1592002241 XT141C-D GB r1.0 08.07.2016
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XT141C / XT141D
Two Stages Digital Controller with 2 Set Points and
PID Action on Output 1
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 safety device.
•
Check the application limits before proceeding.
•
Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the
same and unchanged functionality.
1.2
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 formation 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 send 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.
2.
GENERAL DESCRIPTION
The XT141C and XT141D are a two-stage ON/OFF controllers for temperature, humidity and
pressure applications with direct or inverse action, user-selectable. Output 1 can be programmed
by the installer for PID, PD, or ON/OFF control. At start up SOFT START function can be
activated which enables the set point to be reached gradually. Output 2 is always with ON/OFF
control. The analogue input type can be set by parameter between the following, according to the
model:
-
PTC, NTC;
-
PTC, NTC, Pt100, Thermocouple J, K, S;
-
4÷20mA, 0÷1V, 0÷10V.
3.
FIRST INSTALLATION
3.1
PROBE SETTING
The pre-set probe type is
written on the label of the
instrument, see picture. If it is
different from the probe that
has be used, set the probe following procedure below
3.1.1 How to set the probe.
1.
Enter the programming menu by pressing the
SET+
n
n
n
n
for 3s.
2.
Select the
Pbc (Probe configuration)
parameter and push the
SET
key.
3.
Set the kind of probe:
a.
Controller for temperature
:
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.
FRONT PANEL COMMANDS
XT141C
XT141D
SET1
: To display and modify target set point1; in programming mode it selects a parameter or
confirm an operation.
TO SWITCH THE INSTRUMENT ON/OFF
: If the function is enabled (par. onF=yES), by
pressing the
SET1
key for more than 4s the controller is switched OFF. To switch the
instrument on again press the
SET
1 key.
SET2
: To display target set point2.
o
o
o
o
UP
: in programming mode it browses the parameter codes or increases the displayed value.
Hold it pressed for a faster change
n
n
n
n
DOWN:
in programming mode it browses the parameter codes or decreases the displayed
value. Hold it pressed for a faster change
KEY COMBINATIONS:
o
o
o
o
+
n
n
n
n
To lock & unlock the keyboard
.
SET1
+
n
n
n
n
To enter in programming mode.
SET1
+
o
o
o
o
To return to the room temperature display.
4.1
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 following table.
LED
MODE
FUNCTION
ON
Output 1 enabled
ON
Output 2 enabled
LED1
Flashing
- Programming Phase (flashing with LED2)
LED2
Flashing
- Programming Phase (flashing with LED1)
E.S.
ON
Energy saving activated by digital input
ON
- ALARM signal
- In “
Pr2
” indicates the parameter is also present in “Pr1”
4.2
TO SEE THE SETPOINT1 (OR SETPOINT2)
1
1.
Push and release the
SET1 (SET2)
key to see the Set point value;
2.
To come back to the normal display push again the
SET1 (SET2)
key or wait 10s.
4.3
TO CHANGE THE SETPOINT1 (OR SETPOINT2)
1
1.
Hold pushed for 2s the SET1 (SET2)
key to change the Set point value;
2.
The value of the set point will be displayed and the LED1 & 2 start blinking;
3.
To change the Set value push the
o
o
o
o
or
n
n
n
n
arrows within 10s.
4.
To memorise the new set point value push the
SET1 (SET2)
key again or wait 10s.
4.4
TO ENTER THE PARAMETERS LIST “PR1
To enter the parameter list “Pr1” (user accessible parameters) operate as follows:
1
1.
Push for 3s the
SET1 + DOWN
keys
(LED1 & 2 start blinking).
2.
The controller will display the first
parameter present in the Pr1 menu..
4.5
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 “
SET1
” key.
3.
The “
PAS
” flashing message is displayed, shortly followed by “
0 - -
” with a flashing zero.
4.
Use
o
o
o
o
or
n
n
n
n
to input the security code in the flashing digit; confirm the figure by pressing
“
SET1
”.
The security code is “321”.
5.
If the security code is correct the access to “Pr2” is enabled by pressing “
SET1
” on the last
digit.
Another possibility is the following:
After switching ON the instrument, within 30 seconds, push
SET1
and
DOWN
keys together for
3s: the Pr2 menu will be entered.
4.6
HOW TO MOVE A PARAMETER FROM THE “PR2” MENU TO “PR1” AND
VICEVERSA.
Each parameter present in “
Pr2
” MENU can be removed or put into “
Pr1
”, user level, by pressing
“SET1 +
n
n
n
n
”
.
In “
Pr2”
when a parameter is present in “
Pr1
” the LED
is on.
4.7
HOW TO CHANGE A PARAMETER
To change a parameter value operates as follows:
1.
Enter the
Programming mode
2.
Select the required parameter.
3.
Press the “
SET1
” key to display its value.
4.
Use “
UP
” or “
DOWN
” to change its value.
5.
Press “
SET1
” to store the new value and move to the following parameter.
TO EXIT
: Press
SET1 + UP
or wait 15s without pressing a key.
NOTE
: the set value is stored even when the procedure is exited by waiting the time-out to expire.
