1592009550 XW264K GB r1.0 04.08.2015
XW264K
3/4
XW264K
3/4/
DIGITAL INPUTS
odc Compressor and fan status when open door:
no
= normal;
Fan
= Fan OFF;
CPr
= Compressor OFF;
F_C
= Compressor and fan OFF.
I1P Door switch input polarity: CL
: the digital input is activated by closing the contact;
OP
: the digital input is activated by opening the contact.
I2P Configurable digital input polarity:
CL
: the digital input is activated by closing the contact;
OP
: the digital input is activated by opening the contact
I2F Digital input operating mode:
configure the digital input function:
EAL
= generic alarm;
bAL
= serious alarm mode;
PAL
= Pressure switch;
dFr
= Start defrost;
AUS
= Not used;
Es
= Energy Saving;
onF
= remote On/OFF.
did Time interval/delay for digital input alarm:
(0
255 min.) Time interval to calculate the number of the
pressure switch activation when I2F=PAL. If I2F=EAL or bAL (external alarms), “did” parameter defines
the time delay between the detection and the successive signalling of the alarm.
OTHER
Adr RS485 serial address
(1÷247)
:
Identifies the instrument address when connected to a ModBUS
compatible monitoring system.
rEL Release software:
(read only) Software version of the microprocessor.
Ptb Parameter table:
(read only) it shows the original code of the Dixell parameter map.
Prd Probes display:
(read only) display the temperature values of the evaporator probes Pb2 and Pb3.
Pr2 Access to the protected parameter list
(read only).
6.
DIGITAL INPUTS
The Wing series can support up to 2 free contact digital inputs. One is always configured as door switch, the
second is programmable in seven different configurations by the “
I2F
” parameter.
6.1
DOOR SWITCH INPUT
It signals the door status and the corresponding relay output status through the “
odc
” parameter:
no
= normal (any change);
Fan
= Fan OFF;
CPr
= Compressor OFF;
F_C
= Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter “
dOA
”, the alarm output is enabled and the
display shows the message “
dA
”. The alarm stops as soon as the external digital input is disabled again. During
this time and then for the delay “
dot
” after closing the door, the high and low temperature alarms are disabled.
6.2
CONFIGURABLE INPUT - GENERIC ALARM (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.
6.3
CONFIGURABLE INPUT - SERIOUS ALARM MODE (BAL)
When the digital input is activated, the unit will wait for “
did
” delay before signalling the “
BAL
” alarm message.
The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-activated.
6.4
CONFIGURABLE INPUT - PRESSURE SWITCH (PAL)
If during the interval time set by “
did
” parameter, the pressure switch has reached the number of activation of
the “
nPS
” parameter, the “
PAL
” pressure alarm message will be displayed. The compressor and the regulation
are stopped. When the digital input is ON the compressor is always OFF.
6.5
CONFIGURABLE INPUT - START DEFROST (DFR)
It executes 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.
6.6
CONFIGURABLE INPUT - ENERGY SAVING (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.
6.7
CONFIGURABLE INPUT - REMOTE ON/OFF (ONF)
This function allows to switch ON and OFF the instrument.
6.8
DIGITAL INPUTS POLARITY
The digital inputs polarity depends on “
I1P
” and “
I2P
” parameters.
CL
: the digital input is activated by closing the contact.
OP
: the digital input is activated by opening the contact
7.
INSTALLATION AND MOUNTING
Keyboard
T620
shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two screws
3 x
2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L).
Keyboard
V620
shall be mounted on vertical panel, in a 72x56 mm hole, and fixed using screws
3 x 2mm. To
obtain an IP65 protection grade use the front panel rubber gasket (mod. RGW-V).
Instrument
XW264K
shall be mounted in a panel with two or more screws and it must be connected to the
keyboard by means of a two-wire cable (
1mm). 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 the air circulate by the cooling holes.
7.1
T620 CUT OUT
165
150
31
+0.5
-0
+0
.5
-0
+1
-1
Ø3 x2
7.2
V620: CUT OUT
56
72
40
83
,5
7.3
MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD
CLICK!
1
2
2
3
3
1
1
7.4
MOUNTING WITH KEYBOARD COVER OPENING UPWARD
CLICK!
1
2
2
2
3
3
1
1
8.
ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5 mm
2
for
the digital and analogue inputs. Relays and power supply have a Faston connection (6,3mm). Heat-resistant
cables have to be used. 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.
N.B.
Maximum current allowed for all the loads is 20A.
8.1
PROBE CONNECTIONS
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 probes among the evaporators fins in the coldest places, where most
ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost
termination.
9.
TTL SERIAL LINE
The TTL connector allows, by means of the external module TTL/RS485, to connect the unit to a network line
ModBUS-RTU
compatible as the Dixell
monitoring system XJ500 (Version 3.0).
The same TTL connector is used to upload and download the parameter list of the “
HOT KEY
“. These
instruments can be ordered with direct serial output
RS485
(Optional).
10.
USE OF THE PROGRAMMING “HOT KEY “
The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the
“Hot
Key”
and vice-versa.
10.1
DOWNLOAD (FROM THE “HOT KEY” TO THE INSTRUMENT)
1.
Turn OFF the instrument by means of the ON/OFF key, remove the TTL serial cable if present, insert
the
“Hot Key”
and then turn the Wing ON.
2.
Automatically the parameter list of the
“Hot Key”
is downloaded into the Wing memory, the “
DoL
”
message is blinking. After 10 seconds the instrument will restart working with the new parameters.
3.
Turn OFF the instrument remove the
“Hot Key”,
plug in the TTL serial cable, then turn it ON again.
At the end of the data transfer phase the instrument displays the following messages:
“
end
“ for right programming. The instrument starts regularly with the new programming.
