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TABLE A - JP1 STRAP OPTIONS
JP1 strapped 1 & 2
♦Single Input
Connecting one power supply to pins 35 and/or 36 or 31
and/or 32 supplies power to both fuse groups.
♦Redundant Inputs
Connecting one power supply to pins 35 and/or 36 and a sec-
ond power supply to pins 31 and/or 32 parallels both supplies
to provide power to both fuse groups.
JP1 strapped 2 & 3
♦2 independent supplies
Connecting one power supply to pins 35 and/or 36 provides
power to fuse group 1 (fuses 1 through 6). Connecting a sec-
ond power supply to pins 31 and/or 32 provides power to fuse
group 2 (fuses 7 through 13).
CURRENT RATING
Each edge connector pin (35, 36, 31, and 32) is rated at 5 amps,
maximum. If the equipment powered by each fuse group draws
less than 5 amps, only one pin of each group is needed. Refer to
Fig. 1. Use both inputs to each group if:
♦The current draw for each group exceeds 5 amps.
♦A single input is used to provide power to both fuse groups.
FAILURE ALARM CIRCUIT
The failure alarm circuit consists of a regulator transistor, relay
K1, and an LED. The regulator transistor compensates for the
battery voltage and prevents exceeding the voltage rating of the
relay coil. The relay is normally activated. It is non-active only
when the supply battery is lost or one of the fuses fails. When a
fuse fails, negative battery is placed on both sides of the relay
coil, no current flows through the coil, and the relay contacts
return to normal. At the same time, current is provided to the
front panel LED, lighting it.
CIRCUIT DESCRIPTION
DESCRIPTION
Redundant or Single Input
Two Independent Inputs
POSITION
Pins 1 & 2
Pins 2 & 3
