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CR-20 RFID Reader with MAC-D2 Controller for Boom Barrier Integration
This wiring diagram illustrates the complete connection setup between the MORX CR-20 UHF RFID Reader, SEMAC MAC-D2 Access Controller, Boom Barrier Controller, and Photocell Safety Sensor. The solution enables automated vehicle access control by triggering the boom barrier when an authorised RFID tag is detected.
System Overview
The CR-20 RFID Reader reads vehicle RFID tags and transmits the credential data to the MAC-D2 Controller through the Wiegand D0 and D1 communication lines. Upon successful verification, the MAC-D2 Controller activates the boom barrier relay output, allowing authorised vehicles to enter or exit automatically.
Wiring Connections`
- D0 → D0 (Green Wire)
- D1 → D1 (Red Wire)
- GND → GND (Black Wire)
Wire Colour Identification
| Wire Color | Function |
|---|---|
| Black | Ground (GND) |
| Green | Wiegand D0 Data |
| Red | Wiegand D1 Data |
| Blue | Power / IR / Open / NO Signal |
Boom Barrier Controller Settings
For proper operation, configure the boom barrier controller as follows:
- SENCE: ON
- IR: ON
- STOP: ON
- CLOSE: ON
- OPEN: ON
- GND (Without Photocell): Jumper to 12V
MAC-D2 Controller Settings
| Function | Setting |
|---|---|
| Access Mode | Pulse |
| Door Mode | Barrier |
| Pulse Time (D0) | 3.0 Seconds |
| Pulse Time (D1) | 3.0 Seconds |
Photocell Safety Protection
The photocell sensor is connected to prevent the boom barrier from closing when a vehicle or obstacle is detected within the barrier path. This improves safety and protects vehicles from accidental barrier movement.
Key Benefits
✔ Automatic RFID-based vehicle access control
✔ Fast and secure tag authentication
✔ Simple Wiegand D0/D1 integration
✔ Safety protection through photocell sensing
✔ Compatible with parking lots, gated communities, industrial facilities, and logistics centres
How It Works
- Vehicle approaches the gate.
- CR-20 Reader detects the RFID tag.
- Tag data is sent to the MAC-D2 Controller via D0 and D1.
- MAC-D2 validates access permissions.
- Relay output triggers the boom barrier.
- Photocell sensor monitors the passage area for safety.
- Barrier closes automatically after vehicle passage.
This configuration provides a reliable, hands-free vehicle access solution for modern parking and access control applications.