Hy, we have a Honeywell DCS TotalPlant
Alcont, to which we added a new digital output module BOU. On this module there
is a Disconnect or D switch which sets all the channels on the card
into a passive state. We put this switch to Connect position, but no outputs
are enabled.
Has
anyone seen this before? How can we solve this problem?
In
the Honeywell manuals it is mentioned: For
card replacement the outputs are reliably switched off by turning the front
panel DISCONNECT lever to the right. This must be done both to the old and the
new card. The lever must not be operated during normal operation, because an erroneous
control would be caused by clearing all the output channels.
Thank
you