dixell XT220C Installing And Operating Insructions
The pre-set probe type is
written on the label of the
instrument, see picture. If it is
SET
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1592002280
XT220C – XT221C
Two Stages Digital Controllers
with Multi Probe Input
1. GENERAL WARNING
1.1
PLEASE READ BEFORE USING THIS
MANUAL
This manual is part of the product and should be kept near the
•
instrument for easy and quick reference.
The instrument shall not be used for purposes different from those
•
described hereunder. It cannot be used as a s afety device.
Check the application limits before proceeding.
•
1.2
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2. GENERAL DESCRIPTION
The XT220C and XT221C are two-stage ON/OFF controllers
for temperature, humidity and pressure applications with direct
or inverse action, user-selectable. The analogue input type can
be set by parameter between the following, according to the
model:
- PTC, NTC;
- PTC, NTC, Pt100, Ther mocouple J, K, S;
- 4÷20mA, 0÷1V, 0÷10V.
SAFETY PRECAUTIONS
Check the supply voltage is correct before connecting the
instrument.
Do not expose to water or moisture: use the controller only within
the operating limits avoiding sudden temperature changes with
high atmospheric humidity to prevent format ion of condensation
Warning: disconnect all electrical connections before any kind of
maintenance.
The instrument must not be opened.
In case of failure or faulty operation s end the instrument back to the
distributor or to “DIXELL s.r.l.” (see address) with a detailed
description of the fault.
Consider the maximum current which can be applied to each relay
(see Technical Data).
Ensure that the wires for probes, loads and the power supply are
separated and far enough from each other, without crossing or
intertwining.
In case of applications in industrial environments, the use of mains
filters (our mod. FT1) in parallel with inductive loads could be
useful.
E.I. with OUC = ind, S1C = dir (cooling), S2C = dir (cooling).
4.2 2 DEPENDENT OUTPUTS (OUC=DIP)
With dependent control stages (ouC=diP) SET2 is related to
SET1:
therefore SET2 is: SET1+SET2
output #1 with direct or inverse action according to the S1C
parameter; output #2 with direct or inverse action according to
the S2C.
E.I. with ouC=diP (depend ent), S1C = dir (cooling ), S2C =
dir (cooling).
5. FRONT PANEL COMMANDS
5.2 TO SEE AND MODIFY THE SETPOINT1 (OR
SETPOINT2)
2. To change the Set1 value push the
within 10s and confirm it with SET key.
3. The St2 label is displayed, push the SET key to see the
value and use the
EXIT: push the SET +
any keys.
1. Push and release the
label is displayed, push again the
SET key to see the value.
9
or
8
arrows within 10s to modify it.
9
8
9
keys or wait for 15s without pushing
9
key, the
9
or
8
arrows
9
8
5.3 HOW TO SET THE TIMER
Hold pressed the CLOCK key for 3s.
The duration (hh:mm) will be displayed.
Use the UP and DOWN keys to adjust it.
Confirm the value pushing again t he SET key or waiting 10s.
5.4 HOW TO START A CYCLE
Push and release the CLOCK key.
The remaining time of the cycle will be displa yed and the timer
is started.
5.5 CYCLE END
The end of the cycle is signalled by the “End” message on the
display and by the activation of t he buzzer.
The buzzer go on noising till a key is pressed..
5.6 HOW TO MANUALLY STOP A CYCLE.
When a cycle is in progress push and release the CLOCK key.
The controller come back to display the temperature and the
timer is erased.
5.7 HOW TO CHANGE THE TIMER WHEN A CYCLE
IS RUNNING.
Hold pressed the CLOCK key for 3s, the remaining time starts
blinking.
Use the UP and DOWN keys to adjust it.
Confirm the value pushing again t he SET key or waiting 10s.
3. FIRST INSTALLATION
3.1 PROBE SETTING
different from the pr obe t hat
has be used, set the probe followi ng pr ocedur e below
3.1.1 How to set the probe.
1. Enter the programming menu by pressing the SET+
for 3s.
2. Select the Pbc (Probe configuration) parameter and
push the SET key.
3. Set the kind of probe:
a. Controller for tempe rature: Pt= Pt100, J = J
thermocouple, c = K thermocouple, S = S
thermocouple; Ptc = PTC; ntc = ntc.
b. Controller with current or voltage inputs:
cur=4÷20mA, 0-1= 0÷1V, 10= 0÷10V
4. Push the SET key to confirm it.
5. Switch the controller off and on again.
NOTE: Before proceeding check and, if necessary; set with
appropriate values the Minimum Set Points (LS1 e LS2) and
Maximum Set Points (US1 e US2). See also the paragraphs
concerning the programming.
