Product Support for: Power Management -> Power Manager with Occupancy and Transponding detection for 4 sub-districts (PM74)

The PM74 OPSW41= C will change the 4 DS1-4 led display, so each DS led now reports the same way the PM42 leds did. This is a Legacy option provided for users who want the PM74 indications to be similar to the PM42. The default OPSW41 =T has the DS led light ON for resistance Occupancy detection within that DS, and will flash when a Transponder is present in that DS. These 2 additional DS detection capabilities and indication were NOT present in the PM42. Whatever the OPSW41 state is, LocoNet messages will report Power state/action,  Occupancy and Transponding messages to a connected LocoNet, ...

PM74 Current Trip settings: The PM74 has the nominal trip current for all 4 channels configured by OPSW7 and OPSW8, in the following order; If OPSW7 is changed to Closed, then Trip current is 3Amps, and OPSW8 is ignored If OPSW8 is changed to Closed , then Trip current is 6Amps. If OPSW7 and 8 are both Thrown (factory reset default) the Trip current is default 4Amps. Note that the DCC channel current is typically time-varying, so the trip current is usually a peak above the average track currents detected. The continuous/combined current on any of the track plug/connectors must ...