Key Technical Specifications
- Product Model: ETT-VGA-0045
- Manufacturer: UNIOP
- Display Size: 10.4 Inches
- Resolution: 640 x 480 Pixels (VGA)
- Display Type: TFT LCD
- Touchscreen Type: Resistive
- Input Power: 24V DC (+10%, -15%)
- Protection Rating: IP65 (Front Panel)
- Operating Temp: 0°C to 45°C
- Memory: 32MB User Memory
Product Introduction
Older HMIs take a beating on the factory floor. Operators lean on them, wipe them with dirty rags, and spill coolant on them. The UNIOP ETT-VGA-0045 is a 10.4-inch resistive touch panel built for this exact abuse. It connects directly to PLC programming ports and gives you a clear, no-nonsense 640×480 VGA display for your process data.I like this panel because it uses a resistive screen. You can use it with thick winter gloves or a stylus, unlike modern capacitive screens that drive maintenance guys crazy when their hands are wet. It draws 24V DC and has an IP65 front panel, meaning dust and washdowns won’t kill it. Just don’t use harsh chemical cleaners on it; they eat the resistive coating over time.
Quality SOP & Tech Pitfalls
We don’t just box these up. Every UNIOP ETT-VGA-0045 gets a visual inspection for screen scratches or cracked bezels. We power it up on a 24V bench supply, load a test project, and verify all touch zones respond accurately. We check the backlight brightness and inspect the RS232/Ethernet pins for corrosion before sealing it.Here is the biggest trap with this unit: The resistive touch layer degrades if you use Windex or ammonia-based cleaners. I’ve seen panels returned as “dead” that were actually just unresponsive because someone stripped the top film. Also, verify your COM port pinout. UNIOP uses specific RS232 wiring for PLCs. Plugging in a generic straight-through cable often results in a blank screen and a “Comm Error.”
Installation & Configuration Guide
- Pre-Installation: ⚠️ DISCONNECT 24V POWER. Take a photo of the serial cable wiring and the DIP switch settings on the back of the old panel.
- Removal: Pop the panel out of the cutout. Clean the gasket groove on the cabinet door thoroughly; old gaskets turn to mush and cause IP65 leaks.
- Installation: Set the DIP switches exactly like the old unit. This sets the node ID and baud rate. Slide the new ETT-VGA-0045 in and tighten the mounting brackets evenly to compress the gasket.
- Power-On & Testing: Apply 24V DC. Verify the backlight turns on. Download your project via UniOP Designer. Test touch accuracy by hitting the corners of the screen.
Compatible Replacement Models
| Compatibility | Model | Notes |
|---|---|---|
| ✅ Drop-in | ETT-VGA-0045 | Exact match. No config changes needed. |
| ✅ Drop-in | ETT-VGA-0045-01 | Minor hardware revision. Pin-compatible. |
| ⚠️ Software | ER-25T-0045 | Same size/res. May require project file conversion. |
| ❌ No Go | ECT-VGA-0045 | Different connector pinout. Do not use. |
Frequently Asked Questions (FAQ)
Can I use a capacitive stylus on this?
No. It’s a resistive screen. It requires physical pressure. A plastic stylus, your fingernail, or a gloved finger will work fine.Why is my screen completely white?
Check your 24V power supply. If the voltage drops below 19V under load, the backlight inverter will shut down. Also, verify the backlight hasn’t simply burned out (common on old CCFL units).Do I need UniOP Designer to program this?
Yes. You can’t use standard PLC software. You need UniOP Designer (version 5.08 or newer) to build the HMI screens and compile the project.Is the 640×480 resolution standard VGA?
Yes. It’s true VGA. If your old panel died, you can sometimes pull the project file from the dead unit using a serial transfer cable and load it straight into this one.What does the IP65 rating actually mean here?
It means the front of the panel is dust-tight and protected against water jets. The back of the panel is not waterproof. Keep the backside inside a NEMA 4/12 enclosure.My touch is off by half an inch. Is it broken?
Probably not. Resistive screens drift over time. Go into the system menu and run the 4-point calibration routine. It takes 10 seconds and fixes 90% of these complaints.
