Figure 11 - Power Status Module (Psm) - Honeywell HC900 User And Installation Manual

Power Status Module (PSM)
The Power Status Module (PSM) (Figure 11) sits between redundant power supplies on the
I/O rack (see page26). It is a status module for both power supplies and indicates which are
in use, PS-1 (left) or PS-2 (right) or both (typical).
When the status indicator for either or both of the power supplies is lit, it is reporting that the
status of the associated power supply is good and that the outputs are within specified
limits. When the status is off, either the power supply is off or the voltages are out of
tolerance.
Figure 11 – Power Status Module (PSM)
28 HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017