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 CCTV systems. The device integrates with telemetry transmitters such as control keyboards, DVRs, video capture cards, and video servers, executing commands sent via the RS-485 bus or Manchester standard.
The decoder provides full control over the camera's optical parameters, including Zoom, Focus, and Iris. Additionally, thanks to its built-in relays, it allows for remote management of auxiliary devices, such as camera housing wipers or infrared 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.
- ✔ Ability to address up to 64 independent MOTO-ZOOM lenses in a single system.
- ✔ Automatic communication protocol detection mode.
- ✔ Two-way switch output (normally open).
- ✔ Three 12V output voltages (alternating positive or negative) for optical control.
- ✔ RS-485 communication standard ensuring a long transmission range.
- ✔ Configurable device address and transmission speed (Baud rate).
- ✔ Two additional relay voltage outputs for auxiliary functions.
Application in Distributed Systems
Thanks to support for up to 64 unique addresses, by connecting subsequent AC3082 controllers, you can create an extensive system for controlling multiple MOTO-ZOOM lenses from a single control keyboard or recorder.
2 Technical Specifications
| 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 | Two-way, normally open |
| Relay power | 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
RS-485 bus connection
The controller must be connected to the RS-485 bus maintaining proper polarity (A+ and B-). In multi-point systems, devices must be connected in parallel. Ensure that the transmission speed (Baud rate) in the controller matches the transmitter settings (default values are 2400, 4800, 9600 bps).
Motozoom lens control
The device generates three 12V DC output voltages with variable polarity. This allows for lens motor movement in both directions:
- Zoom: Zoom in and zoom out.
- Focus: Focus adjustment (far/near).
- Iris: Opening and closing the aperture.
Relay outputs (Auxiliary)
Two additional voltage outputs can be used to control accessories. These relays operate in a normally open mode. To use them, the DVR or control keyboard must support the "Wiper" or "Light" (auxiliary light) functions.
4 Safety Instructions
Important safety rules:
- The device requires a stable 12V DC power supply. Connecting a higher voltage may permanently damage the controller.
- Always disconnect the power before connecting cables.
- Do not exceed the maximum output current (800mA) for the lens control outputs.
- The device is intended for indoor use or in sealed external enclosures (ingress protection depends on the camera housing used).
- Protect the electronics from direct exposure to water, humidity above 70%, and extreme temperatures outside the -10°C to +50°C range.
- Installation should be carried out by a person with basic knowledge of low-voltage CCTV installation.
5 Troubleshooting
No response to PTZ commands:
Check the correctness of the RS-485 wiring (swap A and B for testing). Ensure that the address set on the controller matches the address selected in the recorder/keyboard.
Protocol error:
Despite the auto-detection function, ensure the transmitter is operating in Pelco-D or Pelco-P standard. Check if the transmission speed (Baud rate) is identical across the entire system.
Lens motor operates 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.