Fuses - Rectifier RT9- 24V Installation, Operation And Technical Manual

Installation, Operation and Technical Manual
4.4.3.4 Load Current Transducer Input
A load current transducer is connected to X76 of the MUIB2 via a connector using the pin
connections shown below.
Figure 4.11 Load transducer pin connection for MUIB2
4.4.3.5 Power Input
Power to a MCSU-4 is connected to this MUIB2 via connector X50. Pin designations are
also labelled on the PCB as well. Both the bus and battery voltages are connected to the
MCSU-4 via this connector. The MCSU-4 takes power from either the battery or bus
depending on which voltage is higher. The system voltage is read by the MCSU-4 via the
bus terminations of this connector.
4.4.3.6 CB Trip, Batt Sw and LVDS Aux inputs
CB Trip (X22) is used to sense the CB status. Batt Sw (X23) is used to sense status of
battery switch. LVDS Aux (X64) is used to sense the status of the LVDS switch. Open
contacts on any of these 3 input creates an alarm condition on the MCSU-4, therefore,
when any of these 3 inputs are not used, a shorting plug should be installed on those not
in use.
4.4.3.7 Spare Digital and Analog Inputs
There are 4 spare digital inputs (USER 1, 2, 3, 4) available on the MUIB for the monitoring
of external plant associated with the power supply. The inputs must be isolated relay
contacts or auxiliary contacts, which are either normally open or normally closed.
There is also provision for monitoring two external analog levels via connectors X28 (AN1)
and X31 (AN2) on the MUIB. The analog signals must be in the range 0 to +5VDC and
can only be monitored if the single phase AC monitoring module is not connected. This is
because the MMIB1 and the spare analog input share the same input lines to the
MiniCSU.
To use the spare analog or digital inputs the software for the MiniCSU must be individually
programmed by the manufacturer according to the requirements of the application.

4.4.4 Fuses

For fuse functions, type and rating please refer to the table at the end of MUIB section.
158-1872-01 18
Rectifier Technologies
19-Feb-14