Arctiko SF SERIES, Service Manual, Page: 43 / 48

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d IX E L
Installing and Operating Instructions
1592020530
1592020530 XR30CX RTC GB r1.0 28.05.2008.doc
XR30CX
3/5
bLL Compressor off with low temperature alarm of condenser : n = no: compressor
keeps on working ; Y = yes, compressor is switched off till the alarm is present, in any
case regulation restarts after AC time at minimum.
AC2 Compressor off with high temperature alarm of condenser : n = no: compressor
keeps on working ; Y = yes, compressor is switched off till the alarm is present, in any
case regulation restarts after AC time at minimum.
SECOND RELAY
tbA Alarm relay silencing (with oA1=ALr):
( n = silencing disabled: alarm relay stays on till alarm condition lasts, y =silencing
enabled: alarm relay is switched OFF by pressing a key during an alarm).
oA1 Second relay configuration: ALr : alarm; Lig : light; AuS : Auxiliary relay; onF : always
on with instrument on; db = do not select it; dEF: do not select it!. ; FAn: do not select
it!. ; dF2: do not select it.
AoP Alarm relay polarity: it set if the alarm relay is open or closed when an alarm happens.
CL = terminals 1-2 closed during an alarm; oP = terminals 1-2 open during an alarm
DIGITAL INPUT
i1P Digital input polarity: oP: the digital input is activated by opening the contact; CL: the
digital input is activated by closing the contact.
i1F Digital input configuration: EAL = external alarm: “EA” message is displayed; bAL =
serious alarm “CA” message is displayed. PAL = pressure switch alarm, “CA” message
is displayed; dor = door switch function; dEF = activation of a defrost cycle; AUS =to
switch on the second relay if oA1 = AUS; Htr = kind of action inversion (cooling –
heating); FAn = not set it; ES = Energy saving.
did : (0 255 min) with i1F= EAL or i1F = bAL digital input alarm delay: delay between the
detection of the external alarm condition and its signalling.
with i1F= dor: door open signalling delay
with i1F = PAL: time for pressure switch function:
time interval to calculate the
number of the pressure switch activation.
nPS Pressure switch number: (0 15) Number of activation of the pressure switch, during
the “ did ” interval, before signalling the alarm event (I2F= PAL).
If the nPS activation in the did time is reached, switch off and on the instrument to
restart normal regulation.
odc Compressor status with door open: no, Fan = normal; CPr ; F_C = Compressor OFF.
rrd Outputs restart after doA alarm: no = outputs not affected by the doA alarm; yES =
outputs restart with the doA alarm;
HES Temperature increase during the Energy Saving cycle : (-30,0°C 30,0°C/-22÷86°F)
it sets the increasing value of the set point during the Energy Saving cycle.
TO SET CURRENT TIME AND WEEKLY HOLIDAYS
Hur Current hour (0 ÷ 23 h)
Min Current minute (0 ÷ 59min)
dAY Current day (Sun ÷ SAt)
Hd1 First weekly holiday (Sun ÷ nu) Set the first day of the week which follows the
holiday times.
Hd2 Second weekly holiday (Sun ÷ nu) Set the second day of the week which follows the
holiday times.
N.B. Hd1,Hd2 can be set also as “nu” value (Not Used).
TO SET ENERGY SAVING TIMES
ILE Energy Saving cycle start during workdays : (0 ÷ 23h 50 min.) During the Energy
Saving cycle the set point is increased by the value in HES so that the operation set
point is SET + HES.
dLE Energy Saving cycle length during workdays : (0 ÷ 24h 00 min.) Sets the duration
of the Energy Saving cycle on workdays.
ISE Energy Saving cycle start on holidays . (0 ÷ 23h 50 min.)
dSE Energy Saving cycle length on holidays (0 ÷ 24h 00 min.)
TO SET DEFROST TIMES
Ld1÷Ld6 Workday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of
the 6 programmable defrost cycles during workdays. Ex. When Ld2 = 12.4 the second
defrost starts at 12.40 during workdays.
Sd1÷Sd6 Holiday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the
6 programmable defrost cycles on holidays. Ex. When Sd2 = 3.4 the second defrost
starts at 3.40 on holidays.
