SIGMATEK TAE151 Replacement and Troubleshooting

SIGMATEK TAE151 Touch Display Unit Replacement and Troubleshooting Guide

In the field of industrial automation, updating and upgrading human-machine interfaces (HMI) and display terminals are common tasks for equipment maintenance and upgrading. When the original display unit is discontinued, damaged, or unable to meet new visualization requirements, it is crucial to choose a compatible, easy to install, and reliable replacement product. SIGMATEK TAE 151, as a 15 inch touch display unit, is an ideal choice for replacing old display terminals due to its flexible interface configuration, wide voltage supply, and design that adapts to harsh industrial environments. This article will delve into the replacement selection, installation and debugging, troubleshooting, and maintenance points of TAE 151, providing engineers with a practical technical guide.

Overview of TAE 151 Technical Features

TAE 151 is a 15 inch TFT color display unit with a resolution of 1024 x 768, a color depth of 18 bits (262144 colors), a typical brightness of 350 cd/m ², and a contrast ratio of 700:1. The touch screen adopts an analog resistive thin-film glass touch panel with a resolution of 12 bit controller (USB interface) and supports automatic display detection (IPC support required). Its core interfaces include: 3 USB V1.1 Type-A ports on the front panel, 1 USB Type-A V1.1 port on the back panel, 1 CAN port (2 connections), and S-DVI port. The power supply voltage is+18 to+30V DC, with a typical current consumption of 825mA (at 24V). The power is provided by IPC through S-DVI cable, without the need for additional power supply. In terms of environmental adaptability, the working temperature is 0 to+50 ° C, the storage temperature is -20 to+60 ° C, the humidity is 20-95% without condensation, the impact resistance is 150m/s ², and it meets the EN 61000-6-2 industrial EMC standard. Protection level: Front panel IP54, rear panel IP20 (IP43 with cable tray), NEMA 250 Type 12. The shell is made of ASA plastic and weighs approximately 4.2kg.

Replacement selection and compatibility evaluation

When deciding to replace the existing display unit with TAE 151, engineers need to evaluate the following aspects:

Mechanical dimensions and installation method: The external dimensions of TAE 151 are 358mm x 313mm x 62mm, and the installation hole positions are designed to support switchgear installation and cantilever installation. The installation of switchgear requires selecting installation kits based on the thickness of the board: for board thicknesses of 1.0-3.0mm, use 12-209-021 (screw length 10mm), and for board thicknesses of 4.0-6.0mm, use 12-209-022 (screw length 16mm). For cantilever installation, use 12-209-011 (plate thickness 1.0-3.0mm) or 12-209-012 (plate thickness 4.0-6.0mm). It is necessary to ensure the use of screws of the correct length to avoid damaging internal components.

Interface matching: Before replacing, it is necessary to confirm whether the original IPC or controller supports S-DVI output. The S-DVI cable provides+24V power and video signal, with a length range of 0.3m to 15m. If the original system uses other video interfaces (such as VGA, DVI), the IPC needs to be converted or replaced. The CAN bus interface is used to connect keyboards or other peripherals, and the original system CAN network parameters need to be confirmed.

Power requirements: TAE 151 is powered by S-DVI with a voltage range of+18-30V DC, ensuring that IPC can provide sufficient power (typical 825mA). If using an independent power supply, it must comply with UL current limiting requirements (0-20V DC maximum 5A, or 20-60V DC maximum 100W), and the current limiting components must be NRTL certified.

Environmental adaptability: Confirm that the working temperature is within the range of 0-50 ° C and the humidity does not condense. If installed in areas with chemical corrosion risks, reference should be made to the chemical tolerance table. ASA shells are stable to most acid, alkali, and salt solutions, but toluene, acetone, ether, and ethyl acetate can have an impact.

Mechanical installation and grounding

When installing TAE 151, first insert a sponge rubber strip (diameter 3mm) into the groove on the back of the terminal to ensure sealing. Then fix according to the installation method:

Installation of switchgear: Insert the terminals into the openings of the switchgear and secure them from the back using matching screws. Note that the length of the screw must match the thickness of the board.

