BLOCKSignalling PP14-DC Points Position Indicator at AJMRailways.com

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"Designed and manufactured in the UK using lead-free solder and renewable energy." Amanda		BLOCKSignalling PP14-DC Points Position Indicator Ref: PPI4-DC in stock. $48.00 Shipping per unit: $3.00 Quantity: Product Details: BLOCKSignalling PP14-DC Points Position Indicator The Points Position Indicator (PPI) monitors the brief switching voltage to either of the two coils of a points motor, and displays the last operation using coloured leds that can be mounted on a route mimic. Monitors the brief positive operating voltage across points motors when they are switched Lights a corresponding led on a control panel to show the last operation of each set of points Saves all settings automatically to memory when the power is switched off Monitors up to 8 sets of points Adjustable led brightness No resistors are required simplifying wiring Opto-isolated inputs accept voltages from +5V to +25V Requires a 12V DC Power Supply Connecting the Unit Simply connect one of the PPI input terminals to one end of one of the point’s motor coil, the other input to the end of the other coil, and the common of the coils to the COM GND input to the PPI. Only one connection from a coil common to the COM GND terminal of the PPI is required. This allows the coil voltages to be recognised by the PPI correctly against this reference. Each time the points are operated the yellow led on the pcb will briefly light. Most of the time this led will be extinguished. When using solenoid points motors, a CDU must be used to prevent damage to the PPI. Also, never connect to points directly powered by an AC power supply as this will also damage the PPI. Full and detailed instructions etc are supplied with the unit but even more detailed instructions and diagrams are available from the manufacturer website Each Unit comes with full fitting instructions but to view these before purchasing please copy and paste the link below to your Internet Browser: https://blocksignalling.co.uk/pdfs/50LF1L.pdf

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BLOCKSignalling PP14-DC Points Position Indicator

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