Overview
What kind of temperature controller is the LT23B?
The LT23B is a digital indicating controller with dimensions of W48 x H48 x D70.5mm.
In addition to measuring and display temperature, it can be used for temperature management of heating and cooling equipment by combining PID control, adjustment output, event output, and communication.
48 × 48 mm
Small size
This controller measures 48 x 48 mm, making it easy to consider for placement on a control panel.
50 ms
high-speed input sampling
The input sampling period can be selected from 50, 100, 300, and 500 ms.
PID
Temperature control
High-performance PID control supports stable temperature control.
PLC
PLC integration
The LT23B supports PLC link communication, allowing direct communication between the PLC and the PLC.
The LT23B is a product that offers improved functionality while maintaining compatibility with previous models. When replacing existing equipment, please check the model number, inputs, outputs, and communication methods of the equipment you are currently using in advance.
Replacement
Key points when replacing existing temperature controllers
When upgrading temperature controllers, it's important to first check what's currently being used in your existing equipment, rather than just looking at the features of the new product.
| Check items | Contents to be confirmed |
|---|---|
| Appearance | Check the current board size and the LT23B's 48x48mm size. |
| Input | Check the thermocouple, resistance thermometer, DC voltage and current, etc. |
| Adjustment output | Check the on/off pulse, SSR drive pulse, current output, etc. |
| Control output 2 | Check if heating/cooling control is required. |
| Communication | Check if RS-485 or PLC link communication is required. |
| event | Check if features such as alarms or heater disconnection are necessary. |
Don't decide on replacement based solely on "same size."
The external dimensions of 48 x 48 mm alone are not sufficient to determine whether it is a suitable replacement.
Please select the product after confirming the actual model, inputs, outputs, communications, option, wiring, etc.
Operation
features of display and operation
For controllers used in the field, not only control performance but also ease of checking the current status and setting the parameters are important.
Large, easy-to-read LCD display
display PV data in an easy-to-understand format, supporting on-site status checks.
display level of setting items
You can change display level of the settings items, making it easier to access the settings you need.
Assign functions to front keys
You can assign frequently used functions to the front keys.
Settings and status check from PC
Dedicated software allows for monitoring of device settings and control status.
Control
control performance and heating/cooling control
High-performance PID control
The LT23B supports high-performance PID control and performs temperature control.
The input sampling period can be selected from 50, 100, 300, and 500 ms.
Two adjustable output systems
By using option adjustable output 2, temperature control combining heating and cooling can be achieved.
When using heating/cooling control, please select the model that includes the required output specifications.
Communication
Integration with PLC and PC
PLC link communication for direct communication with a PLC
The LT23B supports PLC link communication using RS-485.
The official product page states that it can read and write PLC internal data, and send LT23B data to the PLC.
Configure and monitor devices from your PC.
The dedicated loader software LTB-S001 allows you to configure parameter and monitor control status of the LT23B.
Additionally, a USB loader cable, LTB-S003, is available.
When considering the LT23B's communication and setup environment, please check not only the main unit but also the necessary configuration, including the PLC, PC, dedicated software, and USB loader cable.
Retail
Other main features
Abundant input specifications
Depending on models, it supports thermocouples, resistance thermometer, and DC voltage / current inputs.
3 types of control outputs
Depending on models, it supports on/off pulse output, SSR drive pulse output, and current output.
Event Output
It handles alarms, heater disconnection, current, heater short circuits, and more.
Front IP66
The front panel has an IP66 protection structure.
Dimensions 48 x 48 x 70.5mm
Its small size makes it easy to consider integrating into a game board.
Diverse materials and software
Catalogs, specifications, instruction manuals, software, CAD data, etc., are available.
Selection
Things to check when selecting a model
The LT23B comes in different models depending on the input, output, and option. When replacing existing equipment, it is helpful to organize the following items before considering the model number.
| Check items | Specific details to be confirmed |
|---|---|
| Input | Thermocouples, resistance thermometer, DC voltage and current |
| Control Output 1 | On/off pulse, SSR drive pulse, current output |
| control output 2 | Is heating/cooling control necessary? |
| Communication | Is RS-485 or PLC link communication required? |
| event | Alarm, heater disconnection, current, heater short circuit, etc. |
| PC settings | Do you need LTB-S001 or LTB-S003? |
If you're unsure which model to choose
If you can provide the model number, input/output specifications, and whether or not it has communication capabilities for your current temperature controller, we can organize the conditions that need to be checked when replacing it.
I need advice on replacing the LT23B and selecting a suitable replacement model.
FAQ
FAQ
What are the dimensions of the LT23B?
The external dimensions are W48 x H48 x D70.5mm. It is a small controller measuring 48 x 48mm.
What does the input correspond to?
Depending on models, it supports thermocouples, resistance thermometer, and DC voltage / current. Please check the product specifications for details such as measurement range.
Can it be connected to a PLC?
It supports PLC link communication using RS-485. Direct communication between the LT23B and the PLC allows for reading and writing of PLC internal data and transmitting LT23B data to the PLC.
Can I configure this from my PC?
You can use the dedicated loader software LTB-S001 to set parameter and monitor control status.
Does it support heating/cooling control?
By using option adjustable output 2, heating/cooling control can be achieved.
What should I check when upgrading from LT23A?
Please check the model number, inputs, control outputs, communications, events, and option of your existing equipment. It is important to select the model number based on the actual specifications, not just the size.
related
Learn more about temperature control
Basics of temperature control
Related measuring instruments
Consultation
I need advice on replacing the LT23B and selecting a suitable replacement model.
Please consult with us regarding the selection of the appropriate model for your application, including replacement of existing temperature controllers, confirmation of input and output specifications, PLC integration, and heating/cooling control.
