Pro-face AST3501-C1-D24 Color Touch Screen

This is a 10.4-inch VGA color touch screen from the Pro-face ST3000 series, model AST3501-C1-D24 (global part number: PFXST3501CAD). Discontinued on December 28, 2012. The standard replacement model is PFXGP4501TADW (GP-4501TW).

Model Breakdown Definition

Segment	Code	Meaning
Product Series	AST	ST3000 Series Standard Programmable Human-Machine Interface (HMI)
Size & Type	3501	35 = 10.4-inch color display; 01 = base model
Front Panel Type	C1	Standard color front panel (C = Color)
Power Specification	D24	DC24V power supply (D = DC, 24 = 24V)

Global Part Number Mapping: PFXST3501CAD

(PFX = Pro-face global prefix; ST = ST3000 series; 3501 = model code; C = Color; AD = Standard configuration)

Core Specifications

2.1 Display Parameters

Item	Specification
Display Type	TFT Color LCD (10.4-inch)
Resolution	640×480 pixels (VGA)
Display Colors	16 colors (Standard) / 64 colors (with blink) / 256 colors (non-blink mode)
Active Display Area	211.2×158.4 mm
Brightness Adjustment	8-level adjustable (via touch panel)
Backlight Type	Cold Cathode Fluorescent Lamp (CCFL)
Backlight Lifespan	Approx. 50,000 hours (at 25℃ ambient)

2.2 Memory & Processor

Item	Specification
Application Program Memory	6MB FLASH EPROM
Data Backup Memory	320KB SRAM (with lithium battery backup)
CPU Performance	Built-in high-speed processor (8 times faster than earlier models)

2.3 Interface Configuration

Interface Type	Quantity & Specification
Serial Communication	COM1: RS-232C; COM2: RS-422/RS-485
USB Port	1 × USB Host (Type A)
CF Card Slot	1 (for storage expansion and data backup)
Auxiliary I/O	1 set (for external device connection)
Audio Output	1 (for alarm notification)
Ethernet	None (Ethernet port not standard on this model)

2.4 Electrical & Environmental Ratings

Item	Specification
Power Input	DC24V (Standard S-type), Voltage range: 21.6~26.4V DC
Power Consumption	Max approx. 25W (including backlight)
Operating Temperature	0℃~50℃
Storage Temperature	-20℃~+60℃
Operating Humidity	10%~90% RH (non-condensing, wet bulb ≤39℃)
Protection Grade	Front panel IP65f, Rear IP20
Vibration Resistance	Compliant with IEC 61131-2
Shock Resistance	Compliant with IEC 61131-2

2.5 Mechanical Dimensions

Item	Specification
Overall Dimensions	W270.5 × H215.5 × D56.5 mm
Panel Cutout Size	W259 × H204 mm
Mounting Depth	Approx. 56.5 mm
Weight	Approx. 2.2 kg

Standard Package Accessories

Item	Qty	Remarks
AST3501-C1-D24 Main Unit	1 Set	Includes touch screen body
Installation Manual (CN/EN)	1 Each	With safety instructions
Power Cable	1 Pc	Dedicated DC24V power cable
Touch Stylus	1 Pc	For precise touch operation
Lithium Battery	1 Pc	For SRAM data backup (pre-installed)
Warranty Card	1 Pc	Standard 1-year warranty

Competitor & Cross-Brand Replacement

4.1 Pro-face Internal Replacement Model

Original Model	Replacement Model	Major Improvements
AST3501-C1-D24	PFXGP4501TADW (GP-4501TW)	1. Display: 65,536-color true-color TFT LCD
		2. Backlight: LED (lifespan >50,000 hours)
		3. Larger memory capacity
		4. Added Ethernet port
		5. Grid-free analog touch panel
		6. Supports latest GP-Pro EX software

Replacement Advantages: Panel cutout compatible for direct mounting replacement; software compatible, existing GP-Pro EX projects can be migrated directly.

