dIXEL
Installing and Operating Instructions
1592002250
1592002250 XT151-160D GB R.1.08.03.2005
XT151D – XT160D
3/4
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 - 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 SET 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
Instruments XT160D, XT151D, 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.
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
o
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
o
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
XT151D
AS = CL
AS= oP
Instrument off
13-14 open
13-14 open
Normal operating
13-14 open
13-14 closed
Alarm present
13-14 closed
13-14 open
13.2
SILENCING BUZZER / ALARM RELAY OUTPUT
Once the alarm signal is detected the buzzer, if present, can be disabled by pressing any key.
XT151D: 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:XT160D, XT151D: 4 DIN modules 70x85 mm; depth 61mm.
Mounting: XT160D, XT151D: DIN RAIL
Protection: IP20.
Connections: Screw terminal block
≤
2,5 mm
2
heat-resistant wiring.
Power supply: 24Vac
±
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
Output3: relay 8(3)A, 250Vac
Output4 (XT160D): relay 8(3)A, 250Vac
Alarm: (XT151D), 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
