C
HEETAH
S
ERIES
S
WITCHERS
–
C
HAPTER
11
81-9059-0570-0
Rev. C
Proprietary Information of
PESA
S
WITCHING
S
YSTEMS
,
I
NC
.
170
11.9.7
Frame Alarm Connector
This three-pin connector, illustrated in Figure 84, provides an interface for an external, customer-
supplied frame control alarm. The Matrix Frame Controller determines when a frame alarm condition
is declared. Alarm contact location is illustrated in Figure 84. This circuit acts as a switch to trigger
an optional external alarm in the event of a controller fault or failure. The controller alarm circuit
supplies an electronic contact closure, but does not provide a voltage to the external alarm. The
customer-supplied external alarm circuit is connected with a cable constructed as shown in Figure 85
(next page).
The Customer-supplied power input to this connector must not exceed
12VDC and the associated amperage must not exceed 10mA.
ALARM
SYSTEM CONTROL
ALARM
RCP PANEL PORT
4
3
2
1
NETWORK
OUTPUT MONI TOR
SLOT B
3
SLOT A
REFERENCE
1
1
2
4
2
FRAME
CONTROL
SYSTEM
CONTROL
3
4
PRC LOOP
COM 4
COM 3 / PRC
COM 1
COM 2
AUX FRAME CTRL
FRAME
ALARM
FRAME
ALARM
FIGURE 84: Frame Alarm Connector
The alarm is activated if any of the following matrix frame controller conditions exist:
•
Finds a card (input, output, matrix, output monitor, power supply, or matrix frame controller)
with a temperature out of range (above 114 ºF)
•
Finds a fan’s voltage out of range
•
Finds a power supply’s voltage or current out of range
The voltage or current must be out of range for three consecutive times before the Matrix Frame
Controller will indicate an alarm.
+ - S
1 2 3
Summary of Contents for Cheetah 1024x256
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