4.2 Cross-Brand Equivalent Models (Same Specification Level)

Brand	Model	Core Spec Comparison	Advantages
Weinview	TK6102i	10.4-inch, 640×480, 65536 colors, Ethernet	Cost-effective, free programming software
Mitsubishi	GT1155-QSBD-C	10.4-inch, 640×480, 256 colors, RS-232/422/485	Excellent compatibility with Mitsubishi PLCs, complete protocol support
Siemens	KTP1000 Basic	10.4-inch, 640×480, 65536 colors, Ethernet	Seamless integration with Siemens S7 series PLCs, PROFINET supported
Schneider	XBTGT5330	10.4-inch, 640×480, 65536 colors, Ethernet	Multi-industrial protocol support, high security performance

Selection Guidelines & Replacement Solutions

5.1 Application Scenarios

Existing Equipment Maintenance: For production lines already installed with ST3000 series requiring spare parts replacement

Small & Medium Control Systems: Applications with basic display requirements (16 colors sufficient) and no Ethernet demand

Budget-Limited Projects: Low cost in second-hand market, suitable for low-budget renovation

5.2 Selection Notes

Discontinued Status: Discontinued since 2012; select replacement model PFXGP4501TADW for new purchase

Software Compatibility: Only supports GP-Pro EX V2.7 and earlier versions

Spare Parts Procurement: Prioritize original second-hand units or professional repair services for quality assurance

Upgrade Suggestion: If Ethernet, higher color depth or larger memory is required, choose GP4000 series replacement directly

5.3 Recommended Replacement Solutions

Requirement Scenario	Recommended Solution	Implementation Points
Direct Replacement (Same Function)	PFXGP4501TADW (GP-4501TW)	1. Fully compatible panel cutout
		2. Existing project files importable directly
		3. No modification needed for power and communication wiring
Function Upgrade (Add Ethernet)	PFXGP4501TADW + Ethernet Module	1. Realize remote monitoring and data acquisition
		2. Supports Modbus TCP and other industrial Ethernet protocols
Cost Optimization (Second-hand)	Original Used AST3501-C1-D24	1. Inspect backlight lifespan and touch sensitivity
		2. Confirm no obvious physical damage
		3. Test communication ports and storage function
Full System Upgrade (New Project)	Higher-spec GP4000 Series	1. Select larger memory and higher resolution
		2. Support more protocols and expansion modules
		3. Longer warranty and technical support

The AST3501-C1-D24 is a classic 10.4-inch color touch screen of the Pro-face ST3000 series. Though discontinued, it remains valuable for legacy equipment maintenance. Its core strengths are industrial reliability, IP65f front panel protection, and excellent compatibility with various PLCs. For new procurement or system upgrading, PFXGP4501TADW is recommended for better display performance, richer functions and longer product lifecycle.

Complete Guide to Replacement Models for Pro-face AST3501-C1-D24

Key Conclusion: The official standard replacement is PFXGP4501TADW (GP-4501TW) (compatible panel cutout, seamless software migration). Cross-brand alternatives include Weinview TK6102i, Mitsubishi GT2310-VTBD, Siemens KTP1000 Basic, Schneider XBTGT5330, all 10.4-inch VGA-grade industrial HMIs with respective protocol and cost advantages.

Official Pro-face Internal Replacement (Recommended Priority)

Original Model	Official Replacement	Global Part No.	Replacement Compatibility	Core Upgrades
AST3501-C1-D24	PFXGP4501TADW (GP-4501TW)	PFXGP4501TADW	✅ Fully compatible cutout (W259×H204mm)	1. Display: 65,536 true colors vs original 16 colors
			✅ Seamless software migration (direct GP-Pro EX project import)	2. Backlight: LED >50,000hrs vs original CCFL
			✅ No change for power/communication wiring	3. Larger memory (6MB FLASH+320KB SRAM original)
				4. New Ethernet port (none on original)
				5. Grid-free analog touch panel
				6. Supports latest GP-Pro EX version

Replacement Advantage: Officially designated only standard replacement solution, offering longest product lifecycle and full technical support; the 2012 replacement manual explicitly recommends it for all ST3500 series models.

Cross-Brand Equivalent Models (Same Grade)

All below are 10.4-inch VGA industrial HMIs suitable for replacing AST3501-C1-D24.

