dIXEL XC450D Istruzioni per l'uso - Pagina 2

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dIXEL XC450D Istruzioni per l'uso
dIXEL
KEYBOARD
SET
to see or modify the pressure set point (ON only during regulation mode) and for
parameters.
n
(GIÙ) by holding it pressed for 3s, the regulation is enabled or disabled; it decreases
the displayed values.
o
(SU) to enter the alarm menu; it increases the displayed values.
e
CLOCK to enter the maintenance menu.
KEY COMBINATIONS
o
n
+
 To lock and unlock the keyboard.
n
SET +
To enter the programming mode.
o
SET +
To exit the programming mode or the alarm menu.
FUNCTIONING DURING OFF STATUS
When the display is OFF, the controller checks only the LL liquid level alarm, the P1
pressure transducer status if absent, broken or when the pressure is out of scale.
REGULATION
HOW TO SET THE PRESSURE SET
Instrument in regulation mode (Regulation ON: push for 3sec
the DOWN key)
1)
Push and release the SET
2)
The Lower display will show the "SEtC" label, the
Upper display will show the pressure
To change the Set value push the o or n
3)
4)
To memorise the new value push and release the SET
key within 30s.
(Regulation stop: push for 3sec the DOWN key)
HOW TO LOCK AND UNLOCK THE KEYBOARD
1.
Keep pressed for more than 3 s the [
"POF" message will be displayed and the keyboard will be
locked.
2.
At this point it will be possible only to see the set point, enter
the alarm menu, see the alarm and hours menu.
3. Keep pressed together for more than 3s the [
to unlock the keyboard, till the "Pon" message will be
displayed.
MESSAGES AND ALARMS
Code
Description
Cause
Controller in
"By pass" digital input
OFF
stand by
de-activated
P1 probe
Probe failure or out of
P1
failure alarm
range
EA1
The
corresponding
Input safeties
EA2
digital input is turned
alarm
EA3
on.
Pressure lower than
Minimum
LA
[SetC – LAL] value
suction alarm
after the tAo delay
Pressure higher than
Maximum
HA
[SETC+HAL]
value
suction alarm
after the tAo delay
Keyboard
Press together for 3"
Pon
unlocked
the UP+DOWN keys
Keyboard
Press together for 3"
PoF
locked
the UP+DOWN keys
Wrong
Wrong programmation
A12
configuration
of some resources
PARAMETERS PROGRAMMING
TO ENTER THE Pr1 PARAMETER LIST: Hold pressed the
n
[SET +
TO ENTER THE Pr2 PARAMETER LIST:
Select with the [
key.
1)
The flashing value "0 --" is displayed on the upper display.
2)
Insert the password 321 using the
press SET.
To exit: Press SET + UP or wait 30s without pressing a key.
NOTE: the set value is stored even when the procedure is
exited by waiting the time-out to expire.
1592001620 XC450D GB R1.0 10.07.2009
Operating instructions
key.
value.
o
n
and
o
Action
Reset
The compressor outputs
are activated according
Automatically as soon as the
to CPP, SPr o PoPr
probe restarts working.
parameters
Automatically as soon as the
The corresponding output
digital input is turned off.
is turned off.
Automatically: as soon as the
pressure or temperature reaches
Signalling only
the SetC-LAL+ differential value
(0.3bar o 1°C)
Automatically: as soon as the
pressure or temperature reaches
Signalling only
the (SetC+HAL - differential) value
(0.3bar o 1°C)
The POF message will be
Press together for 3" the
displayed and the keyboard will be
UP+DOWN keys
locked
The "POn" message will be
Press together for 3" the
displayed and the keyboard will be
UP+DOWN keys
unlocked
Parameters check
Automatic
] key for 3 s.
n
] key the Pr2 parameter and press the SET
o
and
HOW TO CHANGE PARAMETER VALUES
1. Enter the Programming mode.
2. Select the required parameter with o or n.
3. Press the "SET" key the value start blinking.
4. Use o or n to change its value.
5. Press "SET" to store the new value and move to the following parameter.
HOW TO USE THE HOT KEY
HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)
1.
Program one controller with the front keypad.
When the controller is ON, insert the "Hot key" and push o key; the "uPL"
2.
message appears followed a by flashing "End"
3.
Push "SET" key and the End will stop flashing.
4.
Turn OFF the instrument remove the "Hot Key", then turn it ON again.
NOTE: the "Err" message is displayed for failed programming. In this case push again o
key if you want to restart the upload again or remove the "Hot key" to abort the operation.
HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)
1.
Turn OFF the instrument.
2.
Insert a programmed "Hot Key" into the 5 PIN receptacle and then turn the
Controller ON.
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.
The unit can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory
to the "Hot Key" and vice-versa.
LIST OF PARAMETERS
] keys. The
PLANT DIMENSIONING AND TYPE OF REGULATION
oA4, oA5, oA6 Configuration of 3 relays:
Each relay according to the configuration of the oA4, oA5 and oA6 parameter can work
as:
n
and
] keys
1
cPr
2
StP
3
FAn
4
ALr
5
nu
6
Lin
7
Ali
8
Man
PLANT CONFIGURATION EXAMPLE:
Plant with 3 compressors:
[oA1 = Liq,]
[oA2 = Man] fixed
[oA3 = nu]
oA4 = Cpr,
oA5 = Cpr,
oA6 = Cpr.
rty: Type of regulation: db = neutral zone, Pb = proportional band.
Sty: Activation type of sequence for compressors: YES = rotation: this algorithm
distributes the working time between the various loads to ensure even run times. no =
fixed sequence: the compressors are enabled and disabled in fixed sequence: first,
second etc.
PRESSURE TRANSDUCER
PA04
Pressure value corresponding to 4 mA (0 ÷ PA20 bar). Minimum transducer
pressure value (absolute value).
PA20
Pressure value corresponding to 20 mA for probe 1 (PA04÷51.0 bar).
Maximum pressure value (absolute value).
CAL
Suction pressure calibration (-12.0÷12.0 bar).
!PAY ATTENTION TO THE TRANSDUCER SETTING!
The instrument automatically converts the pressure into relative pressure.
n
For PP07 pressure transducers (-0,5÷7.0bar or 0.5..8.0bar) is set [PA04=0.50 and
key and
PA20=8.00] and for PP11 pressure transducers (-0,5÷11.0bar or 0.5..12.0bar) is
[PA04=0.50 e PA20=12.00], with 0÷30bar pressure transducer is [ PA04=1 e PA20=31].
DIGITAL INPUT CONFIGURATION
i1C
Liquid alarm polarity: oP: the digital input is activated by opening the contact;
CL: the digital input is activated by closing the contact.
XC450D
Compressor
Compressor valve
Not used
Fan
Alarm
Not used
Not used
Not used
Not used
Only liquid alarm
Not used
Manual regulation
Not used
fixed
fixed
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