4. REGULATIONS
4.1 2 INDEPENDENT OUTPUTS (OUC=IND)
Two independent control stages (ouC=ind): output #1 at direct
(S1C=dir) or inverse (S1C=in) action; output #2 at (S2C = dir)
direct or inverse (S2C =in) action.
SET: To display and modify target set point1 and 2; in
programming mode it selects a parameter or confirm an
operation.
TO SWITCH THE INSTRUMENT ON/OF F: If the fu nction
is enabled (par. onF=yES), by pressing the SET key for
more than 4s the controller is sw itched OFF. To switch the
instrument on again press the SET key.
9
UP: in programming mode it browses the parameter codes
9
8
8
or increases the displayed value. Hold it pressed for a
faster change
8
DOWN: in programming mode it browses the parameter
8
codes or decreases the displayed value. Hold it pressed
for a faster change
/
CLOCK To set the timer and to start/stop a cycl e
/
KEY COMBINATIONS:
99+
8
To lock & unlock the keyboard.
8
SET +
8
To enter in programming mode.
8
SET +
9
To return to the room temperature display.
9
5.1 USE OF LEDS
A series of light points on the front panels is used to monitor
the loads controlled by the instrument. Each LED function is
described in the followi ng table.
LED MODE FUNCTION
ON Output 1 enabled
ON Output 2 enabled
LED1
Flashing - Programming Phase (fl ashing with LED2)
LED2
Flashing - Programming Phase (fl ashing with LED1)
LED3
Flashing - The cycle is running
ON - ALARM signal
- In “Pr2” indicates the parameter is also
present in “Pr1”
5.8 HOW TO SEE THE TEMPERATURE DURING A
CYCLE
When the cycle is running, the controller displays the remaining
time to the end of the cycle.
Push the DOWN key, the temperature will be displayed for 5s.
5.9 POSSIBILITY OF SELECTING THE KIND OF
REGULATION: CONTINUOS OR ONLY DURING THE
CYCLE.
By means of the trM parameter the kind of r egulations is set::
With trM = oFF the regulation is enabled only during the cycle.
With trM = on the regulation is always active, the cycle
consists of starting the timer and signalling when this is
expired.
5.10 TO ENTER THE PARAMETERS LIST “PR1
To enter the parameter list “Pr1” (user accessible parameters)
operate as follows:
1. Push for 3s the SET +
2 start blinking).
2. The controller will display the first
parameter present in the Pr1 menu. .
8
keys (LED1 &
8
5.11 TO ENTER THE PARAMETERS LIST “PR2”
The “Pr2” parameter list contains the configuration parameters.
A security code is required to enter it.
1. Enter the “Pr1” level, see above paragraph.
2. Select “Pr2” parameter and press the “SET” key.
3. The “PAS” flashing message is displayed, shortly follow ed
by “0 - -” with a flashing zero.
4. Use
9
or
8
to input the security code in the flashing
9
digit; confirm the f igure by pressing “SET”.
8
1592002280 XT220-221C GB R.1.0 03.02. 03.doc
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1592002280
The security code is “321”.
5. If the security code is correct the access to “Pr2” is
enabled by pressing “
Another possibility is the following:
After switching ON the instrument, within 30 seconds, push
8
keys together for 3s: the Pr2 menu w ill be entered.
8
SET +
” on the last digit.
SET
5.12 HOW TO MOVE A PARAMETER FROM THE
“PR2” MENU TO “PR1” AND VICEVERSA.
Each parameter present in “
into “
”, user level, by pressing
Pr1
In “
when a parameter is present in “
Pr2”
on.
” MENU can be removed or put
Pr2
“SET +
8
8
”
Pr1
.
” the LED
5.13 HOW TO CHANGE A PARAMETER
To change a parameter value operates as follow s:
1. Enter the
2. Select the required parameter.
3. Press the “
4. Use “UP” or “
5. Press “
following parameter.
TO EXIT
NOTE
exited by waiting the ti me- out to expire.
Programming mode
” key to display its value.
SET
” to change its value.
DOWN
” to store the new value and move to the
SET
: Press
: the set value is stored even when the procedure is
or wait 15s without pressing a key.
SET + UP
5.14 HOW TO LOCK THE KEYBOARD
Keep pressed for more than 3 s the the
1.
The “POF” message will be displayed and the keyboard
2.
will be locked. At this point it will b e poss ible only to see
the set point or the MAX o Mi n temperature stored
If a key is pressed more than 3s the “POF” message will
3.
be displayed.
