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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.
5.6
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
+
8
8
”.
In “Pr2” when a parameter is present in “Pr1” the LED
is on.
5.7
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.
5.8
HOW TO LOCK THE KEYBOARD
1.
Keep pressed for more than 3 s the
9
9
and
8
8
keys.
2.
The “POF” message will be displayed and the keyboard will be locked. At this point it will be
possible only to see the set point or the MAX o Min temperature stored
3.
If a key is pressed more than 3s the “POF” message will be displayed.
5.9
HOW TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the
9
9
and
8
8
keys, till the “Pon” message will be displayed.
5.10
ON/OFF FUNCTION
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
SET1 key.
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 (-Full Sc. / Full Sc.). It can be set with positive value or
with negative value. The kind of action depends on the S1C parameter: dir = direct or in =
inverse.
Hy2 Intervention differential for set point2: (-Full Sc. / Full Sc.). It can be set with positive value or
with negative value. The kind of action depends on the S2C parameter: dir = direct or in =
inverse.
LS1 Minimum set point1: (Down Sc.÷ Set1) Sets the minimum acceptable value for the set point1.
LS2 Minimum set point2: (Down Sc.÷ Set2) Sets the minimum acceptable value for the set point2.
US1 Maximum set point1: (Set1÷ Full Sc.) Sets the maximum acceptable value for set point1.
US2 Maximum set point2: (Set2÷ Full Sc.) Sets the maximum acceptable value for set point2.
ouC Output connections (diP=dependent; ind=independent) select if SET2 is independent from
SET1 or if the SET2 depends on SET1 (so Set2= SET1+SET2).
S1C Action type output 1: S1C=in inverse action (heating/ humidifying /increase pressure); S1C=dir
direct action (cooling / dehumidifying /decrease pressure).
S2C Action type output 2: S2C=in inverse action (heating/ humidifying /increase pressure); S2C=dir
direct action (cooling / dehumidifying /decrease pressure).
AC Anti-short cycle delay: (0÷250 sec) Minimum time between the switching off and the following
switching on
on
Minimum time a stage stays switched ON (0÷250 sec)
ono: Minimum time between 2 following switching ON of the same load (0÷120 min).
ALARMS
ALC Alarms configuration: it determines if alarms are relative to set point1 or referred to absolute
values.
rE relative to set point1; Ab absolute temperature
ALL Minimum alarm:
with ALC=rE: relative to set point1, (0÷|Down Sc.-Set1|) 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 absolute temperature, (Down Scale ÷ ALu) minimum alarm is enabled when the
temperature goes below the “ALL” value.
ALU Maximum alarm:
with ALC=rE: alarm relative to set point1, (0÷|Full Sc.-Set1|) Maximum alarm is enabled when the
temperature exceeds the “SET1+ALU” value.
with ALC=Ab: absolute alarm, (ALL÷Full Sc.) Maximum alarm is enabled when the temperature
exceeds the “ALU” value.
ALH Temperature alarm for alarm recovery: (0,1÷Full scale) Differential for alarm reset, always
positive.
ALd Alarm delay:(0÷999 min) time interval between the detection of an alarm condition and alarm
signalling.
dAo Delay of alarm at start-up: (0÷23.5h) time interval between the detection of the alarm condition
after instrument power on and alarm signalling.
So1 Output 1 status with faulty probe: So1=oFF open; So1=on closed.
So2 Output 2 status with faulty probe: So2=oFF open; So2=on closed.
tbA Status of alarm relay after pushing a key. (XT121C/XT121D only): oFF = relay disabled; on =
relay enabled.
AS Alarm relay configuration (XT121C only): cL = 5-6 terminals open with alarm; oP = 5-6
terminals closed with alarm.
PROBES AND DISPLAY
LCI Start of scale, only with current or voltage input: (with rES = in, dE, cE: -99.00÷199.00, with
rES=irE -999÷1999) Adjustment of read out corresponding to 4mA or 0V input signal.
