dIXEL
Installing and Operating Instructions
1592018110
1592018110 XR460C GB r1.0 04.07.2005
XR460C
4/5
8.
DIGITAL INPUT
The instrument can support up to 2 free contact digital inputs. Both of them can be configured as
One is always configured as door switch, the second is programmable in seven different
configurations by the “I2F” parameter.
8.1
DOOR SWITCH INPUT (MP1, MP2, MP)
It signals the door status to the controller:
MP1: door open for section 1;
MP2: door open for section 2;
MP door open for both the sections.
When the door is open the status of compressor (and fans) depends on the “odc1” and
“odc2”parameters:
no = normal (no changes);
Fan = Fan OFF (if fan is present);
CPr = Compressor OFF;
F_C = Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter “doA”, the alarm output is
enabled and the display shows the message “dA”. The alarm stops as soon as the external digital
input is disabled again. During this time and then for the delay “dot” after closing the door, the high
and low temperature alarms are disabled.
8.2
CONFIGURABLE INPUT - GENERIC ALARM (EA1, EA2, EAL)
It signals to the controller:
EA1: generic alarm – section 1;
EA2: generic alarm – section 2;
EAL: generic alarm – it counts for both the sections.
As soon as the digital input is activated the unit will wait for “did1” time for section 1 and “did2” time
for section 2 delay before signalling the “EAL” alarm message. The outputs status don’t change. The
alarm stops just after the digital input is de-activated.
8.3
CONFIGURABLE INPUT - SERIOUS ALARM MODE (BA1, BA2, BAL)
It signals to the controller:
bA1: serious alarm – section 1;
bA2: serious alarm – section 2;
bAL: serious alarm – it counts for both the sections.
As soon as the digital input is activated the unit will wait for “did1” time for section 1 and “did2” time
for section 2 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.
8.4
CONFIGURABLE INPUT - START DEFROST (DF1, DF2, DEF)
It executes a defrost if there are the right conditions, respectively for:
dF1: section 1;
dF2: section 2;
dEF: both the sections.
After the defrost is finished, the normal regulation will restart only if the digital input is disabled
otherwise the instrument will wait until the “Mdf1” and “MdF2” safety time is expired.
8.5
CONFIGURABLE INPUT - REMOTE ON/OFF (OF1, OF2, ONF)
This function allows to switch ON and OFF a sections of the instrument or the whole instrument
according to the following setting: .
oF1: section 1;
oF2: section 2;
onF: it counts for both the sections.
When the digital input is de-activated, the corresponding section restarts working.
8.6
CONFIGURABLE INPUT - ENERGY SAVING (ES)
The Energy Saving function allows to change the set point value as the result of the SET1+HES1 for
section and SET2 + HES2 fro section 2. This function is enabled until the digital input is activated.
8.7
DIGITAL INPUTS POLARITY
The digital inputs polarity depends on “I1P” and “I2P” parameters.
CL : the digital input is activated by closing the contact.
OP : the digital input is activated by opening the contact
9.
INSTALLATION AND MOUNTING
Instruments shall be mounted on 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) as shown in figure.
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.
10.
ELECTRICAL CONNECTIONS
The instrument are provided with screw terminal block to connect cables with a cross section up to
2,5 mm
2
. Heat-resistant cables have to be used. Before connecting cables make sure the power
supply complies with the instrument’s requirements. Separate the probe 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.
10.1
PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place probe away from air streams to correctly measure the
average room temperature.
11.
SERIAL LINE
The serial output allows the unit to connect to a network line ModBUS-RTU compatible as the
dIXEL
monitoring system such as XJ500 or X-XWEB.
12.
USE OF THE PROGRAMMING “HOT KEY “
The unit can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the
“Hot Key” and vice-versa.
12.1
DOWNLOAD (FROM THE “HOT KEY” TO THE INSTRUMENT)
Turn OFF the instrument, insert the “Hot Key” and then turn the instrument ON.
Automatically the parameter list of the “Hot Key” is downloaded into the memory, the “doL”
message is blinking. After 10 seconds the instrument will restart working with the new parameters.
Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON again.
At the end of the data transfer phase the instrument displays the following messages:
“end “ for right programming. The instrument starts regularly with the new programming.
“err” 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.
12.2
UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)
When the unit is ON, insert the “Hot key” and push
è
key; the "uPL" message appears.
Push “SET” key to start the UPLOAD; the “uPL” message is blinking.
Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON again.
At the end of the data transfer phase the instrument displays the following messages:
“end “ for right programming.
“err” for failed programming. In this case push “SET” key if you want to restart the programming
again or remove the not programmed “Hot key”.
13.
ALARM SIGNALS
Message Cause
Outputs
“P1”
Thermostat1 probe failure
Alarm output ON; Compressor1 output according to
parameters “COn1” and “COF1”
“P2”
Thermostat2 probe failure
Alarm output ON; Compressor2 output according to
parameters “COn2” and “COF2”
“P3”
Evaporator probe failure
Alarm output ON; Other outputs unchanged
“HA”
High temperature alarm
Outputs unchanged
“LA”
Low temperature alarm
Outputs unchanged
“EE”
Some memory problems
Alarm output ON; Other outputs OFF
“dA”
Door switch alarm
Outputs unchanged
“EAL”
External alarm
Outputs unchanged
“bAL”
Serious external alarm
Regulation outputs deactivated
“POF”
Keyboard locked
Outputs unchanged
“POn”
Keyboard unlocked
Outputs unchanged
The alarm message is displayed until the alarm condition is recovery.
All the alarm messages are showed alternating with the room temperature except for the “P1” which
is flashing. To reset the “EE” alarm and restart the normal functioning press any key, the “rSt”
message is displayed for about 3s.
13.1
SILENCING BUZZER
Once the alarm signal is detected the buzzer can be silenced by pressing any key.
13.2
“EE” ALARM
The
dIXEL
instruments are provided with an internal check for the data integrity. Alarm “EE”
flashes when a failure in the memory data occurs. In such cases the alarm output is enabled.
13.3
ALARM RECOVERY
Probe alarms : “P1” (probe1 faulty), “P2” and “P3”; they automatically stop 10s after the probe
restarts normal operation. Check connections before replacing the probe. Door switch alarm “dA”
stop as soon as the door is closed. External alarms “EAL”, “bAL” stop as soon as the external
digital input is disabled.
The alarm message is displayed until the alarm condition is recovery.
All the alarm messages are showed alternating with the room temperature except for the “P1” which
is flashing.
14.
TECHNICAL DATA
Housing: self extinguishing ABS.
Case: frontal 32x74 mm; depth 60mm;
Mounting: panel mounting in a 71x29mm panel cut-out
Protection: IP20.
