Protection and control revissited

[Rod]

We're just getting started and this was an idea that came to me, never said it was possible or practical, but sounded good as I thought about it. I can wire your house, but can't build a PLC. ~ Rod

[adhall]

Rod,

I'm just the opposite of you--I can build (and program) the PLC but I can't wire your house... Maybe we can help eachother somehow.

Best regards,
Andy Hall

[Doug]

Its not that hard to wire a house, just follow the residential code simplified. Not that hard to wire a PLC, just follow the directions and buy a simple to use unit like the Siemens LOGO series.

The real hard part is commiting the time, and finding the parts you need.

One LOGO ( my choice for guys like you because they are programed from the units own key pad in Boolean logic )
Two current sensors along the lines of the Airotronics but scavange what you can.

Time...... ( where you can find it )

Here's soemthing and it comes with some sort of pneumatics probably for a Marcel gate or something. Price is high....
http://cgi.ebay.com/Siemens-LOGO-w-Numatics-6ED1-052-1FB00-0BA2-enclosure_W0QQitemZ220063558306QQihZ012QQcategoryZ97184QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Lots of crap here, only thing this package can't be programed to do is tap dance and fart.
http://cgi.ebay.com/23-SIEMENS-MISC-LOGO-UNITS-AND-EXPANSION-MODULES_W0QQitemZ280061090593QQihZ018QQcategoryZ97184QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

This has potential...
http://cgi.ebay.com/Functional-Devices-Inc-RIB-Current-Switch-Sensor_W0QQitemZ140067827605QQihZ004QQcategoryZ67003QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

This is no good!
I have no idea what it was intended for but look closely its a hall effect "thing-a-ma-bob". Sences DC only
http://cgi.ebay.com/AAC-913B-35-Isolated-DC-Current-Sensor-35A_W0QQitemZ290063868067QQihZ019QQcategoryZ25417QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Price is right on for this but this unit is no good, it has no LCD display to see what your programing or key pad to input programs
http://cgi.ebay.com/Siemens-LOGO-power-supply-24V-1-3A-Never-used_W0QQitemZ300063024387QQihZ020QQcategoryZ11772QQssPageNameZWDVWQQrdZ1QQcmdZViewItem


Hope this helps

Doug

[trigzy]

Hi,
    Before you ask - no I'm not dead, and no myPowerLine 25/2 hasn't moved

I made some phone calls and sent some emails regarding some nice panel meters that I've been shipped on some generators that I have bought.  This time I have contacted the mfgr of the meters directly (China), and I'll se what I can dig up.  Heres what I'm considering ordering so far:

(All would include required shunts or CT's)

DCV 0-20, 0-40 (To accomdate 12 & 24V systems)
DCA 0-20, 0-50, 0-100, 0-200, 0-300
ACV 0-150, 0-300 (For 120, 240V systems)
HZ   55-65Hz model


Any other suggestions, requests?


Steve

[Doug]

Dead on the Money Steve...

For those interestsed, I think this might be lowest cost metering option. Steve and I discussed this off list a while back, and I think its worth waiting to see what He can get for prices before you spend big money.

Doug

[xyzer]

AC amps??...110v  each side?

[mobile_bob]

dc amps 0-600 please

bob g

[buickanddeere]

  It's almost worth purchasing a brand new Generac Guardian uniit with the E series automatic hydro service grey transfer switch. It's cheaper than purchasing a generato, a transfer switch and controller individually.

[trigzy]

xyzer;

      I'm not sure how I missed that on the list

ACA 30, 50, 100, 200, 300

DCA in 600 would be in low qtys, but I dont see a problem.

These are all square panel meters with the Zero adjust screw.  ACA meters have current transformers that you just run your wire through, high DCA meters have a shunt that will reuire you to break the circuit to install.


Steve



Steve

[Doug]

Steve:

It may be better to order some switches for the amp and volt meters. This way the guys can swtich between CTs and save a few bucks on metering.

Doug

[SCOTT]

Steve
I am also in touch with a meter manufacturer in China, who is willing to send me samples.  Contact me off line if you want to compare notes.

Best regards
Scott
scottlisters@hotmail.com

[mobile_bob]

i don't know if you want to add these to the list or not,,
but having a panel with all matching meters has some appeal to me

oil pressure 0-100, or at least 0-80 psi
water temp  100-240 or 260 F
plain temp  100- 220 or so,
fuel level E , 1/4, 1/2, 3/4 F or something similar
all with sensors of course

vacuum gage 0-30 inches
plain pressure gage, 0-30 psi, 0-100psi, 0-200 psi

if priced fairly reasonable i can see placeing a sizeable order with whoever wants to market them

i am planning on a rather comprehensive system, and a very large control panel, having matching of similar meters would
sure make for a sweet look.

i would be all over that

bob g

[Guy_Incognito]

Tried murphy switchgauges bob? Added advantage is that trip points can be set.

See : http://www.fwmurphy.co.uk/products/electric_gauge/electric_eg.htm

You can also get pure mechanical ones as well which could be useful.

http://www.fwmurphy.co.uk/products/pressure_vacuum/pres_20p_25p.htm

A little pricey, but very, very reliable.

[mobile_bob]

yes i am very familiiar with murphy gages
have use them for years.
i don't have a need for them for my aniticapated needs

but thank you just the same for the links

bob g

[Guy_Incognito]

Just checking  - one never knows if someone's never seen them before. I showed a mechanic a set of murphy gauges that I was about to install in a loader one day and he was absolutely fascinated, had never seen them before. Don't know how he'd ever managed to miss them...

The newer electric series gauges are not a bad style - plenty of chrome and bling, the switch contacts are behind the gauge face and are hall effect so the needle can go beyond the switch point now, discreet red backlighting.  Of course, how long they'll last compared to the old-school switchgauges is debateable.