dIXEL
Operating instruction manual
1592025920
1592025920 XEV22D GB r1.0 2008.09.05.doc XEV22D 4/4
3) Automatically the parameter list of the “Hot Key” is downloaded into the
Controller memory, the “doL” message is blinking followed a by flashing
“End”.
4) After 10 seconds the instrument will restart working with the new parameters.
5) Remove the “Hot Key”.
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.
14. DISPLAY MESSAGES
Mess. Cause Outputs
“nA”
None of digital inputs configured as CCL are
activated
Valve closed
“Pf”
The PEd time is elapsed and the regulation is
stopped
Valve closed after PEd. There is a probe
error
“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 SFd parameter
“StP” Regulation stop caused by Std and Sti Valve closed
“EE” Memory anomaly
14.1 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.
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.
15. TECHNICAL DATA
Housing: self extinguishing ABS.
Case: 4 DIN modules 70x135mm with male and female connectors; depth 60mm;
Mounting: DIN RAIL mounted in a omega (3) din rail
Protection: IP20.
Connections: disconnectable Screw terminal block ≤ 2,5 mm
2
wiring.
Power supply: 24Vac/dc ±10%;
Power absorption: depending on connected valve 20VA 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 High voltage
Outputs for valve: bipolar or unipolare valves
Data storage: on the non-volatile memory (EEPROM).
Kind of action: 1B; Pollution grade: normal; Software 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
16. 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
tEU
Type of Stepper motor uP – bP bP Pr2
tEP
Automatic Valve configuration 0÷10 1 Pr2
LSt
Minimum number of steps 0 – Ust See tEP Pr2
USt
Maximum number of steps LSt – 800*10 See tEP Pr2
Sr
Step rate 10 ÷ 600 step/s See tEP Pr2
CPP
Current per phase (only bipolar valves) 0 ÷ 100 *10mA See tEP Pr2
CHd
Holding current per phase (only bipolar
valves)
0 ÷ 100 *10mA See tEP Pr2
OPE
Start opening Percentage 0 ÷ 100 % 85 Pr2
SFd
Start Function duration
0.0÷42.0 minutes: tens
of seconds
1.3
Pr2
Sti
Stop regulation interval
0.0÷24.0 hours: tens of
minutes
0
Pr2
Std
Stop duration 0 ÷ 60 min. 0 Pr2
MnF
Maximum opening percentage 0 ÷ 100 % 100 Pr2
FOP
Forced Opening time-out 0 ÷ 100 % - nu nu Pr2
PI PARAMETERS (trained staff)
Pb
Proportional band 0.1 ÷ 50.0 °C / 1÷90 °F 10.0 Pr2
rS
Band Offset
-12.0 ÷ 12.0 °C / -21 ÷
21°F
0.0 Pr2
inC
Integration time 0 ÷ 255 s 120 Pr2
PROBE PARAMETERS
tPP
Type of pressure transducer 420 - 5V- LAn 420 Pr2
LPP
Enable pressure probe sending
in LAN
n ÷ Y n Pr2
PA4
Probe value at 4mA or at 0V (related to
PrM parameter)
-1.0 bar / -14 PSI -0.5 Pr2
P20
Probe value at 20mA or at 5V (related
to PrM parameter)
PA4 ÷ 50.0 bar / 725
PSI
11.0 Pr2
oPr
Pressure probe calibration
-12.0 ÷ 12.0 bar / -174 ÷
174 psi
0 Pr2
ttE
type of temperature probe PtM ÷ ntc PtM Pr2
otE
Temperature probe calibration
-12.0 ÷ 12.0 °C / -21 ÷
21 °F
0 Pr2
DIGITAL INPUTS
i1P
Free of voltage digital input polarity cL – OP CL Pr2
i1F
Free of voltage digital input function CCL , rL CCL Pr2
d1d
Digital input 1 (free of voltage)
activation delay
0 ÷ 255 min. 0 Pr2
i2P
Main voltage digital input polarity cL – OP CL Pr2
i2F
Main voltage digital input function CCL , rL CCL Pr2
d2d
Digital input 2 (Main voltage) activation
delay
0 ÷ 255min. 0 Pr2
ALARMS
dAO
Alarm delay after restarting regulation
0.0÷42.0 min: tens of
seconds
10.0
Pr2
tdA
Type of alarm signalled by relay ALL, SH, PrE, DI ALL Pr2
LPL
Lower pressure limit for superheat
regulation (related to PrM parameter)
PA4 ÷ P20 bar / PSI -0.5 Pr2
MOP
Maximum operating pressure threshold
(related to PrM parameter)
PA4 ÷ P20 bar / PSI 11.0 Pr2
LOP
Minimum suction pressure limit (related
to PrM parameter)
PA4 ÷ P20 bar / PSI -0.5 Pr2
PHy
Pressure alarm Hysteresis 0.1 ÷ 5.0 bar / 1÷ 72 PSI 0.1 Pr2
dML
delta MOP-LOP 0 ÷ 100% 30 Pr2
MSH
Maximum superheat alarm
LSH ÷ 32.0 °C / LSH ÷
176 °F
80.0 Pr1
LSH
Lowest superheat alarm
0.0 ÷ MSH °C / 32 ÷
MSH °F
2.5 Pr1
SHy
Superheat hysteresis 0.1 ÷ 25.5 °C / 1 ÷ 77°F 0.1 Pr2
SHd
Superheat alarm activation delay 0 ÷ 255 s 120 Pr1
FrC
Fast-Recovery Constant 0÷100 s 50 Pr2
DISPLAY
Lod
Local display SH - PEr – P1 - P2 SH Pr1
CF
Temperature measurement units °C - °F °C Pr2
PMu
Pressure measurement unit bAr – PSI bAr Pr2
rES
Resolution (only °C) dE – in dE Pr2
PrM
Type of pressure (Absolute / relative) rEL – AbS rEL Pr2
CLP
Cooling call percentage
Read only
- - - Pr2
tP1
Temperature probe value Read only - -- Pr1
PPr
Pressure probe value
Read only
- - - Pr1
tP2
Temperature converted from pressure
probe
Read only
- - - Pr1
OPP
Acutal Opening percentage
Read only
- - - Pr1
d1S
Free of voltage digital input state
Read only
- - - Pr1
d2S
Main voltage digital input state
Read only
- - - Pr1
Adr
Serial address 1÷247 1 Pr2
Mod
Modbus type Std – AdU StD Pr2
Ptb
Parameters map - - - - - - Pr2
rEL
Release software - - - - - - Pr2
Pr2
Second level menu - - - - - - Pr1
dIXEL S.p.a.
Z.I. Via dell’Industria, 27 - 32010 Pieve d’Alpago (BL) ITALY
tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 98 93 13
http://www.dixell.com
E-mail: dixell@dixell.com
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