About the Product

The BLOCKsignalling PPI5 is a Points Position Indicator designed to monitor the switching voltage applied to points motors and display their last operated position using coloured LEDs. It provides a clear and reliable visual indication of route settings on control panels and mimic boards without interfering with normal operation.

When a set of points is operated, the module detects the brief positive voltage applied to the motor coil and updates the corresponding LED output. The selected route remains displayed until the points are switched again, with all states automatically stored in memory.

The PPI5 supports monitoring of up to eight sets of points and includes built-in diagnostic LEDs to assist with setup and troubleshooting. LED brightness is controlled by the onboard microprocessor, removing the need for external resistors and simplifying installation.

Key Features

• Monitors the brief positive switching voltage across points motors to detect operation.
  
• Displays the last operated position using LEDs on a control panel or mimic.
  
• Supports up to 8 sets of points using 16 input channels.
  
• No resistors required for standard LED connections, simplifying wiring.
  
• Adjustable LED brightness controlled by the onboard microprocessor.
  
• Automatically saves all states to memory when power is removed.
  
• Built-in diagnostic LEDs for input and memory status indication.
  
• Opto-isolated inputs accept voltages from +5V to +60V.

Electrical Specifications

• 12V DC regulated power supply required.
  
• Typical current consumption: approximately 0.25A.
  
• Recommended supply rating: 0.5A to 1A.

System Wiring with DCC Accessory Decoder

System Wiring with Points Switches & CDU