FortiGate-5140B shelf alarm module
FortiGate-5140B chassis
FortiGate-5140B Chassis Guide
18
01-500-156415-20151104
shows the connections between the primary and secondary shelf managers and
the shelf alarm panel.
Figure 5: Ethernet connections between shelf managers and the base backplane
interfaces
Shelf alarm panel telco alarms
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.
Figure 6: The telco alarm connector (DB-15 male)
Eth port0
Eth port1
Eth port0
Eth port1
ShMC port1
ShMC port2
ShMC port1
ShMC port2
Base Hub A
ShMC
IPMC
IPMC
IPMC
IPMC
ShMC
Shelf
Manager
(active)
Shelf
Manager
(backup)
Base Hub B
ATCA board
Redundant IPMB-0 on Backplane
ATCA board
