User's Manual Part 4
T
ECHNICAL
D
OCUMENTATION
P
ROTECTING
P
EOPLE AND
A
SSETS
®
D
ATE
:
27
M
ARCH
2017
|
V
ERSION
:
1.8
78
R
ANGER
®
-
X5
R
ADAR
S
YSTEM
(M
OBILE
)
F
UNCTIONAL
O
VERVIEW AND
T
HEORY OF
O
PERATION
EEC
®
|
C
OMPANY
P
ROPRIETARY
4.3. Interlock Circuitry
Use of Interlocks in the Ranger-X5 ensure safe operation of the radar. Should conditions
threatening the safety of personnel or equipment exist, they will inhibit some or all radar
operations. These interlocks are implemented using mechanical and electrical devices. The
interlocks fall into the following categories:
• Emergency Stop Circuitry - removes primary power from the system at the Power
Control & Distribution Assembly.
• Transmitter/Radiate inhibit - disables the ability of the Solid-State Power Amplifiers to
transmit by removing the radiate command line to the Transceiver Assembly.
• Antenna movement inhibit - disables movement of the Antenna in either or both axes by
removing power to the servo amplifiers and holding the controller in a reset condition.
• Antenna Power off - RCU commanded interlock to remove primary power to the
Pedestal using PED POWER RESET command.
4.3.1. Hardware Interlocks
Use of hardware interlocks in the Ranger-X5 electromechanically interrupt equipment operation
to protect personnel from exposed operating equipment, remove unsafe conditions, ensure safe
operations, or protect equipment from damage. These critical hardware interlocks place the radar
in a SAFE mode that could include disabling RF transmission, Antenna movement, or both RF
transmission and Antenna movement.
Any time the radar is put into operate mode when any axis was previously disabled and servo power is
commanded on, the Antenna homing sequence will be initiated.
The hardware interlocks that place the radar in SAFE mode include:
• Main Circuit Breaker (MAINS) - located on the TX Control and Indicator Panel - disables
the entire system by removing power.
• AZ Safe Switch - located on the Pedestal Enclosure Plate Assembly - disables azimuth
axis Antenna movement
• EL Safe Switch - located on the Pedestal Enclosure Plate Assembly - disables elevation
axis Antenna movement