Cantilever installation: Use a cantilever installation kit to secure the terminals to the cantilever.

After installation, the display unit must be connected to the grounding bus through the flat connection terminal on the back to ensure fault free operation. Good grounding is the key to suppressing electromagnetic interference and ensuring safety.

Electrical connection and configuration

S-DVI connection: Use a dedicated S-DVI cable (26 pin HDSubD) to connect IPC and TAE 151. This cable simultaneously transmits video signals and+24V power supply. It is strictly prohibited to plug and unplug S-DVI cables with power on, otherwise the interface may be damaged. The cable length is selected based on the actual distance, with a maximum length of 15 meters.

CAN bus configuration: TAE 151 provides two CAN interfaces (X1, X2), using an 8-pin Weidm ü ller connector. The CAN bus requires the correct setting of station numbers (0-15) and baud rates. Set the station number through DIP switches (8-bit): switches 1-4 set the station number, switches 5-6 set the baud rate (00=615kBit/60m, 10=500kBit/s/80m, 01=250kBit/s/160m, 11=125kBit/320m), switch 7 sets PS/2 master-slave (0=slave, 1=master), and switch 8 sets the CAN terminal resistance (150 Ω). Attention: Each CAN system station number must be unique, and terminal devices must have terminal resistors enabled. CAN cables should use twisted pair shielded wires, with a large area of low resistance grounding for the shielding layer.

USB interface: The front panel has 3 USB Type-A V1.1 interfaces (X5, X6, X7), and the rear panel has 1 USB Type-A V1.1 (X3). Note: X3 and X5 cannot be used simultaneously. The USB interface can be used to connect keyboards, mice, storage devices, etc. But BIOS settings are only available when the keyboard is directly connected to the USB interface, using a USB hub may cause errors. In addition, many commercially available USB devices do not comply with specifications, and it is recommended to test them before use.

ESD protection: USB devices are usually not shielded, and ESD may cause interference. Before connecting or disconnecting any equipment, static electricity should be discharged through the grounding bus.

Common troubleshooting

Abnormal touch function: If the touch is inaccurate or ineffective, the touch screen needs to be recalibrated. Calibration data is stored in the IPC, not in the display unit. It is necessary to recalibrate every time the display unit or IPC is replaced. In addition, automatic display detection requires support from both parties, otherwise the resolution needs to be manually set in BIOS or OS.

CAN communication failure: Check if the station number conflicts, if the baud rate matches, and if the terminal resistance is set correctly. Incorrect DIP switch settings are a common cause. Simultaneously confirm the CAN cable shielding and twisted pair connection.

Display Exception: If the display resolution is incorrect, check the BIOS/OS settings of IPC. If automatic detection fails, manual setting of 1024x768 is required. Also check if the S-DVI cable connection is secure.

USB device not recognized: Confirm that the device complies with USB specifications. Try connecting the keyboard directly to enter BIOS settings. Avoid using a USB hub for BIOS setup.

Power supply issue: If the display unit does not light up, measure whether the S-DVI cable power supply voltage is between+18-30V DC. Check if the IPC power capacity is sufficient.

Environmental interference: If there is touch drift or communication error, check whether the grounding is good, whether the shielding layer is connected, and whether it is within the allowable temperature and humidity range.

Maintenance and Cleaning

To extend the service life of TAE 151, it is necessary to regularly clean the touch screen and housing. Be sure to turn off the terminal power before cleaning to avoid accidental triggering. Use a soft damp cloth dipped in screen cleaner, water, mild detergent, or alcohol. The cleaning solution should be sprayed on the cloth, not directly on the terminal, to prevent the liquid from entering the ventilation hole or electronic components. It is strictly prohibited to use abrasive cleaners, chemical solvents, or hard objects to scratch the touch screen. If you come into contact with toxic or corrosive chemicals, you should clean them carefully immediately. The ASA plastic shell is resistant to most chemicals, but contact with toluene, acetone, ether, and ethyl acetate should be avoided. The touch film is resistant to mineral oil, alcohol, machine oil, cleaning agents, etc. Suggest operating the touch screen with your fingers to extend its lifespan.