The LSRU Series is a microcontroller-based family of load sensors. The LSRU family of products employ three basic types of control logic: motor control logic, alarm logic and feed control logic.
Motor Control Logic
Several combinations of functions are available in the LSRU,
including overcurrent and undercurrent or either overcurrent
or undercurrent with variable trip, restart or extended restart
delay settings. These various versions of the LSRU trip on the
respective fault and then automatically reset after the restart
delay expires, in preparation for the next motor start. LSRUs
do not trip on undercurrent when the load turns off, this is
recognized as a normal condition.
Alarm Logic:
The LSRU-AL simply indicates whether the current is between
the setpoints or outside of the setpoints. This product is best
used with a PLC or other controller where status indication
is desired.
Feed Control:
The LSRU-FC is a load monitor intended to control feeder
mechanisms in a variety of applications. It stops the feeder
when the grinder, chipper, saw, auger, etc. nears overload. When
the load is reduced to a preset level, the feeder is restarted.
Features & Benefits:
- LED indicator: Visual indication of relay status
- Built in current sensor: Eliminates the need for a stand alone current transformer and also provides isolation between the monitored and control circuits
- Adjustable current sensing range: Provides ability to precisely set the current trip point for any application
