWN key within 15 s to set the PAS value (de-
fault “-19”).
4. Touch the SET key (or take no action for 15 s): the display will
show the label “CA1”.
5. Touch the UP or DOWN key to select a parameter.
6. Touch the SET key.
7. Touch the UP or DOWN key within 15 s to set the value.
8. Touch the SET key (or take no action for 15 s).
9. Touch the SET key for 4 s (or take no action for 60 s) to exit the
procedure.
7.3 Restoring factory (default) settings and saving customised settings
N.B.
- check that the factory settings are appropriate; see the section CONFIGURATION
PARAMETERS.
- saving customised settings overwrites the factory settings.
1. Touch the SET key for 4 s: the display will show the label “PA”.
2. Touch the SET key.
3. Touch the UP or DOWN key within 15 s to set the value.
VAL. MEANING
149 value for restoring the factory information (default)
161 value for saving customised settings
4.
Touch the SET key (or take no action for 15 s): the display will
show the label “dEF” (for setting the “149” value) or the label
“MAP” (for setting the “161” value).
5. Touch the SET key.
6. Touch the UP or DOWN key within 15 s to set “4”.
7.
Touch the SET key (or take no action for 15 s): the display will
show “- - -” flashing for 4 s, after which the device will exit the
procedure.
8. Disconnect the device from the power supply.
9. Touch the SET key for 2 s before action 6 to exit the procedure
beforehand.
8 CONFIGURATION PARAMETERS
8.1 First level parameters
NO. PAR. DEF. REGULATION MIN... MAX.
8 r0 2.0 r7, r8, r9 and rA differential 1... 15 °C/°F
9
r1 90 duration time controlled blast chilling 1... 600 min
10
r2 240 duration time controlled blast freezing 1... 600 min
11 r3 3.0 product temperature at end of
temperature controlled blast
chilling
-99... 99 °C/°F
12 r4 -18.0 product temperature at end of
temperature controlled blast
freezing
-99... 99 °C/°F
13
r5 90 maximum duration temperature controlled blast chilling 1... 600 min
14
r6 240 maximum duration temperature controlled blast freezing 1... 600 min
15
r7 0.0 cabinet setpoint during blast chilling -99... 99 °C/°F
16
r8 -40.0 cabinet setpoint during blast freezing -99... 99 °C/°F
17
r9 2.0 cabinet setpoint during conserva- tion after blast chilling -99... 99 °C/°F
18
rA -20.0 cabinet setpoint during conserva- tion after blast freezing -99... 99 °C/°F
8.2 Second level parameters
NO. PAR. DEF. ANALOGUE INPUTS MIN... MAX.
1 CA1 0.0 cabinet probe offset -25... 25 °C/°F
2 CA2 0.0 needle probe offset -25... 25 °C/°F
3 P0 1 type of probe 0 = PTC 1 = NTC
4 P1 1 enable decimal point °C 0 = no 1 = yes
5 P2 0 temperature measurement unit 0 = °C 1 = °F
6 P3 1 enable needle probe 0 = no 1 = yes
7 P8 5 display refresh time 0... 250 s : 10
NO. PAR. DEF. REGULATION MIN... MAX.
8 r0 2.0 r7, r8, r9 and rA differential 1... 15 °C/°F
9
r1 90 duration time controlled blast chilling 1... 600 min
10
r2 240 duration time controlled blast freezing 1... 600 min
11 r3 3.0 product temperature at end of
temperature controlled blast
chilling
-99... 99 °C/°F
12 r4 -18.0 product temperature at end of
temperature controlled blast
freezing
-99... 99 °C/°F
13
r5 90 maximum duration temperature controlled blast chilling 1... 600 min
14
r6 240 maximum duration temperature controlled blast freezing 1... 600 min
15
r7 0.0 cabinet setpoint during blast chilling -99... 99 °C/°F
16
r8 -40.0 cabinet setpoint during blast freezing -99... 99 °C/°F
17
r9 2.0 cabinet setpoint during conserva- tion after blast chilling -99... 99 °C/°F
18
rA -20.0 cabinet setpoint during conserva- tion after blast freezing -99... 99 °C/°F
19 rb 1 type of cycle enabled 0 = blast chilling and con-
servation
1 = blast chilling/freezing
and conservation
2 = blast freezing and con-
servation
20 rc 5.0 minimum gap to pass first phase
of needle probe test
0... 99 °C/°F
0 = disabled
first phase ok if [(needle
temperature - cabinet tem-
perature) > rc] 3 times out of
5, checked every 10 s
21 rd 60 duration second phase needle
probe test
1... 99 s
second phase ok if [(needle
temperature - cabinet tem-
perature) > 1 °C/°F] 6 times
out of 8 (compared to previ-
ous test), checked every
(rd/8) s
NO. PAR. DEF. COMPRESSOR MIN... MAX.
