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FortiGate-5140 chassis
Shelf alarm panel telco alarms
FortiGate-5140-R Chassis Guide
01-30000-87705-20090108
http://docs.fortinet.com/
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Table 4: FortiGate-5140 shelf alarm panel connectors
Connector
Type
Speed
SERIAL 1
RJ-45
9600 bps,
8/N/1
SERIAL 2
RJ-45
9600 bps,
8/N/1
ALARM
micro
N/A
DB-15
male
Figure 5
shows the connections between the primary and secondary shelf managers and
the shelf alarm panel.
Figure 5: Connections between the shelf managers and the shelf alarm panel
5140SAP
Buffer
I²C-Switch
PCA9545
LTC4300
ShMM-500
Secondary Shelf Manager (Lower)
The shelf alarm panel telco alarm interface relay circuits are capable of carrying 60 VDC
or 1 A with a max. rating of 30 VA. The shelf alarm panel accepts timed pulse inputs for
clearing minor and major alarm states. Reset is accomplished by asserting a voltage
differential from 3.3 V to 48 V for between 200 and 300 ms. The acceptance voltage range
is from 0 to 48 VDC continuous (handles up to 60 VDC at a 50% duty cycle). The current
drawn by a reset input does not exceed 12 mA.
The alarm LED reset button activates the alarm cutoff (ACO) state for major, minor, and
user-defined alarms. You cannot reset critical alarms with the alarm LED reset button.
When the ACO state is activated, active alarm LEDs blink and all of the alarm relays are
deactivated. The alarm reset button activates the ACO state but does not clear the alarm
completely.
Protocol
Description
RS-232
Serial connection to the primary shelf manager
serial
command line interface.
RS-232
Serial connection to the secondary shelf
serial
manager command line interface.
Telco
The external dry relay Telco alarm interface
Form-c
(48VDC) provides Telco form-c relay
connections for minor, major and critical power
faults. The cable required to connect to the
alarm interface is not supplied by Fortinet.
SERIAL 1
SERIAL 2
ALARM
Buffer
I²C-Switch
PCA9545
LTC4300
ShMM-500
Primary Shelf Manager (Upper)
FortiGate-5140 shelf alarm panel
11
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