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 industrial 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 the Manchester standard.
The decoder enables full control over camera 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 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.
- ✔ Ability to address up to 64 independent MOTO-ZOOM lenses in one system.
- ✔ Communication protocol auto-detection mode.
- ✔ Bidirectional switch output (normally open).
- ✔ Three 12V output voltages (alternating positive or negative) for lens control.
- ✔ RS-485 standard communication ensuring long transmission range.
- ✔ Possibility to configure device address and transmission speed (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) |
| Baud rate | 2400, 4800, 9600 bps (adjustable) |
| Addressing range | 1 - 64 |
| Switch type | Bidirectional, normally open |
| Relay capacity | 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 should be connected to the RS-485 bus while maintaining correct polarity (A+ and B-). In multipoint systems, devices should be connected in parallel. Ensure that the baud rate on the controller matches the transmitter settings (default available values are 2400, 4800, 9600 bps).
Motozoom lens control
The device generates three 12V DC output voltages with variable polarity. This allows for motor lens movement in both directions:
- Zoom: Zoom in and zoom 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 a 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 external housings (ingress protection depends on the camera housing used).
- Protect electronics from direct 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 RS-485 wire connections (swap A and B for testing). Ensure the address set on the controller matches the address selected in the recorder/keyboard.
Protocol error:
Despite the auto-detection feature, ensure the transmitting device operates in Pelco-D or Pelco-P standard. Check if the baud rate is identical throughout the system.
Lens motor works only in one direction:
Check connections between the controller and the lens. Ensure the current drawn by the motor does not exceed 800mA.