Turbovac 150/360 cable diagram?

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Jerry Biehler
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Turbovac 150/360 cable diagram?

Post by Jerry Biehler »

Local university gave me a few Leybold turbos the other week, Got another 50 as well as a 150CSV and a 360. I need cables for between the NT20 drive and the turbos. Does anyone have the wiring diagram? This would have a AMP CPC 14 on one end and a octal socket on the other. Cant find any info online. Trying a contact I have at Leybold but not sure on that one.

-Jerry
Rex Allers
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Re: Turbovac 150/360 cable diagram?

Post by Rex Allers »

Here's some info I saved from 2017. The original (1st part) came from a post by John Futter here somewhere. I didn't save the link but title and date is shown. After John's part, I added some more info from my own measurements. Looking at this now, the info for the controller side pins 5 A & B is confusing. The reversal after the words 'actually' may be my notes from measurement but I don't remember and can't find where I stashed the turbo and cable to check it now.

FWIW, use at your own risk.
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Re: Turbopump maintenance
Postby John Futter » Thu Jun 27, 2013 12:03 am

The TMP360 pump pin out is as follows

standard Octal tube socket
pin 1 =earth
pin 2 = pump select (the 360 has a different resistance compared to the 150 so the controller knows which pump is connected)
pin 3 = thermal switch
pin 4 = not connected
pin 5 = not connected
pin 6 = Phase A in
pin 7 = Phase B in
pin 8 = Phase C in

connections on the controller

phase A goes to 1A and 1B
phase b goes to 2A and 2B
phase C goes to 3A and 3B
Earth goes to 4a and 4B
Thermal switch goes to 5A actually 5b
Pump select goes to 5B actually 5A

John Futter

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Rex notes sep 15, 17

Possibly not quite right
From Turbovac 150CSV measurements...

A, B, C = approx .5 ohm DC between any -- nothing to other pins (delta conn)

1 is connected to case; don't see anything to other pins

2 seems open on 150CSV (re gnd)

2-3 is shorted at ambient

Looking at Turbotronic driver box...

Output connector has separate pins for each phase + and -
The A pin pulls negative through 2N6284 Darlingtons
the B pin pulls positive through 2N6287 Darlingtons

For each phase the cable ties A & B pins together for each phase
Phase A = 1A + 1B, phase B = 2A/B, phase C = 3A/B

Negative drive is ground.
Supply's AC from power transformer is 60 Vac.
Seems drive DC may be regulated down lower. Measured about 30V with supply just turned on.
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and here is a crude diagram I made while doing some tracing in the controller...
Drive connections.png
Rex Allers
Jerry Biehler
Posts: 975
Joined: Tue Nov 24, 2009 3:08 am
Real name:
Location: Beaverton, OR

Re: Turbovac 150/360 cable diagram?

Post by Jerry Biehler »

Well, that's half of what I need. This has a circular connector on the other end like this.

https://www.ebay.com/itm/333940096912?m ... =1&mkcid=1
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