Vintage NISHIJIN Circuit Racer with modern electronics overlaid
This was an unusual project. After purchasing a NISHIJIN “Circuit Racer” and discovering that the electromechanical drum motor was broken. The CLICK PLC was overlaid to replace the original circuitry.
In the pictures: bulb 3 is burnt out for now… difficult to tell but there is a piece of clear plastic over the terminal bars to protect from shock… there is a separate .315A fuse between the 24V DC PLC power supply and the load (servo and lights) and a .5A fuse for the main power feed. The PLC power supply also powers the conventional empty reward tray and jackpot light (30V bulbs). There are three terminal bars ( one ground / common, one PLC power and inputs, and one load power)
PLC programming is a challenge. ‘nuf said…
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