
EVCOS.p.A.|EV3B33N7VXRX04|Instructionsheetver.1.0|Code1043B33E103DRY|Page1of2|PT27/18
EV3B33N7VXRX04 Controller for refrigerator cycle dryer for compressed air
E ENGLISH
- Power supply 230 VAC or 115 VAC (according to the model).
- Exchanger probe (PTC/NTC).
- Multi-purpose input.
- Compressor relay 30 A res. @ 250 VAC.
- Cooling or heating operation.
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 connect 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 has been moved from a cold to a warm place, the humidity may have
caused condensation to form inside. Wait 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 doing any type of maintenance.
- Do not use the device as safety device.
- For repairs and for further information, contact the EVCO sales network.
3 FIRST-TIME
1. Install following the instructions given in the section MEASUREMENTS AND INSTALLA-
TION.
2. Power up the device as shown in the section ELECTRICAL CONNECTION and an internal
test will be run.
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 probe type 0 = PTC 1 = NTC
P2 0 temperature unit of measurement 0 = °C 1 = °F
r1
1.0
setpoint compressor off (after time
r3) -99 °C/°F... r2
r2 8.0 setpoint compressor on r1... 99 °C/°F
r3
10
consecutive time exchanger tempera-
ture lower than r1 for compressor off 0... 90 min
hot or cold mode regulation
1 = hot mode
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 with-
out powering up the device.
6. Power up the device.
4 USER INTERFACE AND MAIN FUNCTIONS
4.1 Switching the device on/off
1. If POF = 1, touch the ON/STAND-BY key for 4 s.
If the device is switched on, the display will show the exchanger temperature; if the display
shows an alarm code, see the section ALARMS.
LED ON OFF FLASHING
compressor on
compressor off
compressor protection active
reserved
-
-
condenser fan on
condenser fan off
-
HACCP
reserved
-
-
- low consumption ac-
tive
- compressor off
-
-
- request for compres-
sor service
- request for device
service
-
-
°C/°F
view temperature
-
-
AUX water pump on
water pump off
-
device off
device on
device on/off active
If 30 s have elapsed without the keys being pressed, the display will show the “Loc” label and
the keypad will lock automatically.
4.2 Unlock keypad
Touch a key for 1 s: the display will show the label “UnL”.
4.3 Switching off the alarm output (if u0 or u1 = 2 and A7 = 1)
Touch a key.
5 ADDITIONAL FUNCTIONS
5.1 View/delete compressor and device functioning hours
Check that the keypad is not locked.
1. Touch the DOWN key for 4 s.
2. Touch the UP or DOWN key within 15 s to select a label.
LAB. DESCRIPTION
hSE view compressor functioning hours
rhS delete compressor functioning hours
hFI view device functioning hours
rhF delete device functioning hours
rFI reset clogged filter alarm
3. Touch the SET key.
4. Touch the UP or DOWN key to set “149” (for selection rhF and
rFI) or “171” (for selection rhS).
5. Touch the SET key.
6. Touch the ON/STAND-BY key (or do not operate for 60 s) to exit
the procedure.
5.2 View the temperature detected by the probes
Check that the keypad is not locked.
1. Touch the DOWN key for 4 s.
2. Touch the UP or DOWN key within 15 s to select a label.
LAB. DESCRIPTION
Pb1 exchanger temperature
Pb2 condenser temperature
3. Touch the SET key.
4. Touch the ON/STAND-BY key (or do not operate for 60 s) to exit
the procedure.
5.3 Evacuation valve test
Check that the keypad is not locked.
1. Touch the UP key for 4 s: the valve will be switched on till the
key release, then it will cyclically work again.
6 SETTINGS
6.1 Setting 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 “10”).
4. Touch the SET key (or do not operate 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 do not operate for 15 s).
9. Touch the SET key for 4 s (or do not operate for 60 s) to exit the
procedure.
6.2 Restore the factory settings (default) and store customized settings as default
N.B.
- Check that the factory settings are appropriate; see the section CONFIGURATION
PARAMETERS.
- the storing of customized settings overwrites the default.
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. DESCRIPTION
149 value to restore the factory settings (default)
161 value to store customized settings as default
4.
Touch the SET key (or do not operate for 15 s): the display will
show the label “dEF” (when value “149” is set) or the label
“MAP” (when value “161” is set).
5. Touch the SET key.
6. Touch the UP or DOWN key within 15 s to set “4”.
7.
Touch the SET key (or do not operate for 15 s): the display will
show for 4 s “- - -“ flashing, then the device will exit the proce-
dure.
8. Interrupt the power supply to the device.
9. Touch the SET key 2 s before action 6. to exit the procedure be-
forehand.
