VF-747P RFID UHF Fixed Industrial Reader

1 Product Overview

The VF-747P reader is the latest generation product developed by VANCH Intelligent Technology. It can read and write "electronic tags" (or "cards") that meet the EPC CLASS1 G2 standard. The reader is used in data acquisition systems such as card issuance and personnel access control management.

1.1 Shape and interface

The VF-747P reader/writer has an aluminum alloy shell and can be installed in an indoor cabinet or an outdoor protective box with good ventilation, dust, and rain conditions. The reader is divided into antenna interface end face, communication interface end face, and LED indicator face.

Antenna Ports (P 1-1-1)

The VF-747P has four antenna ports: ANT1, ANT2, ANT3, and ANT4. These are SMA male RF interfaces.

[Image: VF-747P reader with four antenna ports labeled 4G/WIFI, ANT1, ANT2, ANT3, ANT4]

Communication Interface (P 1-1-2)

The communication interface has the following characteristics:

• Power Port: DC12V female
• RJ45 Communication Interface: Standard version connects directly to the network. POE power supply is supported (requires switch to support pins 1, 2, 3, and 6 for power supply). Optional version has a super network port without POE power supply.
• RS232
• GPIO: Double 10 stitches.

GPIO Interface Terminal Definition (from left to right):

Special attention: "GND" in GPIO becomes the RJ45 network port on the right.

LED Light (P 1-1-3)

[Image: VF-747P reader front panel showing LED indicators labeled Power, RF, RUN]

LED Instruction meaning:

• Red light (Power indicator): Power is on.
• Green light (RF light): Flashing green indicates the reader is receiving/sending data and commands.
• Yellow light (Running indicator): Flashing yellow indicates the device is operating normally.

1.2 Performance

• Working frequency: 865~868MHz (EU), 902~928MHz (US), 920~925MHz (CN). Adjust working frequency according to country/region to avoid interference with other radio communication equipment.
• Working mode: Continuous (automatic), command, trigger.
• RF power: 0~33dBm adjustable.
• Communication rate: Serial port rate is 9600~115200bps, RJ45 is 10Mbps.
• Reading distance: 0-25000mm (related to reader configuration, antenna gain, tag type).
• Writing distance: 0-1000mm (related to reader configuration, antenna gain, tag type).
• Power supply: Method 1: AC100-240V, 50/60Hz, 2.0A input; DC 12.0V, 3.0A output. Method 2: POE power supply (supports 100M 1236 line sequence power supply).
• Optional heating device: Automatic heating device (optional, customers can determine based on project needs).
• Power consumption: Maximum 15W.
• Whole machine weight: Approximately 1.32kg (complete set).
• Working temperature: -20°C to +40°C.
• Buzzer: Built-in buzzer sounds when the reader reads an electronic tag.

1.3 Function

• Read and write tags compliant with EPC ISO18000-6C and ISO18000-6B.
• Read multiple EPC code labels of different lengths (16, 32, 48, 64, 80, or 96 bits) simultaneously.
• Read EPC data of the selected tag.
• Read user area data of the selected label.
• Read data in the TID area of the selected tag.
• Read tag access and destruction passwords (32 bits each).
• Write EPC codes of various lengths (16, 32, 48, 64, 80, 96 bits).
• Write user area data.
• Modify tag access and destruction passwords (32 bits each).

2 Product installation

2.1 Connection relationship

The connection relationship between the reader, antenna, electronic tag, and controller (or PC) in the application system is shown in the figure.

[Image: Diagram showing PC connected to VF-747P reader, which is connected to an RFID Tag via an antenna]

2.2 Installation Procedure

Follow these steps for equipment installation:

1. Put the reader.
2. Install antenna.
3. Connect the reader and antenna.
4. Connect reader and controller.
5. Equipment joint debugging.
6. Put labels.

2.3 Install reader

Pay attention to the following when installing the reader:

• The VF-747P reader is not specially waterproof or dustproof. Its working temperature range is -20℃~+40℃, making it more suitable for indoor environments. For outdoor installation, use a protective box with rainproof, dustproof, heat preservation, and heat insulation functions.
• The RF line distance between the reader and the antenna should not exceed 10 meters (3 meters is better).
• The maximum reliable communication distance between the reader and the controller varies with the data interface.

Communication Interface Distances:

• RJ45 Interface: Supports 10M/100M transmission rate. Recommended transmission distance is not greater than 50 meters using a network cable.
• RS485 Interface: Connect RS485+ (brown) and RS485- (blue) wires to the corresponding controller pins. Recommended transmission distance is not greater than 80 meters.
• RS232 Interface: Connect directly to the PC using the supporting cable. Recommended transmission distance is not greater than 10 meters.

[Image: Wiring diagram for RS232 connection between reader and PC, showing pin connections]

2.4 Install antenna

Consider position, height, and angle for antenna installation to meet application requirements:

• Ensure the antenna beam range covers reliable reading of electronic tags.
• The RF cable length from the antenna to the reader should not exceed 10 meters, preferably not more than 3 meters.
• The antenna can be installed horizontally (gantry) or vertically (post). Ensure the polarization direction of the antenna matches the polarization direction of the electronic tag.

2.5 Connect the antenna and reader

The VF-747P reader has 4 SMA male RF interfaces requiring low-loss coaxial cables. Shorter cable lengths result in less attenuation of high-frequency signals. Using ordinary cables or increasing cable length can affect reading and writing distance.

• For distances within 3 meters, use a 1/2 feeder. For distances over 3 meters, use a 7/8 feeder. Cable length must not exceed 10 meters.
• Ensure cable connectors are tightened and sealed (e.g., with heat shrink or tape) to protect them.
• WIFI/4G connection port and antenna are optional.

