These are step drills or unibits:
http://www.tradetufftools.com/index.php?main_page=index&cPath=217_336&gclid=CN6pwdaW448CFRGCGgod6lUzCQ
Great for non critical sized panel work, best used in a drill press w/ depth setting as to be safe.
Greenlee punch set for consistant results for standard...
Another reason to use 4-20 ma is for explosion proof applications, with fusing and voltage limiting as to stay below max VA power limits for group and division clasification. Source series fused at say .05 A and followed by a Transorb AC clamp diode, intrinzic safty block.
Dennis McHenney...
OPC program (Ole for Process Control)
http://www.google.com/search?hl=en&rlz=1T4TSHB_enUS248US248&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=OPC+linux&spell=1
Dennis McHenney
mchenney@mindspring.com
1) Each atom trys to keep the same number of electrons circling it's nuculus, staying in balance with other surrounding atoms. But the actual number is dynamic.
2) An outer ring FREE electron flys out of orbit in one atom and FLOWs to another atom that attracts and captures it into orbit. A...
CIMplicity HMI -to multi GE VersaMax MICRO on two RS-485 multidrops
Anyone done this before and have any insight and pitfalls to pass along! I have worked with both, but never over RS-485 (single & multi server - resource Ethernet TCP/IP and single RS-232 I have done).
I have dual port Quatech...
SPARE AB PLC-2/20 PARTS
2 complete operational double rack systems removed from PLC upgrade and a 1770-TA programming terminal
ITEM (CAT NO / PN ) Quantity
POWER SUPPLY, CPU and RAM MOD
1772-LP2 ser A
1772-MEB 2
16 Slot Rack P/N...
I did not say FOR SALE here! Have tried that with no response. May give to someone in need, if they cover the shipping and handling. I may try ebay before I do that though, now that you mentioned it.
Dennis McHenney
mchenney@mindspring.com
<dmchenney@merkle-korff.com>...
SPARE AB PLC-2/20 PARTS
2 complete operational double rack systems removed from PLC upgrade and a 1770-TA programming terminalITEM (CAT NO / PN )QuantityPOWER SUPPLY, CPU and RAM MOD
1772-LP2 ser A
1772-MEB216 Slot Rack P/N 635226-0128 Slot Rack P/N 635224-012PLC-2 I/O Adapters...
If good enough for your needs, use Krylon Clear Acrilic spay from your local HW store. Multi coats.
Dennis McHenney
mchenney@mindspring.com
<dmchenney@merkle-korff.com>
<mchenney@mindspring.com>
For a GE VersaMax micro the first 8 HS inputs are configured as an A-Quad-B quadature input with A, B and HOME signals being applied. Examples are in the HW and VersaPro SW manuals. You get:
Angular POSITION (EXAMPLE, for 360 line encoder = 1 / 1440 per revolution, 1/4 deg)
Direction of...
EE needs NOISE test help
I am looking for a low cost off the shelf equipment to do production NOISE testing of small motors and gearmotors as part of an EOL functional one output shaft revolution test. The output would feed a GO-NO GO result to PLC input(s) or via PLC serial port. After 2.5 to...