7 CONFIGURATION PARAMETERS
N. PAR. DEF. ANALOGUE INPUTS MIN... MAX.
1 CA1 0.0 exchanger probe offset -25... 25 °C/°F
2 CA2 0.0 condenser probe offset -25... 25 °C/°F
3 P0 1 probe type 0 = PTC 1 = NTC
4 P1 0 enable °C decimal point 0 = no 1 = yes
5
P2
0
temperature unit of measure-
ment 0 = °C 1 = °F
6
P3
0
input Pb1 function
0 = exchanger probe
1 = exchanger probe + high
pressure input (in series,
activation with contact
open)
7 P4 5 display refresh time 0... 250 s : 10
N. PAR. DEF. REGULATION MIN... MAX.
8
r1
1.0
setpoint compressor off (after
time r3)
-99 °C/°F... r2
if r4 = 1, setpoint compressor
on
9
r2
8.0
setpoint compressor on
r1...199°C/°F
if r4 = 1, setpoint compressor
off (after time r3)
10
r3
10
consecutive time exchanger tem-
perature lower than r1 for com-
pressor off
0... 90 min
if r4 = 1, consecutive time
exchanger temperature ower
than r2 for compressor ofm
11
r4
0
cooling or heating operation
0 = cooling
1 = heating
12
r5
0.0
threshold for low temperature
display lock -99... r6 °C/°F
13
r6
5.0
threshold for high temperature
display lock r5... 99 °C/°F
14
r7 1 enable display lock 0 = no 1 = yes
N. PAR. DEF. COMPRESSOR MIN... MAX.
15
C1
1
compressor on delay after pow-
er-on 0... 240 min
16
C2 0 compressor off minimum time 0... 240 min
17
C3 0 compressor on minimum time 0... 240 s
18
C4
0
compressor off time during ex-
changer probe alarm 0... 240 min
19
C5
10
compressor on time during ex-
changer probe alarm 0... 240 min
20
C6
80.0
threshold for high condensation
warning 0... 199 °C/°F
differential A0
21
C7 90.0
threshold for high condensation
alarm 0... 199 °C/°F
22
C8 1 high condensation alarm delay 0... 15 min
23
C9
0
count mode
0 = device hours
1 = compressor hours
24
C10
200
compressor hours for service
0... 999 h x 100
0 = disabled
25
C11 20 suction temperature alarm delay 0... 60 min
N. PAR. DEF. ALLARMS MIN... MAX.
26
A0
1.0
A1, A3, C6 and F1 reset differen-
tial 0.1... 15 °C/°F
27
A1
0.0
threshold for low temperature
alarm -99... A3 °C/°F
28
A2 1 enable low temperature alarm 0 = no 1 = yes
29
A3
15.0
threshold for high temperature
alarm A1... 99 °C/°F
30
A4 1 enable low temperature alarm 0 = no 1 = yes
31
A5
1
high/low temperature alarms de-
lay 0... 240 min
32
A6
2
high/low temperature alarm de-
lay after power-on 0... 99 min x 10
33
A7
0
alarm output mode
0 = with alarm active
1 = with alarm active and
inactive touching a key
34
A8
0
count mode
0 = device hours
1 = compressor hours
35
A9
200
compressor hours for service
0... 999 h x 100
0 = disabled
N. PAR. DEF. FANS MIN... MAX.
36
F0
15.0
threshold for condenser fan on
0... 99 °C/°F
differential A0
37
F1
30
condenser fan off delay after
compressor off for suction tem-
perature alarm
0... 240 s
N. PAR. DEF. DIGITAL INPUTS MIN... MAX.
38
i0
1
multi-purpose 2 input activation
0 = with contact closed
1 = with contact open
39
i1
1
funzione ingresso configurabile
0 = disabled
1 = HP/HPr alarm
2 = FIL alarm
3 = condenser fan on
4 = tSH alarm
5 = device off
6 = condenser probe
40
i2
0
multi-purpose 2 input activation
0 = with contact closed
1 = with contact open
41
i3
0
funzione ingresso multi-purpose
1
0 = disabled
1 = HP/HPr alarm
2 = FIL alarm
3 = condenser fan on
4 = tSH alarm
5 = device off
42
i4 0 high pressure alarm delay 0... 240 s
43
i5 0 clogged filter alarm delay 0... 999 min
44
i6
0
condenser fan on delay from di-
gital input 0... 240 s
45
i7
30
clogged filter alarm delay after
power-on 0... 999 s
N. PAR. DEF. DIGITAL OUTPUTS MIN... MAX.
46
u0
2
configuration auxiliary output 1
0 = disabled
1 = evacuation valve
2 = alarm
3 = condenser fan
4 = water pump
47
u1
1
configuration auxiliary output 2
0 = disabled
1 = evacuation valve
2 = alarm
3 = condenser fan
4 = water pump
48
u2 5 time evacuation valve on 0... 240 s
49
u3 4 time evacuation valve off 0... 240 s
N. PAR. DEF. ENERGY SAVING (if r4 = 0) MIN... MAX.
50
HE1
0
consecutive time without operat-
ing on keys for low consumption 0... 240 min
0 = disabled
51
HE2
3
configuration energy saving LED
(options 0 and 1) and compres-
sor mode during normal opera-
tion (options 2 and 3)
0 = LED energy saving on in
low consumption
1 = LED energy saving on if
compressor off
2 = compressor on, off in
HP, tAL and tAH alarm
3 = compressor on, off in HP
alarm