1 Purpose and Functions
The ACTii AC3082 controller is an advanced RS-485 signal decoding device designed for precise control of MOTO-ZOOM lenses and additional accessories in Closed-Circuit Television (CCTV) systems. The device integrates with telemetry transmitters such as control keyboards, DVR recorders, video capture cards, and video servers, executing commands sent via the RS-485 bus or Manchester standard.
The decoder allows for full control over camera optical parameters, including Zoom, Focus, and Iris. Additionally, thanks to built-in relays, it allows for remote management of auxiliary devices, such as camera housing wipers or illuminators, provided the control system (e.g., DVR) supports Auxiliary functions.
Main features:
- ✔ Full support for PELCO-D and PELCO-P protocols with automatic recognition function.
- ✔ Capability to address up to 64 independent MOTO-ZOOM lenses in a single system.
- ✔ Communication protocol automatic detection mode.
- ✔ Dual-direction switch output (normally open).
- ✔ Three 12V voltage outputs (alternating positive or negative) for optics control.
- ✔ RS-485 standard communication ensuring long transmission range.
- ✔ Configurable device address and baud rate.
- ✔ Two additional voltage relay outputs for auxiliary functions.
Use in distributed systems
Thanks to the support for up to 64 unique addresses, by connecting subsequent AC3082 controllers, you can create an extensive control system for multiple MOTO-ZOOM lenses from a single control keyboard or recorder.
2 Technical Specification
| Supply voltage | DC 12V |
| Communication | RS485 |
| Protocols | PELCO-D / PELCO-P (automatic identification) |
| Transmission speed | 2400, 4800, 9600 bps (adjustable) |
| Addressing range | 1 - 64 |
| Switch type | Dual-direction, normally open |
| Relay rating | AC 270V / 10A; DC 125V / 12A |
| Voltage outputs | 3x 12V (alternating plus or minus) |
| Output current | 800mA |
| Product dimensions | 76 x 45 x 10 mm |
| Operating temperature | -10°C to +50°C |
| Operating humidity | 10% - 70% RH |
| Product weight | 80 g |
| Certificates | CE, RoHS |
3 Installation and Connection
Connecting the RS-485 bus
The controller must be connected to the RS-485 bus while maintaining correct polarity (A+ and B-). In multi-point systems, devices should be connected in parallel. Ensure that the transmission speed (baud rate) on the controller matches the settings of the transmitting device (default available values are 2400, 4800, 9600 bps).
Motozoom lens control
The device generates three 12V DC voltage outputs with variable polarity. This allows for motor lens movement in both directions:
- Zoom: Image zoom in and out.
- Focus: Focus adjustment (far/near).
- Iris: Opening and closing the iris.
Relay outputs (Auxiliary)
Two additional voltage outputs can be used to control accessories. These relays operate in normally open mode. To use them, the DVR or control keyboard must support "Wiper" or "Light" (auxiliary light) functions.
4 Safety Instructions
Important safety rules:
- The device requires stable DC 12V power supply. Connecting a higher voltage may permanently damage the controller.
- Always disconnect power before connecting wires.
- Do not exceed the maximum output current (800mA) for lens control outputs.
- The device is designed for indoor use or in sealed outdoor enclosures (IP rating depends on the camera housing used).
- Protect electronics from direct exposure to water, humidity above 70%, and extreme temperatures outside the -10°C to +50°C range.
- Installation should be performed by a person with basic knowledge of low-voltage CCTV installations.
5 Troubleshooting
No response to PTZ commands:
Check the correctness of the RS-485 wire connections (swap A with B to test). Ensure the address set on the controller matches the address selected on the recorder/keyboard.
Protocol error:
Despite the auto-detection function, ensure the transmitting device operates in Pelco-D or Pelco-P standard. Check if the baud rate is identical throughout the entire system.
Lens motor works in one direction only:
Check the connections between the controller and the lens. Ensure that the current drawn by the motor does not exceed 800mA.