Honeywell HC900 - Figure 11 - Power Status Module (PSM)

Components and Architecture - Hardware Components
22 HC900 Process Controller Installation and User Guide Revision 19
06/14
Power Status Module (C75)
The Power Status Module (PSM) (Figure 11) sits between redundant power
supplies on the I/O rack (see page20). 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)