LAE electronic LTR15 User Manual

Thank you for having chosen a LAE electronic product. Before installing the instrument, please read these instructions carefully to
ensure maximum performance and safety.
1. INSTALLATION
1.1. LTR15 is sized 77x35x77 mm (WxHxD). It is inserted into the panel through a hole 71x29 mm and secured by pressing
gently into the relative clamps. The rubber gasket should be placed between the instrument frame and the panel, checking its seal
to avoid infiltration.
1.2. The instrument should operate at an ambient temperature between -10°…+50°C and relative humidity between
15%...80%. To reduce the effects of electromagnetic disturbance, ensure that the sensor and signal cables are well separated from
the power conductors.
1.3. The supply voltage, switched powers and arrangement of connections must be in compliance with the indications given
on the container.
CAUTION: if the relays must frequently change over a heavy load, it is advisable to contact the manufacturer to obtain indications
regarding the lifetime of the contacts.
Whenever products are to be stored within very rigid specifications or they are very valuable, it is advisable to use a second instrument
that can activate or warn in the event of any malfunction.
2. CONTROL PARAMETERS
The regulator is adapted to the controlled system by suitably programming its configuration parameters from the setup menu. The
instrument comes with a general setup and cannot therefore be used without having first checked that the parameters are correct.
Setup is accessed by pressing in succession the keys + + and keeping them pressed simultaneously for 3 seconds. The
available parameters appear in TABLE 1 shown below.
Use the button to pass from one parameter to the next, to pass to the previous one press button . To display the correlated
value press the key , to change it press + or simultaneously. Press the key to exit from setup; if the keyboard is not
touched for 30 seconds, exit is automatic.
The set point 1SP may also be displayed and adjusted during normal regulator operation by pressing the key + or . The
set point in any case remains within the limits SPL and SPH.
INSTRUCTIONS FOR INSTALLATION AND USE.
LTR15
0LLTR002EN
SCL 1°C / 2°C / °F Reading scale
SPL -199…SPH[°] Minimum temperature set point
SPH SPL…999[°] Maximum temperature set point
1SP SPL…SPH [°] Effective temperature set point channel 1
1Y HY/PID Control type channel 1
1HY -199…199 [°] Change-over hysteresis channel 1
1PB -199…199 [°] Proportional band channel 1
1IT 0…999 [s] Integral action time channel 1
1DT 0…999 [s] Derivative action time channel 1
1AR 0…100% Reset of integral action referred to Pb1
1CT 0…255 [s] Cycle time channel 1
1PF ON/OFF Channel 1 status with faulty sensor
BAU NON/SBY Operation mode auxiliary button
SIM 0…100 Display slowdown
OS1 -150…150[°] Sensor correction
ADR 0…255 Peripheral address
TABLE 1

LAE electronic LTR15 Specifications

General

Brand	LAE electronic
Model	LTR15
Category	Controller
Language	English

Summary

Installation

LTR15 Physical Installation

Describes the physical dimensions and mounting of the LTR15 unit into a panel.

Operating Environment Requirements

Specifies the ambient temperature and relative humidity limits for instrument operation.

Electrical Connections and Compliance

Advises on supply voltage, switched powers, and connection arrangement compliance.

Control Parameters and Setup

Setup Menu Access

Details the key sequence required to enter the instrument's configuration setup menu.

Parameter Navigation and Adjustment

Explains how to navigate between and modify configuration parameters.

Setpoint (1SP) Adjustment

Describes how to view and adjust the setpoint during normal regulator operation.

Instrument Displays

Display Indications and Self-Test

Explains the initial self-test phase and subsequent indications on the display.

Temperature Measurement Processing

Describes how measured temperature is processed, corrected, and displayed.

Operation Modes and Control

Controller Standby Function

Details the button function for switching the controller on/off and entering standby.

Control Mode Selection

Explains the selection between ON/OFF (1Y=HY) and PID (1Y=PID) control modes.

ON/OFF Control Operation

Details how ON/OFF control functions, including hysteresis and heating/cooling.

PID Control Operation

Explains PID control functionality, cycle time, and heating/cooling modes.

PID Control Details

Proportional Control (P)

Explains proportional control, proportional band (1PB), and deviation from set point.

Proportional-Integral Control (PI)

Describes PI control, integral action time (1IT), and integral action reset (1AR).

Proportional-Integral-Derivative Control (PID)

Explains PID control, derivative action (1DT), and system stability.

Malfunctioning and Auto-Tuning

Malfunctioning Indication

Describes indications for sensor malfunction and output control based on parameter 1PF.

Auto-Tuning Prerequisites

Ensures PID control, correct proportional band sign, and set point are configured before auto-tuning.

Starting Auto-Tuning Function

Details the key sequence to start the auto-tuning process and parameter adjustment.

Auto-Tuning Process and Errors

Auto-Tuning Response Acquisition

Describes the acquisition phase where the controller learns system responses.

Auto-Tuning Error Codes

Explains error indications (E1, E2, E3) during unsuccessful auto-tuning.

Control Improvement

Provides guidance on adjusting parameters (1Ar, 1Pb, 1It, 1Dt) for better control performance.

Recalibration and Serial Communication

Instrument Recalibration Procedure

Steps for recalibrating the instrument, including sensor replacement.

Serial Communication Setup

Information on using the serial port for PC connection and ADR parameter setting.