1592009520 XW260K GB r1.0 04.08.2015
XW260K
3/5
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 probe Pb2 and the
auxiliary probe 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 (parmeter)
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
T620
keyboard 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). Power module
XW260K
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
MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD
CLICK!
1
2
2
3
3
1
1
7.3
MOUNTING WITH KEYBOARD COVER OPENING UPWARD
CLICK!
1
2
2
2
3
3
1
1
8.
ELECTRICAL CONNECTIONS
XW260K
is provided with screw terminal blocks to connect cables with a cross section up to 2,5 mm
2
for
the RS485(optional) and the keyboard. Connecting other inputs, power supply and relays,
XW260K
is
provided with Faston connections (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 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.
9.
TTL/RS485 SERIAL LINE
The TTL connector allows, by means of the external module TTL/RS485
(XJ485)
, 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
“. The
instruments can be ordered wit the 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.
“
err
” for failed programming.
In this case turn the unit off and then on if you want to restart the download again or remove the
“
Hot key
” to abort the operation.
10.2
UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)
1.
Turn OFF the instrument by means of the ON/OFF key and remove the TTL serial cable if present;
then turn it ON again.
2.
When the Wing unit is ON, insert the “
Hot key
” and push
o
key; the
"uPL"
message appears.
3.
Push “
SET”
key to start the UPLOAD; the “
uPL
” message is blinking.
4.
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:
