192
442704/A
Related topics
Maintenance procedures, page 186
Lowering and hoisting the transducer from the sonar room, page 187
Emergency lowering and hoisting using the two contactors
In case of emergency it is possible to bypass the control logic in the Motor Control Unit.
You can control the hoisting motor directly using the two designated contactors.
Prerequisites
You need a suitable screwdriver
or a large coin to open the Motor
Control Unit cabinet. You also
need a small screwdriver. 3-phase
voltage for the hoisting motor is
available.
Context
The two contactors are identified
as K301 and K302. The
Hoisting
Contactor
(K301) and the
Lowering
Contactor
(K302) are located on
the upper DIN rail in the Motor
Control Unit.
•
Left side
: When activated, the
Hoisting Contactor
(K301) starts
the motor in order to hoist the
transducer.
•
Right side
: The
Lowering
Contactor
(K302) starts the
motor to lower the transducer.
WARNING
This operation overrides the upper and lower limit switches. The contactors must be
released before the transducer reaches upper or lower position. Failure to do so may
result in serious mechanical damage to the hull unit.
Simrad ST90 Reference Manual
Содержание Simrad ST90
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