9
and
8
8
keys.
9
5.15 TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the the
keys, till the “
” message will be displayed.
Pon
9
and
9
5.16 ON/OFF FUNCTION
TO SWITCH THE INSTRUMENT ON/OFF
enabled (par.
than 4s the controller is switched OFF. To switch the
instrument on again press the SET key.
), by pressing the SET key for more
onF=yES
: If the function is
6. PROBES AND MEASURING RANGE
Probe Down Scale Full Scale
NTC -40°C/-40°F 110°C / 230 °F
PTC -50°C / -58°F 150°C / 302°F
Pt100 -200°C / -328°F 600°C / 1112°F
TcK 0°C / 32°F 1300°C / 1999°F
TcJ 0°C / 32°F 600°C / 1112°F
TcS 0°C / 32°F 1400°C / 1999°F
7. LIST OF PARAMETERS
REGULATION
Hy1 Intervention differential for set point1
Sc.). It can be set with positive value or with negative
value. The kind of action depends on the
= direct or
dir
Hy2 Intervention differential for set point2
Sc.). It can be set with positive value or with negative
value. The kind of action depends on the S2C parameter:
= direct or
dir
LS1 Minimum set point1:
minimum acceptable value for the set poi nt 1.
LS2 Minimum set point2:
minimum acceptable value for the set poi nt 2.
US1 Maximum set point1:
acceptable value for set point1.
US2 Maximum set point2:
acceptable value for set point2.
ouC Output connections (diP
select if SET2 is independent from SET1 or if the SET2
depends on SET1 (so Set2= SET1+S ET2).
S1C Action type output 1: S1C=in
humidifying /increase pressure);
(cooling / dehumidifying / decr ease pressure).
1592002280 XT220-221C GB R.1.0 03.02. 03.doc
= inverse.
in
= inverse.
in
(Down Sc.÷ Set1) Sets the
(Down Sc.÷ Set2) Sets the
(Set1÷ Full Sc.) Sets the maximum
(Set2÷ Full Sc.) Sets the maximum
=dependent;
(-Full Sc. / Full
parameter:
S1C
: (-Full Sc. / Full
=independent)
ind
inverse action (heating/
direct action
S1C=dir
S2C Action type output 2: S2C=in
humidifying /increase pressure);
(cooling / dehumidifying / decr ease pressure).
AC Anti-short cycle delay
between the switching off and t he following switching on
on Minimum time a stage st ays switched ON
ono:Minimum time between 2 following switching ON of
the same load
trd Cycle length setting (0÷19.59h)
trM Regulation setting
the regulation is enabled only dur ing the cycle.
oFF
the regulation is always active, the cycle consists of
on
is
8
8
starting the timer and signa lling when this has expired.
trS Timer exhausted signallin
the buzzer is not activated;
no
activated.
ALC Alarms configuration:
to set point1 or referred t o absol ute values.
relative to set point1;
rE
ALL Minimum alarm
with ALC=rE:
this value is subtracted from the set point1. The alarm
signal is enabled when the temperature goes below the
“SET1-ALL” value.
with ALC=Ab
minimum alarm is enabled when the temperature goes
below the “ALL” value.
ALU Maximum alarm:
with ALC=rE:
Set1|) Maximum alarm is enabled when the temperature
exceeds the “SET1+ALU” value.
with ALC=Ab:
alarm is enabled when the temperature exceeds the
“ALU” value.
ALHT emperature alarm for alarm recovery:
Differential for al ar m r eset, always positive.
ALd Alarm delay:
detection of an alarm conditi on and alarm signalling.
dAo Delay of alarm at start-up
between the detection of the alarm condition after
instrument power on and alarm signalling.
So1 Output 1 status with faulty probe
So1=on closed.
So2 Output 2 status with faulty probe
So2=on closed.
tbA Status of alarm relay after pushing a key. (XT221C
only): oFF
AS Alarm relay configuration (XT221C only): cL =
terminals open with alarm;
alarm.
LCI Start of scale, only with current or voltage input
(-1999÷1999) Adjustment of read out corresponding to
4mA or 0V input signal.
UCI End of scale, onl y with current or voltage input
(-1999÷1999) Adjustment of read out corresponding to
20mA or 1V or 10V input signal .
oPb Probe calibration
possible offset of the probe.
rES Decimal point ON/OFF
with 2 decimal points, only for current or voltage input)
cE
select the resolution of t he cont roller.
NOTE:
models with thermocouple input .
