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NOTE: XT120C or XT121C 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, insert the “Hot key” and push
9
9
key; the "uPL" 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
9
9
key if you
want to restart the upload again or remove the “Hot key” to abort the operation.
11.2
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.
12.
DIGITAL INPUT
The controllers have 1 free contact digital input. It is programmable in 5 different configurations by the
“i1F” parameter.
12.1
INVERT THE KIND OF ACTION: HEATING-COOLING (I1F = C-H)
This function allows to invert the regulation of the controller for both the outputs: from direct to inverse
and viceversa.
12.2
REMOTE ON/OFF (I1F = OFF)
This function allows to switch ON and OFF the instrument.
12.3
GENERIC ALARM (I1F = EAL)
As soon as the digital input is activated the unit will wait for “did” time delay before signalling the “EAL”
alarm message. The outputs status don’t change. The alarm stops just after the digital input is de-
activated.
12.4
SERIOUS ALARM MODE (I1F = BAL)
When the digital input is activated, the unit will wait for “did” delay before signalling the “bAL” alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-
activated.
12.5
ENERGY SAVING (I1F = HES)
The Energy Saving function allows to change the set point1 value as the result of the SET1+ HES
(parameter) sum. This function is enabled until the digital input is activated.
13.
ALARM SIGNALS
Message Cause
Outputs
“PFo”
Probe broken or absence
Alarm output ON; Output 1 and 2 according
parameters “So1” and “So2” respectively.
“PFc”
Probe short circuited
Alarm output ON; Output 1 and 2 according
parameters “So1” and “So2” respectively.
“HA”
Maximum temperature alarm
Alarm output ON; Other outputs unchanged.
“LA”
Minimum temperature alarm
Alarm output ON; Other outputs unchanged.
“EAL”
External alarm
Output unchanged.
“bAL”
Serious external alarm
Output OFF.
13.1
ALARM RELAY STATUS
Status of the instrument
XT121C
XT121D
AS = CL
AS= oP
AS = CL
AS= oP
Instrument off
5-6 closed
5-6 closed
23-24 closed
23-24 closed
Normal operating
5-6 closed
5-6 open
23-24 closed
23-24 open
Alarm present
5-6 open
5-6 closed
23-24 open
23-24 closed
13.2
SILENCING BUZZER / ALARM RELAY OUTPUT
Once the alarm signal is detected the buzzer, if present, can be disabled by pressing any key.
XT121C/XT121D: the alarm relay status depends on the tbA parameter: with tbA=yES the relay is
disabled by pressing any key, with tbA=no the alarm relay remains enabled as long as the alarm lasts.
The display signal remains as long as the alarm condition remains.
13.3
ALARM RECOVERY
Probe alarms “PFo”, “PFc” 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 “HA” and “LA” automatically stop as soon as the variable returns to normal values.
Alarms “bAL” and “EAL” recover as soon as the digital input is disabled.
14.
TECHNICAL DATA
Housing: self extinguishing ABS.
Case: XT120C, XT121C frontal 32x74 mm; depth 60mm;
XT120D, XT121D: 4 DIN modules 70x85 mm; depth 61mm.
Mounting: XT120C, XT121C panel mounting in a 71x29 mm panel cut-out.
XT120D, XT121D: DIN RAIL
Protection: IP20.
Frontal protection: XT110C, XT111C IP65 with frontal gasket RG-C (optional).
Frontal protection: IP65 with frontal gasket RG-C (optional).
Connections: Screw terminal block
≤
2,5 mm
2
heat-resistant wiring.
Power supply: 12Vac/dc, ±10% or: 24Vac/dc
±
10%
or 230Vac
±
10%, 50/60Hz or 110Vac,
±
10%, 50/60Hz
Power absorption: 3VA max.
Display: 3 ½ digits, red LED
Inputs: according to the order: NTC/PTC or NTC/PTC /Pt100 /Thermocouple J, K, S or 4÷20mA/ 0÷1V
/ 0÷10V
Relay outputs:
Output1: relay 8(3)A, 250Vac
Output2: relay 8(3)A, 250Vac
Alarm: (XT121C/XT121D), 8(3)A, 250Vac
Other output: buzzer (optional)
Kind of action: 1B.; Pollution grade: normal;
Software class: A.; Data storing: on the non-volatile memory (EEPROM).
Operating temperature: 0÷60 °C (32÷140°F); Storage temperature: -30÷85 °C (-22÷185°F).
Relative humidity: 20
÷
85% (no condensing)
Measuring and regulation range: according to the probe
Controller Accuracy a 25°C: better than
±
0,5% of full scale
15.
CONNECTIONS
15.1
XT120C – 12V AC/DC OR 24V AC/DC
Hot-KEY
8(3)A250V
8(3)A250V
Line
Input: 4÷ 20mA
0÷ 1V / 0÷ 10V
PTC / N TC
Probe: Pt100= 7 – 9 (8); Thermocouple J, K, S = 7(+); 9(-)
24Vac/cd supply: 11-12
15.2
XT120C – 230V AC OR 115V AC
Hot-KEY
8(3)A250V
8(3)A250V
Line
Input 4÷ 20m A
0÷ 1V / 0÷ 10V
PTC / N TC
Pt100=9 –11 (10); Thermocouple J, K, S = 9(+) - 11(-)
115Vac supply: 7-8
15.3
XT121C – 12VAC/DC OR 24VAC/DC
Hot-KEY
8(3)A250V
8(3)A250V
8(3)A250V
Line
LOAD 1 LOAD 2
ALARM
Input: 4÷ 20mA
0÷ 1V / 0÷ 10V
PTC / N TC
Probe: Pt100= 7 – 9 (8); Thermocouple J, K, S = 7(+); 9(-)
24Vac/cd supply: 11-12
