CTI Products DC Distribution Panel - Manual (Page 4)

CTI Products, Inc. DC Distribution Panel User Guide
I
NTRODUCTION
The DC Distribution Panel is an accessory to the MCN Monitoring and Control Network product family. It
provides distribution and monitoring for dual redundant power supplies for cases where a power supply failure
cannot be tolerated. The DC Distribution Panel has independently fused inputs for two power supplies, and 20
independently fused outputs. Each input and output fuse is monitored via Green/Red (OK/Fail) LEDs to aid in
correcting a power supply problem. In addition, an audible alert is available to indicate any failure.
The DC Distribution Panel mounts in an EIA 19” rack and is 2 rack units (3.5”) high. Two (redundant) supplies
also mount in a single EIA 19” rack and is also 2 rack units high.
Part Number
Description
S2-61160 DC Distribution Panel
81-11812 Power Supply
Figure 1 shows the front view of the DC Distribution Panel.
Figure 1 DC Distribution Panel Front View
C IRCUIT D ESCRIPTION
The outputs from redundant power supplies are independently connected to inputs on the DC
Distribution Panel. Each supply input is separately fused with an automotive style fuse, and has
an “OK” and “FAIL” LED indicator. When the input supply is present (and the input fuse is
intact), the corresponding green “OK” LED is lit. If either input supply is not present, or the fuse
is blown, the green “OK” LED for that input is turned off, and the red “FAIL” LED is lit. In
addition, an on-board buzzer sounds when either supply input is not present, or if any of the input
(???, ??? or output (??? – ???) fuses are blown. The buzzer may be disabled by setting the front
panel switch to the ??? “OFF” position.
The DC Distribution Panel passes the supply current from the input supplies to 20 outputs. Each
supply output is separately fused, and has an “OK” and “FAIL” LED indicator. When the output
supply is present (and the output fuse is intact), the corresponding green “OK” LED is lit. If an
output supply is not present, or the fuse is blown, the green “OK” LED for that output is turned
off, and the red “FAIL” LED is lit. ???
Fuses
Table 1 lists field replaceable fuses for the DC Distribution Panel.
Fuse
Designation
CTI
Part Number
Description
F1, F2, F3, F4 65-11820 Fuse 1A 60V Fast Blow GMT Indicating
Index 4