Rolls-Royce Helicon X3, Руководство пользователя

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Operating Instructions
Page 20 of 22 Doc. No.: 13S000411
Revision: A
Copyright © 2010 Rolls-Royce plc
The backup system can additionally be turned ON/OFF without any failure in the
system.
The maximum steering angle is limited to +/- 100% and the maximum steering speed is
limited to approx. 1 rpm, about 50% of normal steering speed.
Steering gear alarms can be observed in bridge panels (LCD) and reset from
manoeuvring station.
7.2 Steering (direction) Local Control
Local control is used if both the normal control and the backup control fail to operate the
thruster steering. The thruster steering can be operated locally on the local control
cabinet.
This can be done by means of the Local Control Switch mounted in front of UN10 in
thruster room.
If electrical steering gear with frequency converters are installed:
1.
Select LOCAL on the STEERING LOCAL / REMOTE switch.
2. Press STEERING TURN CW or STEERING TURN CCW to change steering
(direction) angle.
Observe the gyro repeater or direction indicator at UNIT 10, or mechanical indicator and
establish communication with bridge.
The maximum steering angle is limited to +/- 100% and the maximum steering speed is
limited to approx. 1 rpm, about 50% of normal steering speed
Note: Rpm control must be done locally from Frequency Converter Cabinet, ref.
to drive supplier procedures.
7.3 Steering (direction) Emergency Operation, Local
No emergency steering operation is possible because the steering gear can not be
operated manually without a electrical interface/power supply present to the ESU.
Local control will be the lowest operational level and must be considered as the
emergency operation function for the steering gear.
8 Emergency Operation
8.1 Emergency Control/Local Control
If both the normal remote control system and the backup control should fail, it is
possible to operate the propeller pitch locally from the pitch control valve.
The
REMOTE/LOCAL switch on the UN10 Cabinet must be turned to position
LOCAL and the pitch control valve can then be operated manually.