dIXEL
Operating instruction manual
1592019010
1592019010 XEV11D GB r1.2 2008.07.08.doc
XEV11D
3/4
PPr
Pressure probe value (read only
): it shows pressure probe value. The value depends on
PrM
.
tP2
temperature from P2 (read only
): it shows temperature obtained from conversion of
pressure value
d1S
Free of voltage digital input State (read only):
it shows
the free of voltage digital input;
d2S
High voltage digital input State (read only):
it shows the high voltage digital input state;
Adr
RS485 Serial Address:
(1÷247) Identifies the instrument address when connected to a
ModBUS compatible monitoring system.
Mod ModBus:
(AdU÷StD)
AdU=
(Only for XWEB3000 system) in this case XEV and
thermostatic controller are considered an alone instrument (it requires a custom library for
XWEB);
StD=
to use XEV in stand-alone mode, in this case normal Modbus-RTU protocol
is used;
Ptb
Parameters map:
(read only)
it identifies parameters map written by factory
rEL
Release
Firmware:
(read only)
it shows
firmware release
Pr2
Second level menu
7.
DIGITAL INPUTS
There are two digital inputs. One of them is free of voltage and the other is at supply voltage and both
can be configured as cooling call. In this way the cooling call can arrive via instruments with direct load
outputs or via instruments with output without voltage.
One of these inputs must be configured as
cooling call.
8.
PLANT STARTING FUNCTION
If necessary, by pressing and holding
o
+
SET
keys combination for 5 seconds the driver opens
completely the valve and shows on display the “
ON
” label. To disable this function press and hold
another time
o
+
SET
keys combination
or
activate digital input configured as CCL
or
wait
FOt
time
out.
9.
ELECTRICAL CONNECTIONS
The instrument are provided with screw terminal block to connect cables with a cross section up to 2,5
mm
2
. 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.
9.1
PROBES
Advised temperature probe placement is
illustrated in the figure. Between 0 and 180
inclination degrees respect to horizontal pipe
section. For suction pressure probe there
aren’t particular prescriptions
10.
RS485 SERIAL LINE
All models can be connected to the monitoring and supervising system XWEB3000. If
Mod=Std
standard ModBUS-RTU protocol is used, if
Mod=AdU
custom XWEB library is required.
11.
HOW TO USE THE HOT KEY
11.1
HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)
1.
Program one controller with the remote keypad;
2.
When the controller is ON, insert the “
Hot key
”; the four LEDs in the front of instrument panel
blink for about 5 seconds to indicate that transfer operation will start;
3.
The upload starts automatically and
Alarm
and
Tx/Rx
LEDs are active during operation;
4.
At the end, the instrument turn ON for about 10 seconds:
•
the
Tx/Rx
LED if the operation is well done;
•
the
Alarm
LED if the operation is wrong.
11.2
HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)
6)
Turn OFF the instrument.
7)
Insert a
programmed “Hot Key” into the 5 PIN connector
and then turn the Controller ON.
8)
Automatically the download starts and the LEDs
Alarm
e
Tx/Rx
are active during operation
.
9)
At the end, the instrument turn ON for about 10 seconds:
•
the
Tx/Rx
LED if the operation is well done;
•
the
Alarm
LED if the operation is wrong.
NOTE
the message “
Err
” is displayed 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.
12.
DISPLAY MESSAGES
Mess.
Cause
Outputs
“OFF” None of digital inputs configured as CCL are
activated
Valve closed
“ON” Plant start function is activated
Valve opened
“P1” Temperature probe fault
according to
PEo
and
PEd
“P2” Pressure transducer fault
according to
PEo
and
PEd
“HSH” High superheat alarm
By PI
“LSH” Low superheat alarm
Valve Closed
“LPL” Low pressure limit
see
LPL
parameter
“MOP” Maximum Operating Pressure
see
dML
parameter
“LOP” Lowest Operating Pressure
see
dML
parameter
“StF” Start Function enabled
see
ESF
parameter
“StP” Regulation stop caused by Std and Sti
Valve closed
“dEF” Defrost in progress
Valve closed
“EE” Memory
anomaly
12.1
ALARM RECOVERY
Probe alarms “
P1
”, “
P2
” start few seconds after the fault in the probe; they automatically stop few
seconds after the probe restarts normal operation. Check connections before replacing the probe.
Max. and min. alarms “
HSH
” “
LSH
” “
MOP
” “
LOP
” automatically stop as soon as the variable returns to
normal values.
12.2
ALARM “EE”
The instrument is provided with an internal check verifying memory integrity. Alarm “
EE
” flashes when
a failure in the internal memory is detected. In such case call the service.
13.
TECHNICAL DATA
Housing:
self extinguishing ABS.
Case:
4 DIN modules 70x85 mm; depth 61mm
Mounting:
DIN RAIL mounted in a omega (3) din rail
Protection
: IP20.
Connections:
Screw terminal block
≤
2,5 mm
2
wiring.
Power supply:
24Vac ±10%; 110Vac ±10%; 230Vac
±
10% 50/60Hz 50/60Hz
Power absorption: 6
VA max
Display
: three digits with icons, red LEDs, height 14,2 mm.
Inputs
: 1 temperature probe Pt1000 or NTC;
1 pressure transducer 4÷20mA o 0÷5V;
Digital inputs:
1
free of voltage
1 at Main voltage
Outputs for valve:
30W max
Data storage:
on the non-volatile memory (EEPROM).
Kind of action:
1B;
Pollution grade:
normal; S
oftware Class:
A
Operating temperature:
0÷60°C;
Storage temperature:
-25÷60 °C.
Relative humidity:
20
÷
85% (no condensing)
Resolution:
0,1 °C or 1 °F;
Precision a 25°C:
: ±0,7 °C ±1 digit
14.
WIRING CONNECTIONS
24-110Vac Models:
Power supply, high voltage digital input and valve output are respectively 24Vac
or 110Vac.
15.
STANDARD VALUES
Label
Description
Range
Default
Level
FtY
Kind of gas
R22 , 134 , 404, 407,
410, 507, CO2
404 Pr2
PEo
Probe Error opening percentage
0 ÷ 100 %
50
Pr2
PEd
Probe Error delay before stopping
regulation
0 ÷ 239 s - On
On
Pr2
ESF
Enable Start Function
n ÷ Y
Y
Pr2
OPE
Start opening Percentage
0 ÷ 100 %
85
Pr2
SFd
Start Function duration
0.0÷42.0
minutes: tens
of seconds
1.3
Pr2
ind
injection delay
0.0÷42.0
minutes: tens
of seconds
10.0
Pr2
dSH
delta SuperHeat
0.1 ÷ 10°C / 1÷50°F
0.1
Pr2
dOP
delta Opening Percentage
0 ÷ 100 %
100
Pr2
inb
injection behaviour
cL ÷ rEG
rEG
Pr2
Sti
Stop regulation interval
0.0÷24.0
hours: tens of
minutes
1.3
Pr2
Std
Stop duration
0 ÷ 60 min.
3
Pr2
MnF
Maximum opening percentage
0 ÷ 100 %
100
Pr2
FOt
Forced Opening time-out
0.0÷24.0
hours: tens of
minutes
0.1
Pr2
