Massoth XL light/smoke wiring?

M

Matthew_billy@hotmail.co.

Registered
Country flag
Hi all

just a quick question;

I’ve wired up a Massoth XL in my 2085D Mallet and all is working fine, I just can’t for the life of me understand the instructions as to how I wire in the lights both from/back and also how I wire in the smoke generator?
Any help much appreciated
 
Hi,
All lights use the same 'common' - labelled 22V on the decoder.
The internal light is wired to LI-I
Front lights to LI-V
Rear to LI-H.
It is best to wire the smoke direct to the wheel pick up wires - always on, but that's OK. The decoder outputs are a bit marginal for the power consumption of a smoke unit. (you could use a relay to switch it but that just complicates it all.)
Your loco probably has 24V light bulbs - but check. If the end of the bulb is domed they are 24 V, if they are flattened they are 5V. For 5V you MUST change CV50 to about 6 or 7 or your bulbs will be very bright and quickly burn out.
 
Last edited:
stockers said:
Hi,
All lights use the same 'common' - labelled 22V on the decoder.
The internal light is wired to LI-I
Front lights to LI-V
Rear to LI-H.
It is best to wire the smoke direct to the wheel pick up wires - always on, but that's OK. The decoder outputs are a bit marginal for the power consumption of a smoke unit. (you could use a relay to switch it but that just complicates it all.)
Your loco probably has 24V light bulbs - but check. If the end of the bulb is domed they are 24 V, if they are flattened they are 5V. For 5V you MUST change CV50 to about 6 or 7 or your bulbs will be very bright and quickly burn out.
Click to expand...

thanks for that, that has helped me more than the massoth manual managed to. What I still can’t work out though is what you mean by ‘common’?
The front and rear lights will both have 2 cables running from the lights leaving me 2 wires to attach into the decoder somehow but this is what I am still struggling with?
 
One wire to LI and the other to common. So you end up with one wire from the front, rear and interior all connected to common - that's why it's called 'common'!
 
It works Thanks all for the help! It’s so simple and obvious once you know what your doing.
One last thing, it was mentioned about changing CV50 to dim the lights which I have done, but if I’m wiring a 5V smoke unit to the track connections I presume this will also need some kind of adjustment?
 
Matthew_billy@hotmail.co. said:
It works Thanks all for the help! It’s so simple and obvious once you know what your doing.
One last thing, it was mentioned about changing CV50 to dim the lights which I have done, but if I’m wiring a 5V smoke unit to the track connections I presume this will also need some kind of adjustment?
Click to expand...
Yes,
Connect one side of the smoke unit to the Dec +24V (that 'common' again) and the other side to the function 1 output..

I don't have a manual to hand, but there will be a CV to adjust the voltage divider for functions 1 & 2...
It is common to use the F7 key to turn smoke off/on. - You will find a CV to set which button on the controller switches function 1.

No doubt, someone will have the information to hand?

PhilP
 
With a Massoth decoder, CV53 sets the voltage for A1 (and A2). By default it is 32 full track voltage, for 5v set it to 5 or more, depends on your track voltage. I run at 19v track voltage and I find I need a value of 7 to get decent amount of smoke.
CV54 sets the command for A1. By default it is 1 (F1), to change it to F7 set it to 7.
 
stockers said:
Hi,
All lights use the same 'common' - labelled 22V on the decoder.
The internal light is wired to LI-I
Front lights to LI-V
Rear to LI-H.
It is best to wire the smoke direct to the wheel pick up wires - always on, but that's OK. The decoder outputs are a bit marginal for the power consumption of a smoke unit. (you could use a relay to switch it but that just complicates it all.)
Your loco probably has 24V light bulbs - but check. If the end of the bulb is domed they are 24 V, if they are flattened they are 5V. For 5V you MUST change CV50 to about 6 or 7 or your bulbs will be very bright and quickly burn out.
Click to expand...
 
You must log in or register to reply here.
Back
Top