We are a machine OEM and sometimes need to meet various IEC haz. area requirements for the equipment's final location.
Recent discussions revolved around competency certification for designers and shop installations.
Are there new requirements for certifying personnel who select and design...
Thanks for your input.
My concern is more with the RTD's being nestled in with the high voltage windings of the motor. Worst case, a failure could put high voltage on the RTD leads.
These lead back to the IS wiring in the control enclosure for other instruments.
IS installation required 2" air...
We have a customer requiring IS barriers for machine instrumentation in a haz area. Most instruments are fine but we are discussing embedded RTD's in a large (1000HP), haz rated, induction motor.
Is it not true IS barriers require physical distances from non-IS devices when wired? This certainly...
Hi,
I have a redundant CPU ControLogix with single 13 slot i/o rack and PanelView on controlnet. Redundant supplies, etc. but pretty much works out of the box.
Problem: I need dual Modbus RTU comms out of this system. Customer wants 'redundant' Modbus to his DCS.
My original attempt was...
Greetings,
I have a job using a large (2000Hp med Vac)motor which is
rated Ex-n, hazardous area, zone 2, etc. I need to add a
current transformer to a single motor lead (300:5) for controlling a process. The c.t. is wired to a transducer in a safe area.
I am having trouble locating a Ex-n...
