14
LT 90 Owners Manual
2015
Time
Temperature
Fan ON
Heating
Set Point
Set Point- Hy
4. FRONT PANEL COMMANDS
LED1
LED 2
SET
: Displays the target set point; selects and confirms a parameter
in the programming mode. Also used in conjunction with
(
UP)
and
(
DOWN
) to view the Min and Max recorded temperatures
and to reset the stored temperatures.
(
UP)
: To see the last temperature alarm that occurred; in
programming mode it browses the parameter codes or increases
the displayed value.
(
DOWN
) To see the last temperature alarm that occurred; in
programming mode it browses the parameter codes or
decreases the displayed value.
KEY COMBINATIONS:
+
To lock & unlock the keyboard
.
SET +
To enter in programming mode.
SET +
To return to the temperature display.
4.1 USE OF LEDS
Each LED function is described in the following table.
LED
MODE
FUNCTION
ON
- Output enabled
Flashing - Programming Phase (flashing with LED1)
- Anti-short cycle delay enabled
LED1
Flashing - Programming Phase (flashing with )
LED2
ON
- Temperature Alarm has happened, LED2 stays
on until reset
5. TEMPERATURE ALARM AND ITS DURATION
Example of Low temperature alarm
Digital custom controller
XR30C FOR WOODMASTER
1. GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
1.2 SAFETY PRECAUTIONS
2. GENERAL DESCRIPTION
3. CONTROLLING LOADS
3.1 THE REGULATION OUTPUT
3.2 CH = HT: HEATING APPLICATION.
CONTENTS
1. GENERAL WARNING ___________________________ 1
2. GENERAL DESCRIPTION_______________________ 1
3. CONTROLLING LOADS_________________________ 1
4. FRONT PANEL COMMANDS _____________________ 1
5. TEMPERATURE ALARM AND ITS DURATION
RECORDING (HACCP)_________________________ 1
6. MAIN FUNCTIONS_____________________________ 2
7. PARAMETERS________________________________ 2
8. ALARM SIGNALS______________________________ 2
9. DEFAULT SETTING VALUES ____________________ 2
•
This manual is part of the product and should be kept near the
instrument for easy and quick reference
•
The instrument shall not be used for purposes different from
those described hereunder. It cannot be used as a safety device
•
Check the application limits before proceeding
•
Some parameters, such as CH are not applicable to
Woodmaster see default settings grid fig. 15 on next page
•
Check the supply voltage is correct before connecting the
instrument
•
Do not expose to water or moisture: use the controller only within
the operating limits avoiding sudden temperature changes with
high atmospheric humidity to prevent formation of condensation
•
Warning: disconnect all electrical connections before any kind of
maintenance
•
Fit the probe where it is not accessible by the End User. The
instrument must not be opened
• In case of failure or faulty operation send the instrument back to
the distributor or to “Dixell s.r.l.” (see address) with a detailed
description of the fault
•
Consider the maximum current, which can be applied to each
relay (see Technical Data)
•
Ensure that the wires for probes, loads and the power supply are
separated and far enough from each other, without crossing or
intertwining
•
In case of applications in industrial environments, the use of
mains filters (our mod. FT1) in parallel with inductive loads
could be useful
Model XR30C, format 32 x 74 mm, is a digital thermostat. It
provides two relay outputs, one for the fan, the other one for
alarm signalling. The probe input can be selected between
PTC or NTC. The instrument has a digital input, for alarm
signalling, or for switching the auxiliary output.
The regulation is performed according to the temperature
measured by the probe.
The instruments are provided with the CH programmable
parameter, which enables the user to set the regulation both
for heating or cooling applications:
CH = Ht: heating applications, which is the application here.
The Hy value is automatically set under the Set Point. If the
temperature decreases and reaches set point minus differen-
tial the regulation output is activated and then turned off when
the temperature reaches the set point value again.
Alarm
E.T.C. Guide
Reference
