Enough
connected
gensets
No
Yes
Start next
available genset
De-load & open
emergency
genset breaker
Breaker
opened
No
Yes
Stop
emergency
genset
Harbour
operation
deactivated
Alarm
Harbour
operation
stopped
1. Harbour operation deactivated: After the Harbour operation digital input is
deactivated (or the Reject harbour operation digital input is activated), then the
controller checks whether the connected gensets can take the load.
• If the connected gensets cannot take the entire load, the next available genset
is started.
2. De-load & open emergency genset breaker: When the connected gensets can
take the load, the controller de-loads and opens the generator breaker for the
emergency genset.
3. Stop emergency genset: Once the breaker is open, the controller stops the
emergency genset, and harbour operation stops.
9.8.3 Parallel timers
In some cases there may be a restriction on the time that the emergency genset is allowed to run in parallel with other power
sources. This might be because the emergency genset requires a short paralleling time. The parallel timer allows the operator to
define very short paralleling times between the gensets on the ship and the emergency genset, for a smooth transition from an
emergency genset supply to on-ship electricity generation by the gensets.
Parallel timers can be configured under Parameters > Local power management > Parallel timers.
INFO
Configure the parallel timer on the GENSET controller to define a short paralleling time for a smooth transition from on-ship
electricity generation by the gensets to an emergency genset supply.
More information
See EMERGENCY genset controller, EMERGENCY genset controller protections, EMERGENCY-main busbar
maximum parallel time for more information.
9.8.4 Temperature-dependent power derating
More information
See GENSET controller, Other GENSET controller functions, Temperature-dependent power derating for a
description of this function.
9.8.5 Priming
More information
See GENSET controller, Other GENSET controller functions, Priming for a description of this function.
DESIGNER'S HANDBOOK 4189340911K UK Page 345 of 521
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