PMDX Forum
General Category => Parallel Port breakout boards, motherboards, and dedicated accessories => Topic started by: CNC Noob on February 03, 2015, 03:33:17 PM
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Hello,
My machine has 9v inductive sensors for homes on all axis.
They are 2 wire sensors that are in a state of 9v @ 1 mA
with no metal present or 9v @ 3 mA with metal present.
Will these work directly on the PMDX-126 ?
If not, is there a board I can buy to make them work?
Sensors look to be actually 8.2v
Namur SI8-N1 (datasheet attached)
Thanks,
Noob
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Hello Noob,
The SI8-N1 sensor requires an external amplifier for proper operation.
Quoted from their web site:
SENSOR VERSION N IN ACCORDANCE WITH
NAMUR STANDARDS - DIN 19234 (2 wire)
These are two-wire non amplified D.C. sensors
which contain only the oscillator and are adapted
to control an electronic amplified thereshold
circuit.
The input circuits on PMDX boards are not designed
to work with this style of sensor and we do not offer
a board with the kind of signal conditioning required.
We recommend using 3 wire sensors.
Regards,
Steve Stallings
PMDX