IRIS P520, Руководство по применению

Страница: 11 / 45

IRIS MODEL P520 APPLICATION MANUAL
Page 11
A runaway UV tube or any component failure, in-
cluding the shutter, will cause a lockout condition that
will de-energize the flame relay. The LOCKOUT light
on the P520 will indicate this condition, requiring a
reset to return to normal flame monitoring mode. A
reset can be achieved only if the lockout condition
has been corrected, and can be performed from the
front panel (by pressing the RESET button), or re-
motely through the serial communication.
REMOTE I/O MODULE
An input/output (I/O) module is available for imple-
menting the basic functions described in the previ-
ous section. It will also help facilitate the field wir-
ing in applications where it is impractical to wire to
the rear PCB of the P520.
For example: in a standard NEMA 12
wall-mounted or free standing enclosure,
a card frame cannot be mounted unless
rack-mounting rails or rack-mounting
angles are installed. In this instance,
where there is only one relay panel, the
standard card frame can be reversed and
mounted directly to the panel.
FIGURE 6 - REMOTE I/O MODULE