2.1 Weinview

Model	Core Specs	Advantages	Application
TK6102i	10.4-inch, 640×480, 65536 colors, RS-232/485, Ethernet, USB, SD Card	1. Most cost-competitive	Budget projects, Ethernet required, multi-brand PLC communication
		2. Free EasyBuilder Pro software
		3. Multi-protocol support
		4. Global service network

2.2 Mitsubishi Electric

Model	Core Specs	Advantages	Application
GT2310-VTBD	10.4-inch, 640×480, 65536 colors, RS-232/422/485, Ethernet, USB, SD Card	1. Deep integration with Mitsubishi PLC	Mitsubishi PLC system, CC-Link network, high stability demand
		2. Complete MELSEC protocol support
		3. High industrial reliability
		4. CC-Link fieldbus support
GT2510-VTBD	10.4-inch, 640×480, 65536 colors, LED backlight, multi-interfaces	1. Higher-performance CPU	Complex control projects, massive data processing
		2. Larger memory
		3. More expansion modules

2.3 Siemens

Model	Core Specs	Advantages	Application
KTP1000 Basic	10.4-inch, 640×480, 65536 colors, Ethernet, USB, PROFINET	1. Seamless integration with Siemens S7 PLC	Siemens PLC system, PROFINET, remote monitoring
		2. PROFINET support
		3. Built-in Web server
		4. Global Siemens technical support
TP1000 Comfort	10.4-inch, 640×480, 65536 colors, multi-interfaces, script support	1. Powerful programming functions	Complex HMI applications, custom function required
		2. VB script supported
		3. Strong expandability

2.4 Schneider Electric

Model	Core Specs	Advantages	Application
XBTGT5330	10.4-inch, 640×480, 65536 colors, Ethernet, USB, SD Card	1. Multi-protocol support (Modbus, Ethernet/IP etc.)	Schneider PLC system, high safety demand, harsh industrial environment
		2. High safety design
		3. Optimized with Schneider PLC
		4. Rugged industrial design
HMIGXU3512	10.4-inch, 640×480, 65536 colors, LED backlight, multi-interfaces	1. Latest generation model	New project design, long-term lifecycle planning
		2. Higher performance
		3. Longer lifecycle

2.5 Other Brand Replacements

Brand	Model	Core Advantages
Allen鈥態radley	PanelView Plus 7 1000	Perfect integration with Rockwell PLC, EtherNet/IP supported
Omron	NB10W-TW01B	Seamless connection with Omron PLC, multi-protocol compatible
Xinje	TG765-XT-C	High cost performance, multi-communication protocol, suitable for small/medium projects

Replacement Selection Guide

3.1 Selection by Demand

Demand Type	Recommended Solution	Key Implementation Points
Direct Replacement (Minimal Modification)	Pro-face GP-4501TW	1. Compatible cutout for direct mounting
		2. Existing project files importable directly
		3. No wiring change for power and communication
Function Upgrade (Add Ethernet)	GP-4501TW / Weinview TK6102i	1. Realize remote monitoring & data collection
		2. Support Modbus TCP and other industrial Ethernet protocols
Unified Brand (Same PLC Brand)	Matched brand HMI (e.g. Mitsubishi GT2310)	1. Highest PLC integration
		2. Less communication configuration work
		3. Unified technical support
Cost Optimization (Limited Budget)	Weinview TK6102i / Xinje TG765	1. Obvious price advantage
		2. Free software reduces project cost
Full Upgrade (New System)	Higher-spec GP4000 Series	1. Choose larger memory & higher resolution
		2. Support more protocols and expansion modules

3.2 Replacement Precautions

Panel Size: Ensure replacement cutout matches original AST3501 dimension W259×H204mm
Communication Protocol: Confirm compatibility with existing PLC protocol
Software Compatibility: Verify project migration feasibility or re-program requirement
Power Rating: Ensure replacement supports DC24V input same as original D24
Spare Parts Supply: Prioritize in-production models to avoid future discontinuation risk
Conclusion

The best replacement for Pro-face AST3501-C1-D24 is the official PFXGP4501TADW (GP-4501TW) with seamless replacement and full upgrading. For cross-brand selection, choose according to existing PLC brand, functional requirements and budget: Weinview TK6102i for best cost performance, Mitsubishi GT2310-VTBD for optimal Mitsubishi PLC integration, and Siemens KTP1000 Basic for Siemens system application.