Note: It is not recommended to use ordinary cables or assemble cable connectors yourself.

2.6 Connect the reader and the host computer

The VF-747P reader can connect to a host computer (PC) via RS232 or RJ45 ports.

Connect through the RJ45 port (P 2-6-1):

[Image: VF-747P reader's RJ45 port and connected network cable]

The reader connects directly to the PC. Wiring arrangement:

[Image: RJ45 wiring diagram showing connections between reader and PC ports]

Pin connections for RJ45:

• Reader RJ45 Pin 1 to PC RJ45 Pin 3.
• Reader RJ45 Pin 3 to PC RJ45 Pin 1.
• Reader RJ45 Pin 2 to PC RJ45 Pin 6.
• Reader RJ45 Pin 6 to PC RJ45 Pin 2.
• Other pins connect correspondingly. Connection is via Hub using a straight-through cable.

Connection through RS232 port:

The RS232 port connects directly to the PC with the supporting cable. The RS232 connection line length should be less than 10 meters.

[Image: Connection diagram for RS232 port (P 2-6-3)]

2.7 Connecting power Supplies

The VF-747P reader/writer uses a +12/3A DC power supply. An AC/DC converter is provided.

Power connection steps:

1. Confirm AC power supply voltage and frequency meet requirements (AC100~240V/50Hz).
2. Insert the DC output plug of the power converter into the reader's +12V DC input port.
3. Connect the converter's 220V AC power input line to the AC power supply.
4. The red power indicator light on the reader should be on, indicating normal power input.

2.8 The equipment alignment

Equipment alignment involves adjusting antenna height, direction, and inclination to ensure the reader can read tags within the desired range. Debugging method:

1. Turn on the reader, set it to timing working mode, close the parameter setting program, and disconnect from the PC.
2. Turn the reader off and then on again; it will automatically enter the timing working state.
3. Affix an electronic label to an object with the same material as the target surface. Move the object back and forth within the expected reading range. If the reader reads the label correctly, the built-in buzzer will sound and the RF LED will flash.
4. Adjust antenna height and angle for optimal reading range.

Note: The reader emits microwave power only during reading/writing. Personnel should maintain at least 70cm distance from the antenna to comply with FCC RF exposure requirements for the human body.

2.9 Attach label

When applying labels in RFID systems, consider the following:

• Use the adhesive recommended by the manufacturer.
• For labels on metal surfaces, use special adhesive glue.
• The label's position on the object must be tested in the field for optimal read/write effect.

3 Common Faults

Table 4-1 lists common faults and solutions for readers.

CAUTION

Safety and Compliance

• Use earphones carefully to avoid hearing loss from excessive sound pressure.
• CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. Dispose of used batteries according to instructions.
• Connect the product only to a USB interface of version USB2.0.
• The adapter should be installed near the equipment and easily accessible.
• Operation temperature: -20~40° C.
• The plug serves as the disconnect device for the adapter.
• The device complies with RF specifications when used at 50cm from the body.
• AC adapter: Model No.: TDX-1203000, Input: 100-240V~, 50/60Hz, 2.0A, Output: 12.0Vdc, 3.0A.

Shenzhen VANCH Intelligent Technology Co., Ltd declares that this UHF RFID Industrial Reader complies with the essential requirements and other provisions of Directive 2014/53/EU. Information should be easily understandable, typically requiring translation into local languages. Illustrations and pictograms can aid understanding.

Max power: RFID: 31.802 at 865MHz-868MHz.

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions:

• (1) This device may not cause harmful interference.
• (2) This device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses, and can radiate radio frequency energy. If not installed and used according to instructions, it may cause harmful interference to radio communications. There is no guarantee that interference will not occur in a particular installation. If interference occurs, try to correct it by:

• Reorienting or relocating the receiving antenna.
• Increasing the separation between the equipment and receiver.
• Connecting the equipment to an outlet on a different circuit from the receiver.
• Consulting a dealer or experienced radio/TV technician.

The distance between the user and the product, including the antenna, should be no less than 20cm during normal operations.

IC Statement

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to two conditions:

• (1) This device may not cause interference.
• (2) This device must accept any interference, including interference that may cause undesired operation.

This equipment complies with IC radiation exposure limits for an uncontrolled environment. End users must follow specific operating instructions for RF exposure compliance. This transmitter must not be co-located or operated with any other antenna or transmitter.

To comply with RF exposure requirements, a minimum separation distance of 30mm must be maintained between the user's body and the handset, including the antenna. Third-party accessories should not contain metallic components. Use only the supplied or an approved antenna.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.

Ce dispositif est conforme aux normes autoriser-exemptes du Canada RSS d'industrie. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Cet équipement est conforme avec l'exposition aux radiations IC définies pour un environnement non contrôlé. L'utilisateur final doit respecter les instructions de fonctionnement spécifiques pour satisfaire la conformité aux expositions RF. Cet émetteur ne doit pas être co-localisées ou opérant en conjonction avec une autre antenne ou transmetteur.

Pour se conformer aux exigences d'exposition aux radiofréquences, une distance minimale de 30 mm doit être maintenue entre le corps de l'utilisateur et le combiné, y compris l'antenne. Les pinces de ceinture, les étuis et autres accessoires similaires utilisés par cet appareil ne doivent pas contenir de composants métalliques. Les accessoires portatifs qui ne répondent pas à ces exigences peuvent ne pas se conformer aux exigences d'exposition RF et doit être évitée. Utilisez uniquement l'antenne fournie ou une antenne approuvée.