22
C0 3 compressor-on delay from cycle activation and power-on 0... 240 min
23
C1 5 delay between two compressor switch-ons 0... 240 min
24 C2 3 minimum compressor-off time 0... 240 min
25 C3 0 minimum compressor-on time 0... 240 s
26
C4 10 compressor-off time in cabinet probe alarm during conservation 0... 240 min
27 C5 10 compressor-on time in cabinet
probe alarm during conservation
after blast chilling
0... 240 min
28 C6 20 compressor-on time in cabinet
probe alarm during conservation
after blast freezing
0... 240 min
29 C11 0 needle probe function in event of
cabinet probe error
0 = needle probe
1 = needle probe and cabi-
net probe
NO. PAR. DEF. DEFROST MIN... MAX.
30
d0 8 automatic defrost interval 0... 99 h 0 = manual only
31 d3 30 defrost duration 0... 99 min
32 d7 2 dripping time 0... 15 min
NO.
PAR. DEF. ALARMS (active during conserva- tion) MIN... MAX.
33 A1 10.0 low temperature alarm threshold
(relative to r9 and rA)
0... 99 °C/°F
r9 - A1 and rA - A1
differential = 2 °C/4 °F
34 A2 1 enable low temperature alarm 0 = no 1 = yes
35 A4 10.0 high temperature alarm thresh-
old (relative to r9 and rA)
0... 99 °C/°F
r9 + A4 and rA + A4
differential = 2 °C/4 °F
36 A5 1 enable high temperature alarm 0 = no 1 = yes
37
A6 15 high/low temperature alarm de- lay from conservation 0... 240 min
38
A7 15 high/low temperature alarm de- lay 0... 240 min
39
A8 15 high temperature alarm delay post-defrosting 0... 240 min
40
A9 15 high temperature alarm delay from door closure 0... 240 min if i0 = 0 or 1
41
AA 5 buzzer duration after blast chilling/freezing 0... 240 s
NO.
PAR. DEF. EVAPORATOR FANS (always on during defrosting) MIN... MAX.
42
F0 2 evaporator fan mode during blast chilling/freezing 0 = off 1 = on 2 = on if compressor on
43
F2 1 evaporator fan mode during con- servation 0 = off 1 = on 2 = on if compressor on
44
F8 0 evaporator fan delay from de- frost activation 0... 99 min
NO. PAR. DEF. DIGITAL INPUTS MIN... MAX.
45 i0 1 door switch/multi-purpose input
function
0 = evaporator fans off
1 = compressor + evapora-
tor fans off
2 = alarm iA
3 = after 10 s evaporator
fans off
4 = after 10 s compressor +
evaporator fans off
46 i1 0 activation door switch/multi-
purpose input
0 = with contact closed
1 = with contact open
2 = disabled
47 i2 30 door open alarm delay -1... 120 min
-1 = disabled
if i0 = 0 or 1
48 i3 15 maximum time for inhibiting reg-
ulation with door open
-1... 120 min
-1 = until closed
if i0 = 0 or 1
49
i7 0 compressor-on delay from multi- purpose input alarm reset -1... 120 min -1 = disabled
NO. PAR. DEF. DIGITAL OUTPUTS MIN... MAX.
50
u0 0 auxiliary output configuration 0 = defrosting 1 = evaporator fans
N. PAR. DEF. DATA-LOGGING EVLINK MIN... MAX.
51 Hr0 - unused -
52 bLE 1 serial port configuration for con-
nectivity
0 = free
1 = forced for EVconnect or
EPoCA
2-99= EPoCA local network
address
53 rE0 15 data-logger sampling interval 0... 240 min
NO. PAR. DEF. MODBUS MIN... MAX.
52 LA 247 MODBUS address 1... 247
53 Lb 2 MODBUS baud rate 0 = 2,400 baud
1 = 4,800 baud
2 = 9,600 baud
3 = 19,200 baud
54
LP 2 MODBUS parity 0 = none 1 = odd 2 = even
NO. PAR. DEF. MODBUS MIN... MAX.
55 E0 247 quick setting of value during cy-
cle activation
0 = disabled
1 = duration of time con-
trolled blast
chilling/freezing or
product temperature at
end of temperature con-
trolled blast
chilling/freezing
2 = duration of time con-
trolled blast
chilling/freezing and/or
cabinet setpoint during
blast chilling/freezing
3 = duration of time con-
trolled blast
chilling/freezing and
cabinet setpoint during
blast chilling/freezing or
product temperature at
end of temperature con-
trolled blast
chilling/freezing and
cabinet setpoint during
blast chilling/freezing
56 E9 - unused -
NO. PAR. DEF. SECURITY MIN... MAX.
