Station Transfer - Bosch Rexroth Marex SB Manual

5.3 Station transfer

A command transfer is possible in 2 different modes. Which mode is applicable, depends on the
position of switch 3 on the switch board CTRHEAD (see chapter 4.2 control head – comparision of
range / position). Always, the key on the passive control station must be pushed to change the control
station.
Mode "compare direction"
condition :
passive
station
wrong lever position
condition :
Command lamp flashes slowly
requesting
station
If the lever of the passive control station is placed in a range which is not admissible for command
transfer (the passive lever in astern when the active one is in ahead or neutral or the passive lever in
ahead with the active one in astern or neutral), the buzzer will sound at long intervals and the
command lamps flash at low repetition.
If the lever of the passive control station is in the correct position for a command transfer (the passive
lever in ahead or neutral when the active lever is in ahead or the passive lever in astern or neutral
while the active one is in astern), the buzzer will sound at short intervals and the command lamps
flash at high repetition. By pressing the key again, the command will be taken over.
Mode "compare position"
In the mode "compare position", the position of the passive lever may deviate by 30% maximum from
that of the active control head lever. In addition the range (ahead, neutral, astern) must correspond,
before a command transfer can be carried out. It is not necessary to push the key a second time. The
transfer will be executed as soon as the lever positions are correct.
This gives the operator the possibility, after the first actuation of the key, to move the lever until the
correct range is found and the command transfers automatically. If the correct range is not found
within 30 seconds, the command transfer will be stopped.
According to the classification rules, the given cruising command must not change
during a command transfer. For this reason, classified ships must choose the
!
mode "compare position".
Note for twin engines:
In case of control heads with two levers, both levers must be placed correctly before the command
can be transferred. The function of the command lamp is assigned to the respective lever. The buzzer
will only sound at short intervals if both lever positions are correct.
31
COMMAND
ALARM
SYNCHRO
push key
COMMAND
ALARM
SYNCHRO
slow bleeping
condition :
active
station
correct lever position
Command lamp flashes quickly
COMMAND
ALARM
SYNCHRO
fast bleeping
push key
COMMAND
ALARM
SYNCHRO
Command lamp on permanenly