UCI End of scale, only with current or voltage input (with rES = in, dE, cE: -99.00÷199.00, with
rES=irE -999÷1999) Adjustment of read out corresponding to 20mA or 1V or 10V input signal.
oPb Probe calibration: (-999÷999) allows to adjust possible offset of the probe.
rES Resolution: select the resolution of the controller.
in= integer (-99÷199);
dEC= 1 decimal point (-99.0÷199.0),
cE = 2 digits after the decimal point (-99.00÷199.00) only for current or voltage input,
irE = integer, large scale (–999÷1999) only for current or voltage input.
WARNING: if rES is changed from “irE” to another value, all the parameters values expressed in
degrees: SET1, SET2, Hy1, Hy2, LS1,Ls2, uS1, uS2, ALL. ALu, ALH, LCi, uCi, LAo, uAo, HES,
have to be checked and set.
NOTE: the decimal point selection is not available on models with thermocouple input.
UdM Measurement unit: it depends on models:
for temperature:°C = Celsius; °F = Fahrenheit.
with 4÷20mA, 0÷1V, 0÷10V input : 0= °C; 1= °F, 2= %RH, 3=bar, 4=PSI, 5=no measurement
unit.
PbC Probe selection: it sets the kind of probe. It depends on models
for temperature NTC/PTC: Ptc = PTC; ntc = ntc.
for temperature standard: Pt= Pt100, J = J thermocouple, c = K thermocouple, S = S
thermocouple; Ptc = PTC; ntc = ntc.
with 4÷20mA, 0÷1V, 0÷10V input : cur=4÷20mA, 0-1= 0÷1V, 10= 0÷10V.
P3F Third wire presence for Pt100 probe: for using 2 or 3 wires Pt100 probes: no = 2 wires probe;
yES = 3 wires probe.
ANALOG OUTPUT - ONLY FOR XT120D, XT121D - OPTIONAL
AOC Analog output configuration: (only for models with analog output)
AOC=Pb Probe reading. The analog output parameters LAO and UAO are indipendent and
correspond to the absolute read-out probe signal.
AOC=Er Probe - Set Point1. The analog output parameters LAO and UAO are related to the
difference between measurement of the probe and Set Point 1.
LAO Lower analog output limit: (only for models with analog output) minimum value of
temperature associated to the 4mA analog output. This value can be absolute or relative to the Set
Point 1 by setting the AOC parameter.
UAO Upper analog output limit: (only for models with analog output) maximum value of
temperature associated to the 20mA analog output. This value can be absolute or relative to the
Set Point 1 by setting the AOC parameter.
SAO Analog output safety with probe fault: (only for models with analog output) determines
what state the analog output should assume when the probe is faulty:
SAO = oFF; analog output = 4mA
SAO = on; analog output = 20mA.
DIGITAL INPUT
HES Set 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.
i1F Digital input operating mode: configure the digital input function: c-H = to invert the kind of
action: direct - reverse; oFF = to switch the controller off.; AUS = Not used; HES = Energy Saving;
EAL = generic external alarm;
bAL = serious external alarm: it switches off
the loads.
i1P Digital input polarity:
CL : the digital input is activated by closing the contact;
OP : the digital input is activated by opening the contact
did Digital input alarm delay: (0
÷
120 min) delay between the detection of the external alarm
condition (i1F= EAL or i1F = bAL) and its signalling.
OTHER
Adr RS485 serial address (0÷247) identifies the instrument within a control or supervising system.
onF Swithching ON/OFF enabling from keyboard: (no = disabled; yES=enabled) It permits the
switching ON/OFF of the instrument by pressing the SET1 key for more than 4s.
Ptb Parameters table: (read only) Shows the code of the parameters map.
rEL Software release: (read only)
Pr2 To access the Pr2 parameter programming menu.
8.
INSTALLATION AND MOUNTING
Instrument XT120C and XT121C shall be mounted on vertical 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). Instruments XT120D, XT121D, shall be mounted on an
omega DIN rail .
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.
9.
ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5
mm
2
. Before 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.
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.
