Pan and Tilt Unit 75 kg
Heavy-Duty Two-Axis Positioner for Naval, Ground and Mast-Mounted Defence Surveillance Platforms
The Pan and Tilt Unit 75 kg is a heavy-duty two-axis surveillance positioner designed and supplied by System Controls for antenna, electro-optical and sensor payloads up to 75 kg on tripod, mast and naval platform installations. Delivering closed loop position control with 0.05° accuracy, scanning velocity from 0.1 to 60 deg/sec and three operating modes including position, rate and scanning, the PTU is driven by zero backlash geared BLDC motors with optical angle encoders on each axis.
What is the Pan & Tilt Unit 75 kg?
The Pan and Tilt Unit 75 kg is a precision two-axis positioner delivering accurate dynamic motion in both azimuth and elevation axes for heavy surveillance, antenna and electro-optical payloads. Each axis is driven by a zero backlash geared BLDC motor with an optical angle encoder providing position and velocity feedback to the servo amplifier, achieving 0.05° accuracy with scanning velocities from 0.1 to 60 deg/sec.
| Parameter | Specification |
|---|---|
|
Deployment Time |
< 20 minutes (installation & leveling)
|
|
Assembly Weight
|
< 400 kg
|
|
Payload Weight
|
150 kg
|
|
Rotational Payload
|
< 150 kg (including rotating frame & antenna)
|
|
Rotational Speed |
12 to 30 rpm (programmable) |
|
Platform Leveling Accuracy
|
< 0.5 degrees |
|
Antenna Elevation Angle
|
90° ± 0.1° (fixed angle) |
|
Azimuth Accuracy
|
± 0.1° (with readout accuracy of ± 0.01°) |
|
Mode
|
Operation Mode and Manual Rotation
|
|
Cable Routing
|
Through rotary joint
|
|
Fastener Type
|
Quick operating type
|
|
Online Health Status
|
Available |
|
Power Input
|
230 VAC, 50 Hz, 1 phase, 3 wire
|
|
Power Output
|
28 VDC, 1 kW
|
|
Wind Speed: Operational
|
100 kmph
|
|
Operational Temperature
|
– 20°C to +55°C
|
|
Storage Temperature
|
– 30°C to +70°C |
|
Humidity |
95% at +40°C |
|
Rotary Joint and Slip Ring
|
Available |
Tripod and Mast Platform Compatibility
The PTU is mountable on tripod, mast and stationary hard platforms, providing flexible deployment options across ground-based surveillance posts, vehicle-mounted mast systems and naval vessel installations. A heavy duty tripod is available as an accessory as per customer requirement, with finish options in painting or powder coating to meet specific platform and camouflage requirements.
High Torque BLDC Drive for 75 kg Payload Precision
Each axis is driven by a zero backlash geared brushless DC motor with an optical angle encoder providing position and velocity feedback to the servo amplifier, delivering 0.05° accuracy across a 75 kg top mount payload. The high torque compact assembly provides the structural drive force needed for heavy antenna arrays and multi-sensor electro-optical systems while maintaining the precision demanded by surveillance and tracking operations.Za
Three Operating Modes for Mission Adaptability
Position mode enables precise point-to-point payload positioning for sensor alignment and target designation. Rate mode provides velocity-controlled motion for smooth tracking and surveillance transitions. Scanning mode supports automated area coverage patterns for perimeter monitoring and search operations. All three modes are accessible via RS422/Ethernet interface with PC-based GUI on Windows and Linux, and a hard control panel with joystick for field operation.
Naval Grade Vibration and Shock Qualification
The PTU complies with MIL-STD-167-1 for naval machinery vibration and MIL-STD-901D for naval high-impact shock, confirming its suitability for ship-borne surveillance and weapon system platform installations. Combined with MIL-STD-810G compliance for humidity, fungus and salt spray, it is qualified across the full range of naval and coastal operating environments encountered in Indian defence deployments.
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It is a heavy-duty two-axis positioner for antenna, electro-optical and sensor payloads up to 75 kg on tripod, mast and naval platform installations, with 0.05° accuracy, 0.1 to 60 deg/sec scanning velocity and three operating modes: position, rate and scanning.
Both axes deliver 0.05° accuracy with 0.1° resolution via closed loop position control using zero backlash geared BLDC motors with optical angle encoders on each axis.
Standard azimuth range is ±60° with N x 360° continuous rotation available on request. Elevation range is -15° to +45°. Both axes scan from 0.1 to 60 deg/sec.
Yes. The PTU complies with MIL-STD-167-1 and MIL-STD-901D, which are naval vibration and shock standards, confirming suitability for ship-borne and naval platform deployments alongside ground-based installations.
Three modes: position mode for precise point-to-point positioning, rate mode for velocity-controlled motion and scanning mode for area surveillance. PC-based GUI on Windows and Linux is supplied for controls and monitoring.
Yes. N x 360° continuous rotation is available on request. Reliable slip rings are provided for data link, video link and power supply continuity during continuous rotation.
