Digital Inputs - TEXA TX050 Istrucciones De Manejo

5. PARAMETERS
REGULATION
Hy Differential: (0,1÷25°C/1÷45°F) Intervention differential for
set point. Compressor Cut IN is set point + differential (Hy).
Compressor Cut OUT is when the temperature reaches the
set point.
LS Minimum SET POINT: (-55°C÷SET/-67°F÷SET) Sets the
minimum value for the set point.
US Maximum SET POINT: (SET÷99°C/SET÷99°F) Sets the
maximum value for set point.
ot First probe calibration: (-9.9÷9.9°C/-17÷17°F) Allows to
adjust possible offset of the first probe.
od Outputs activation delay at start up: (0÷99 min) This
function is enabled at the initial start up of the instrument and
inhibits any output activation for the period of time set in the
parameter.
AC Anti-short cycle delay: (0÷50 min) Minimum interval between
the compressor stop and the following restart.
Lt Minimum time compressor ON: (0÷99 s) When switched on,
the compressor stays ON for Lt minimum time. In case of probe
error this parameter doesn't work, in this case are considered
only the Cy and Cn parameters.
Cy Compressor ON time with faulty probe: (0÷99 min) Time
during which the compressor is active in case of faulty
thermostat probe. With Cy=0 compressor is always OFF. If
Cy=0 and Cn=0 compressor is always OFF.
Cn Compressor OFF time with faulty probe: (0÷99 min)
time during which the compressor is OFF in case of faulty
thermostat probe. With Cn=0 compressor is always active.
CH Kind of Action: CL=cooling action; Ht =heating action.
DISPLAY
CF Measurement unit: (°C-°F) °C=Celsius; °F=Fahrenheit.
WARNING: When the measurement unit is changed the set
point and the values of the regulations parameters change
automatically.
rE Resolution (only for °C): (dE-in) dE=decimal between -9.9
and 9.9°C; in=integer
dy Display delay: (0÷15 min.) When the temperature increases,
the display is updated of 1°C/1°F after dy time.
ALARMS
AA Alarm configuration: (rE-Ab) rE=alarm threshold relative to
set point; Ab=absolute alarm threshold.
AU Maximum temperature alarm: (AL÷99°C/99°F) When this
temperature is reached the alarm is enabled, after the Ad
delay time.
AL Minimum temperature alarm: (-55÷AU°C/-67÷AU°F) When
this temperature is reached the alarm is enabled, after the
Ad delay time.
AH Alarm differential:
differential for temperature alarm recovery.
Ad Temperature alarm delay: (0÷99 min) Time interval between
the detection of an alarm condition and alarm signalling.
dA Exclusion of temperature alarm at startup: (0÷99 min)
Time interval between the detection of the temperature alarm
condition after instrument power ON and alarm signalling.
At Alarm showing mode: (AU-rS) AU=display without memory,
the alarm is showed only if the alarm is present; rS=display
alarm with memory. The alarm display symbol is showed till a
key is pressed even if the alarm condition isn't present. See
the explanatory table at page 16.
Instruction manual
(0.1÷25.5°C/1÷45°F) Intervention
rA Alarm Relay mode: (AU-rS) AU=relay activation without
memory, the alarm is showed only if the alarm is present;
rS=relay activation with memory. The alarm display symbol
is showed till a key is pressed even if the alarm condition isn't
present. See the explanatory table at page 16.
tb Silencing alarm relay: (n-y) n=silencing disabled, alarm
relay stays on till alarm conditions lasts; y=silencing enabled:
alarm relay can be switched OFF by pressing a key during an
alarm. See the explanatory table at page 16.
OUTPUTS CONFIGURATION
o0 Output 1 configuration: (nU/CP/Fn/AL/AU/db)
nU=relè off; CP=thermostatic regulation; Fn=Fan control;
AL=Alarm; AU=auxiliary; db=neutral zone.
o1 Output 2 configuration: (nU/CP/Fn/AL/AU/db)
nU=relè off; CP=thermostatic regulation; Fn=Fan control;
AL=Alarm; AU=auxiliary; db= neutral zone.
AP Alarm relay polarity: (CL-OP) CL=when active is closed;
OP=when active is opened.
DIGITAL INPUT
iP Digital input polarity: (OP-CL) OP=activated by closing the
contact; CL=activated by opening the contact.
iF Digital input
EA=external alarm "EA" message is displayed; bA=serious
alarm "CA" message is displayed; do=door open; Sb=stand-
by function activation;
HC=reverse action.
di Digital input delay: (0÷99 min) with iF=EA or bA delay
between the detection of the external alarm condition and its
signalling. . With iF=do it represents the delay to activate the
door open alarm.
OTHER
Pt Parameter code table
rL Firmware release

6. DIGITAL INPUTS

The free voltage digital input is programmable in different configurations
by the iF parameter.
EXTERNAL ALARM (iF=EA)
As soon as the digital input is activated the unit will wait for di time
delay before signalling the "EA" alarm message. The outputs status
don't change. The alarm stops just after the digital input is de-activated.
SERIOUS ALARM (iF=bA)
When the digital input is activated, the unit will wait for di delay before
signalling the "CA" alarm message. The relay outputs are switched
OFF. The alarm will stop as soon as the digital input is de-activated.
DOOR SWITCH (iF=do)
It signals the door status. Since the door is opened, after the delay time
set through parameter di, the door alarm is enabled, the display shows
the message "dA". With the door open, the high and low temperature
alarms are disabled.
START STANDBY (iF=Sb)
The activation of this digital input permits to switch on/off the devices.
When the instrument is in StandBy the display shows Sb labelstrumento
e visualizza "Sb" a display.
SWITCHING SECOND RELAY ON (iF=AU)
When o1=AU it switches on and off the second relay.
- 5 -
configuration: (EA/bA/do/Sb/AU/HC)
AU=auxiliary relay activation;