EVCO EVX225N7 - Manual (Page 4)

EVCO S.p.A. • Code 104X225E104 • page 4/5
A7 0 240 min 15
A8 0 240 min 15
A11 -99.0 99.0 °C/°F (1) -10.0
A12 0 2 - - - - 1
A14 -99.0 99.0 °C/°F (1) 10.0
A15 0 2 - - - - 1
A16 0 240 min 120
A17 0 240 min 15
A18 0 240 min 15
A19 0.1 15.0 °C/°F (1) 2.0
PAR. MIN. MAX. U.M. DEFAULT
F0 0 2 - - - - 1
F2 0 2 - - - - 0
F3 0 15 min 2
F9 0 240 sec 0
F11 0.0 99.0 °C/°F (1) 15.0
F12 0 240 sec 30
PAR. MIN. MAX. U.M. DEFAULT
i0 0 1 - - - - 1
i1 0 1 - - - - 0
i2 -1 240 s 5
i5 0 1 - - - - 1
i6 0 1 - - - - 0
i7 -1 240 s 5
PAR. MIN. MAX. U.M. DEFAULT
u2 0 1 - - - - 0
u4 0 1 - - - - 1
u6 1 120 min 5
u9 0 1 - - - - 1
u11 0 6 - - - - 0
PAR. MIN. MAX. U.M. DEFAULT
LA 1 247 - - - - 247
Lb 0 3 - - - - 2
LP 0 2 - - - - 2
(1) the unit of measurement depends on P2
(2) properly set the parameters corresponding to the regulators after modifying parameter P2
(3) the parameter has effect even after an interruption in the power supply that occurs while the instrument is switched on
(4) the time established with the parameter is counted even when the instrument is switched off
(5) if parameter C1 is set to 0, the delay after the end of the room 1 and room 2 probe error will be 2 min
(6) the parameter differential is 2.0 °C/4 °F
(7) if when the instrument is switched on, the condenser temperature is already above that established in parameter C7, then parameter C8 will not have effect
(8) the instrument stores the defroster interval count every 30 min; the modification of parameter d0 takes effect following the end of the preceeding interval or following the activation of manual defrosting.
(9) the display returns to normal operation when, at the end of evaporator fan disactivation, the room 1 (or the room 2) temperature falls below that at which the display was initally blocked (or if a temperature alarm
is signaled)
(10) during defrosting and dripping and when the evaporator fan is stopped, the temperature alarms are absent, provided that these were signaled after the activation of defrosting
(11) if parameter P4 is set to 0, the condenser fan will function in parallel with the compressor
(12) to avoid damaging the unit connected to the instrument, change the parameter setting when the instrument is switched off
(13) if parameter u2 is set to 0, switching off the instrument may cause the cabinet light and/or the auxiliary output to switch off (the next time the instrument is switched on the unit connected will remain switched off);
if parameter u2 is set to 1, switching off the instrument will not cause the cabinet light and/or the auxiliary output to switch off (the next time the instrument is switched on the unit connected will remain switched
on).
first temperature alarm delay (room 1, code “AL1” and code “AH1”)
delay in first maximum temperature alarm (room 1, code “AH1”) following the conclusion of evaporator fan disactivation (10)
temperature below that at which the second minimum temperature alarm is activated (room 2, code “AL2”); see also A12 and A19
type of minimum second temperature alarm (code “AL2”)
0 = alarm absent
1 = relative to working setpoint (that is “second working setpoint - A11”; consider A11 without sign)
2 = absolute (that is A11)
temperature higher than that at which the second maximum temperature alarm is activated (room 2, code “AH2”); see also A15 and A19
type of maximum second temperature alarm (code “AH2”)
0 = alarm absent
1 = relative to working setpoint (that is “second working setpoint + A14”; consider A14 without sign))
2 = absolute (that is A14)
delay in second maximum temperature alarm (room 2, code “AH2”) after the instrument is switched on (3)
second temperature alarm delay (room 2, code “AL2” and code “AH2”)
delay in second maximum temperature alarm (room 2, code “AH2”) following the conclusion of evaporator fan disactivation (10)
differential of parameters A1, A4, A11 and A14
EVAPORTOR FAN
evaporator fan activity during normal operation
0 = switched off
1 = switched on
2 = in parallel with the compressor; see also F9
evaporator fan activity during defrosting and dripping
0 = switched off
1 = switched on (setting parameter d7 to 0 is recommended)
2 = dependent on F0
maximum duration of evaporator fan disactivation; (during evaporator fan desactivation the compressor can be switched on and the evaporator fan will remain switched
off)
delay in the switching off of evaporator fan following the switching off of the compressor (only if F0 = 2)
condenser temperature above that at which the condenser fan is switched on (“F11 + 2.0 °C/4 °F, only if u11 = 6 and provided the compressor is switched on); see also
F12 (11)
delay in switching off of the condenser fan following the switching off of the condenser (only if u11 = 6); see also F11
DIGITAL INPUTS
effect caused by the activation of the high pressure switch
0 = no effect
1 = the compressor and the evaporator fan will be switched off and the condenser fan (only if u11 = 6) will be switched on, once time i2 has passed the display will show
the flashing code “HP” and the buzzer will be activated (until the input is disactivated)
type of high pressure switch input contact
0 = normally open (active input with closed contact)
1 = normally closed (active input with open contact)
high pressure switch input alarm delay (code “HP”)
-1= the alarm will not be signaled
effect caused by the activation of the low pressure switch
0 = no effect
1 = the compressor and the evaporator fan will be switched off, once time i7 has passed the display will show the flashing code “LP” and the buzzer will be activated (until
the input is disactivated)
type of low pressure switch input contact
0 = normally open (active input with closed contact)
1 = normally closed (active input with open contact)
low pressure switch input alarm delay (code “LP”)
-1= the alarm will not be signaled
DIGITAL OUTPUTS
enabling of manual switch on/switch off of the cabinet light or the auxiliary output when the instrument is switched off
(only if u11 = 0 or 2) (13)
1 = YES
enabling of alarm output disactivation with the silencing of the buzzer (only if u11 = 3)
1 = YES
operating time of demistor heater (only if u11 = 1)
enabling of buzzer
1 = YES
operation controlled by fifth output (12)
0 = CABINET LIGHT - in this case the AUXILIARY key and parameter u2 will be activated
1 = DEMISTER HEATER - in this case the AUXILIARY key and parameter u6 will be activated
2 = AUXILIARY OUTPUT - in this case the AUXILIARY key and parameters u2 will be activated
3 = ALARM OUTPUTS - in this case parameter u4 will be activated
4 = reserved
5 = reserved
6 = CONDENSER FAN - in this case parameters P4, F11 and F12 will be activated
SERIAL NETWORK (MODBUS)
instrument address
baud rate (0 = 2,400 baud, 1 = 4,800 baud, 2 = 9,600 baud, 3 = 19,200 baud)
parity (0 = none, 1 = odd, 2 = even)