N.B. :
To disable a defrost cycle set it to “nu”(not used). Ex. If Ld6 =nu ; the sixth
defrost cycle is disabled
OTHER
Adr Serial address (1÷244): Identifies the instrument address when connected to a
ModBUS compatible monitoring system.
PbC Type of probe: it allows to set the kind of probe used by the instrument: PbC = PBC
probe, ntc = NTC probe.
onF on/off key enabling: nu = disabled; oFF = enabled; ES = not set it .
dP1 Thermostat probe display
dP3 Third probe display
- optional .
dP4 Fourth probe display .
rSE Real set point: (readable only), it shows the set point used during the energy saving
cycle or during the continuous cycle.
rEL Software release for internal use .
Ptb Parameter table code: readable only .
8. DIGITAL INPUT (ENABLED WITH P3P = N)
The free voltage digital input is programmable in different configurations by the “ i1F ”
parameter.
8.1 DOOR SWITCH INPUT (i1F = dor)
It signals the door status and the corresponding relay output status through the “ odc ”
parameter: no, Fan = normal (any change); CPr, F_C = Compressor OFF.
Since the door is opened, after the delay time set through parameter “ did ”, the door alarm is
enabled, the display shows the message “ dA ” and the regulation restarts is rtr = yES. The
alarm stops as soon as the external digital input is disabled again. With the door open, the
high and low temperature alarms are disabled.
8.2 GENERIC ALARM (i1F = EAL)
As soon as the digital input is activated the unit will wait for “ did ” time delay before signalling
the “ EAL ” alarm message. The outputs status don’t change. The alarm stops just after the
digital input is de-activated.
8.3 SERIOUS ALARM MODE (i1F = bAL)
When the digital input is activated, the unit will wait for “ did ” delay before signalling the “ CA ”
alarm message. The relay outputs are switched OFF. The alarm will stop as soon as the
digital input is de-activated.
8.4 PRESSURE SWITCH (i1F = PAL)
If during the interval time set by “ did ” parameter, the pressure switch has reached the number
of activation of the “ nPS ” parameter, the “ CA ” pressure alarm message will be displayed. The
compressor and the regulation are stopped. When the digital input is ON the compressor is
always OFF.
If the nPS activation in the did time is reached, switch off and on the instrument to
restart normal regulation.
8.5 START DEFROST (i1F = dFr)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal
regulation will restart only if the digital input is disabled otherwise the instrument will wait until
the “MdF” safety time is expired.
8.6 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F = Htr)
This function allows to invert the regulation of the controller: from cooling to heating and
viceversa.
8.7 ENERGY SAVING (i1F = ES)
The Energy Saving function allows to change the set point value as the result of the SET+
HES (parameter) sum. This function is enabled until the digital input is activated.
8.8 DIGITAL INPUTS POLARITY
The digital input polarity depends on the “ i1P ” parameter.
i1P=CL : the input is activated by closing the contact.
i1P=OP : the input is activated by opening the contact
9. TTL SERIAL LINE – FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the
external TTL/RS485 converter,
XJ485-CX , to connect the instrument to a monitoring system
ModBUS-RTU compatible such as the X-WEB500/3000/300.
10. X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the HOY
KEY connector. The X-REP output
EXCLUDES the serial connection.
To connect the X-REP to the
instrument the following
connectors must be used CAB-
51F(1m), CAB-52F(2m), CAB-
55F(5m),
11. INSTALLATION AND MOUNTING
Instrument XR30CX shall be mounted on vertical panel, in a
29x71 mm hole, and fixed using the special bracket supplied.
The temperature range allowed for correct operation is 0 60
°C. Avoid places subject to strong vibrations, corrosive
gases, excessive dirt or humidity. The same
recommendations apply to probes. Let air circulate by the
cooling holes.
12. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block to connect cables with a cross section up
to 2,5 mm
2
. Before connecting cables make sure the power supply complies with the
instrument’s requirements. Separate the probe cables from the power supply cables, from the
outputs and the power connections. Do not exceed the maximum current allowed on each
relay, in case of heavier loads use a suitable external relay.
12.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the
evaporator fins in the coldest place, where most ice is formed, far from heaters or from the
warmest place during defrost, to prevent premature defrost termination.