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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
XT220C and XT221C 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 (XT221C)
Status of the instrument
AS = CL
AS = oP
Instrument off
5-6 closed
5-6 closed
Normal operating
5-6 closed
5-6 open
Alarm present
5-6 open
5-6 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.
XT221C: 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: frontal 32x74 mm; depth 60mm;
Mounting: panel mounting in a 71x29 mm panel cut-out.
Protection: IP20.
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: (XT221C), 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
XT220C – 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
XT220C – 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
XT221C – 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
15.4
XT221C – 230V AC OR 115V AC
Hot-KEY
8(3)A250V
8(3)A250V
8(3)A250V
Line
LOAD 1 LOAD 2
Alarm
Input 4÷ 20m A
0÷ 1V / 0÷ 10V
PTC / N TC
Probe: Pt100=9–11 (10); Thermocouple J, K, S= 9(+) - 11(-)
115Vac supply: 7-8
