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Old April 7th, 2006, 03:14 AM   #6
Steve Kemp

Steve Kemp is offline
Join Date: Nov 2003
Posts: 122
Mr. Mode, you're right. We're using the SL-C range of light guards by Keyence. Both o/p types are present at the receiver connector, making it universal. Buying the appropriate cable (n or p type) connects the same colour cores to the npn or pnp ossd's -neat.

...And, reading the Standards and Regulations section in the SL-C glossy, I note that this model -even when used in conjuction with the dedicated controller- has not received certification in accordance with Article 44-2 of the Japanese H & S Law, pertaining to its use with presses and shearing machines. I find this a curious irony, given that our customer imports almost all of its test/assy equipment from Japan (CE marked), using light guards to inhibit a minimum of outputs -in one case, just the downstroke of a pressing cylinder- via the (non-safety) plc. There are no pneumatic dump valves, no isolator taps, and gaps in the "guarding" through which various limbs or small humanoids can easily pass. Funny ole world.
For the Present is the point at which Time touches Eternity. C.S. Lewis.

Last edited by Steve Kemp; April 7th, 2006 at 03:28 AM.
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