Wiring To General-Purpose Outputs; Figure 5-10 Wiring The Alarm I/O Connector To An Alarm Relay Connec; Figure 5-11 Eclipse Median Matrix's Double-Pole Double-Throw Alarm Relay - Clear-Com ECLIPSE MEDIAN MATRIX Instruction Manual

Vitec Group Communications
Eclipse Median Instruction Manual
will cause the Eclipse Median to detect an alarm condition. A logic low
or an open circuit will cause the Eclipse Median to detect no alarm
condition.
Pin 1 is a voltage source out of the Eclipse Median matrix. It is
connected through a 10KOhm pull-up resistor to the +5 V supply rail
inside the Eclipse Median matrix.
A contact closure placed across pins 1 and 6 will also cause an alarm
condition. The alarm outputs of the PSU-101 power supply could be
wired directly to these pins allowing the CPU card to report PSU
failures also.
Eclipse
"Alarm I/O" DB-9F
Connector
Figure 5-10: Wiring the Alarm I/O Connector to an Alarm Relay Con-
10
Figure 5-11: Eclipse Median Matrix's Double-Pole Double-Throw Alarm

WIRING TO GENERAL-PURPOSE OUTPUTS

4
The DB-25 connector labeled "GP OUT" connects the matrix to eight
double-pole double-throw (DPDT) relays with contact ratings of 30
VDC at 1A.
Each general-purpose output has a relay inside the Eclipse Median
matrix. When a general-purpose output is inactive, the associated
"common" pin on the GP OUT connector will be shorted to the relevant
"normally closed" pin. When a general-purpose output becomes active,
1
1
6 2
3
2
4
7
3
8
4 Relay Normally Closed
9 Relay Normally Open
5 Relay Wiper/Common
nector
ALARM_COM
2
ALARM_NC
3
4
ALARM_NO
9
8
7
1
RL1
RELAY DPDT
Relay
To Alarm
PSU-101
"Alarm Relay"
To Alarm
Connector
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