UdM Measurement unit:
for temperature:°C
with 4÷20mA, 0÷ 1V, 0÷10V input : 0= °C; 1= °F, 2=
%RH
PbC Probe selection:
models
for temperature NTC/PTC : Ptc
for temperature standard: Pt
thermocouple, c = K thermocouple, S = S thermocouple;
= PTC;
Ptc
with 4÷20mA, 0÷1V, 0÷ 10V input : cur=
0÷1V,
P3F Third wire presence for Pt100 probe:
wires Pt100 probes:
probe.
HESSet point 1 changes during the Energy Saving cycle:
(Down Sc./Full Sc.) sets the variation of the set point 1
during the Energy Saving cycle.
(0÷120 min).
CYCLE REGULATION
:
relative to set poin t1, (0÷ |Down Sc.-Set1|)
absolute temperature, (Down Scale ÷ ALu)
alarm relative to set point1, (0÷|Full Sc.-
absolute alarm, (ALL÷Full Sc.) Maximum
(0÷999 min) time interval between the
= relay disabled;
PROBES AND DISPLAY
: (-Full sc.÷Full sc.) allows to adjust
the decimal point selection is not available on
= Celsius; °F = Fahrenheit.
bar
10=
PSI
, 4=
, 5=
it sets the kind of probe. It depends on
= ntc.
ntc
0÷10V.
DIGITAL INPUT
;7& ² ;7&
, 3=
inverse action (heating/
S2C=dir
: (0÷250 sec) Minimum time
yES:
ALARMS
it determines if alarms are relative
absolute temperature
Ab
: (0÷23.5h) time interval
relay enabled.
on =
5-6 terminals closed with
oP =
: (rES=in OFF; rES=dE ON; rES=
it depends on models:
no measurement unit.
= PTC;
= Pt100, J = J
2 wires probe;
no =
direct action
(0÷250 sec)
the buzzer is
(0,1÷ F ull sc ale)
: So1=
oFF
: So2=
oFF
= ntc.
ntc
4÷20mA,
for using 2 or 3
3 wires
yES =
open;
open;
5-6
:
0-1=
i1F Digital input operating mode:
function:
oFF
Energy Saving;
serious external alarm: it sw itches off the loads.
i1P Digital input polarity:
CL
OP
did Digital input alarm delay:
the detection of the external alarm condition (i1F= EAL or
i1F = bAL) and its signalling.
Adr RS485 serial address
within a control or supervisi ng syst em.
onF Swithching ON/OFF enabling from keyboard: (no
disabled;
of the instrument by pressing the SET1 key for more than
4s.
Ptb Parameters table:
parameters map.
rEL Software release:
Pr2 To access the Pr2
= to invert the kind of action: direct - reverse;
c-H
= to switch the controller off.;
: the digital input is activated by closing the contact;
: the digital input is activated by opening the contact
EAL
=enabled) It permits the switching ON/OFF
yES
(read only) Shows the code of the
(read only)
parameter programming menu.
configure the digital input
= Not used;
= generic external alarm;
OTHER
AUS
(0÷120 min) delay between
(0÷247) identifies the instrument
HES
bAL
8. INSTALLATION AND MOUNTING
Instrument
panel, in a 29x71 mm hole, and fixed using the special
brackets supplied.
To obtain an IP65 protection grade use the front panel rubber
gasket (mod. RG-C).
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 air circulate by the cooling holes.
XT220C
and
shall be mounted on vertical
XT221C
9. ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to
connect cables with a cross section up to 2,5 mm
connecting cables make sure the power supply complies with
the instrument’s requirements. Separate the input connection
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.
2
. Before
10. SERIAL CONNECTIONS
All models can be connected to the monitoring and supervising
system XJ500 using the serial port. The external XJ485 serial
module to interface the instrument with the monitoring and
supervising system XJ500 is required.
The standard ModBus RTU protocol it is used.
NOTE: Instruments with current or voltage input and 230V
or 115V supply, cannot be connected to the XJ485 serial
module.
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 front keypad.
2. When the controller is ON, inser t the “
9
key; the
9
flashing
3. Push “
4. Turn OFF the instrument remove the
NOTE
In this case push again
again or remove the “
“End”
SET”
turn it ON again.
: the “
” message is displayed for failed programming.
Err
message appears followed a by
"uPL"
key and the
9
9
Hot key
will stop flashing.
End
key if you want to restart the upload
” to abort the operation.
Hot key
“Hot Key”,
” and push
then
11.2 HOW TO PROGRAM AN INSTRUMENT USING
A HOT KEY (DOWNLOAD)
1. Turn OFF the instrument.
2/4
=
=
=
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