57 PAS -19 password -99... 999
58 PA1 426 level 1 password -99... 999
59 PA2 824 level 2 password -99... 999
9 ALARMS
CODE
MEANING RESET TO CORRECT
Pr1 cabinet probe alarm automatic - check P0
Pr2 needle probe alarm automatic - check integrity of the probe
- check electrical connection
AL low temperature alarm automatic check A1 and A2
AH high temperature alarm automatic check A4 and A5
id door open alarm automatic check i0 and i1
iA multi-purpose input alarm automatic check i0 and i1
10 TECHNICAL SPECIFICATIONS
Purpose of the control device: function controller.
Construction of the control device: built-in electronic device.
Housing: black, self-extinguishing.
Category of heat and fire resistance: D.
Measurements:
75.0 x 33.0 x 59.0 mm (2 15/16 x 1 5/16 x
2 5/16 in) with fixed screw terminal blocks 75.0 x 33.0 x 81.5 mm (2 15/16 x 1 5/16 x 3 3/16 in) with plug-in screw terminal blocks
Mounting methods for the control device:
to be fitted to a panel, snap-in brackets pro- vided
Degree of protection provided by the casing: IP65 (front).
Connection method:
fixed screw terminal blocks for
wires up to 2.5 mm²
plug-in screw terminal blocks
for wires up to
2.5 mm² (on request)
Pico-Blade connector.
Maximum permitted length for connection cables:
power supply: 10 m (32.8 ft) analogue inputs: 10 m (32.8 ft)
digital inputs: 10 m (32.8 ft) digital outputs: 10 m (32.8 ft).
Operating temperature: from 0 to 55 °C (from 32 to 131 °F)
Storage temperature: from -25 to 70 °C (from -13 to 158 °F).
Operating humidity:
relative humidity without condensate from 10 to 90%.
Pollution status of the control device: 2.
Compliance:
RoHS 2011/65/EC
WEEE 2012/19/EU REACH (EC) Regulation no. 1907/2006
EMC 2014/30/EU LVD 2014/35/EU.
Power supply:
230 VAC (+10% -15%), 50/60 Hz (±3 Hz),
max. 2 VA insulated in EV3... N7 115 VAC (+10% -15%), 50/60 Hz (±3 Hz), max. 2 VA insulated in EV3... N5.
Earthing methods for the control device: none.
Rated impulse-withstand voltage: 4 KV.
Over-voltage category: III.
Software class and structure: A.
Analogue inputs:
2 for PTC or NTC probes (cabinet probe and needle probe).
PTC probes: Type of sensor: KTY 81-121 (990 @ 25 °C, 77 °F)
Measurement field: from -50 to 150 °C (from -58 to 302 °F)
Resolution: 0.1 °C (1 °F).
NTC probes: Type of sensor: ß3435 (10 K@ 25 °C, 77 °F)
Measurement field: from -40 to 105 °C (from -40 to 221 °F)
Resolution: 0.1 °C (1 °F).
Digital inputs: 1 dry contact (door switch/multi-purpose).
Dry contact: Type of contact: 5 VDC, 1.5 mA
Power supply: none
Protection: none.
Digital outputs:
2 with electro-mechanical relay (compressor and auxiliary relay).
Compressor relay (K1): SPST, 16 A res. @ 250 VAC
Auxiliary relay (K2): SPDT, 8 A res. @ 250 VAC.
Type 1 or Type 2 actions: type 1.
Additional features of Type 1 or Type 2 ac-
tions: C.
Displays: custom display, 3 digit, with function icons.
Alarm buzzer: built-in.
Communications ports: 1 TTL MODBUS slave port for EVconnect app,
EPoCA remote monitoring system or for
BMS.

EVCOS.p.A.|EV3802|Instructionsheetver.2.0|Code1043802E203|Page3of3|PT49/20
N.B.
The device must be disposed of according to local regulations governing the collection
of electrical and electronic equipment.
This document and the solutions contained therein are the intellectual property of EVCO and thus pro-
tected by the Italian Intellectual Property Rights Code (CPI). EVCO imposes an absolute ban on the full
or partial reproduction and disclosure of the content other than with the express approval of EVCO. The
customer (manufacturer, installer or end user) assumes all responsibility for the configuration of the de-
vice.
EVCO accepts no liability for any possible errors in this document and reserves the right to make any
changes at any time without prejudice to the essential functional and safety features of the equipment.
EVCO S.p.A.
Via Feltre 81, 32036 Sedico (BL) ITALY
Tel. [phone] | Fax [phone]
email [email protected] | web www.evco.it