Brian,
Depending on your requirement you may need a risk assessment to something
like ISO 12100 or ISO 13849-1. From that would be determined the minimum
performance level of the safety control system. A single contactor could
be used as the VFD manufacturer suggests. For higher performance le
Brian —
Look on the web for Doug Nix. Good guy, knows his stuff.
Mike
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-- Original Message --
From: Brian Kunde
To: EMC-PSTC@LISTSERV.IEEE.ORG
Sent: March 19, 2020 at 12:19 PM
Subject: [PSES] Fwd: Emergency Stop Function
If any of you have a Case of C
I think you need a VFD with Safe Torque Off (STO) function.
Jim Hulbert
From: Brian Kunde [mailto:bkundew...@gmail.com]
Sent: Thursday, March 19, 2020 1:19 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: **External**[PSES] Fwd: Emergency Stop Function
If any of you have a Case of Corrona, I hope it
We have the following product safety/ compliance position currently open in the
Boston, MA area.
Product Safety and Compliance Specialist job in Chelmsford, Massachusetts at
Thermo Fisher Scientific:
https://jobs.thermofisher.com/global/en/job/114265BR/Product-Safety-and-Compliance-Specialist
If any of you have a Case of Corrona, I hope it is the type that comes in
bottles or cans.
First, there is a guy in this group who I chatted with in the past who is
like an expert in the E-Stop function. He has a Blog or Website dedicated
to this topic which I cannot currently find. Can anyone h
Hi all,
in these cases (floating metal parts of EUT) we connect the floating part
to Earth Ground with a 2x 470kohm cable similar (or same) as that used for
VCP/HCP.
See IEC/EN 61000-4-2 sec. 7.2.4 Ungrounded Equipment:
"A cable with 470 kohm bleeder resistors, similar to the one used with the
HC
Note that the worst situation may occur when both planes are equal,
In this PCB, they are more or less equal. It's an 8-layer stack (bottom/
Layer8=GND, Layer7=Signals, Layer6=GND, and .). But the signal traces in
Layer7 have now continuous return path in both L8 and L6.
Regards
Amund
GND1-Signal = 200um
Signal-GND2 = 220um
So there are slightly differences of the distances.
I have found two possible alternatives to change layout so the high speed
lines in Signal layer will have 100% GND return coupling all the way.
They should must have priority when interfering other s
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