NJI Grade Crossing Flasher Controller external bell unit wiring

[franco330]

Just wired the sub board for my grade crossing with NJ InternationalI lights, arms etc and FlashMaster controller and wondering how to trigger my external bell board - an ITT GL sound module. (I thought I knew, but ho-hum...)

 

The issue I think I have is that the FlashMaster board has two outputs labelled as below. pin 8 and pin 9 labelled BELL+ve and BELL-ve external bell trigger,  (I assume 'going' is a typo for gong) but the ITT sound board has only a simple pusbutton connection (in and out) to trigger the sound. There is a note on the sound board documentation which stresses 'Do not put any voltage in any switch input terminals'.

 

I cannot see from the Flashmaster doc'n whether its pin 8 and pin 9 are just effectively a push button or applies a voltage and I'm reluctant to experiment and blow a board. An afterthought, where do I connect pin 6 GND?  Has anyone used this configuration successfully or can anyone offer a steer please.

 

I have searched RMWeb and I've not been able to find any NJI FAQs or 'owt else on Google.

 

Any help or a steer to somewhere else would be great. Thanks guys. Frank

 

 

 

[franco330]

Problem solved. I contacted george@ittproducts.com and received a response within the hour. The solution is shown in the image below and have posted it here for reference. George couldn't have been more helpful.