Marine Installation Manual
2021-08
5-11
5 Engine Automation
5.5 Alarm and monitoring system
X72DF
5.5
Alarm and monitoring system
To monitor common rail system-specific circuits of the engine, sensors with
hardwired connections are fitted. In addition to that, the engine control system
provides alarm values and analogue indications via data bus connection to the
ship’s alarm and monitoring system.
5.5.1
Integrated solution
PCS and AMS
from same supplier
•
The PCS and AMS are connected to the ECS through one redundant bus
line (CANopen or Modbus, depending on automation maker).
•
The integrated solution allows an extended presentation of relevant param
-
eters and easy access to alterable user parameters backed by the graphical
user interface functions available in the AMS.
•
With the AutoChief 600 Alarm and Monitoring System by Kongsberg Mar
-
itime even the conventional sensors and additional Flex system-specific
sensors can be connected via data bus lines, and the data acquisition units
can be mounted on the engine in the same boxes used as terminal boxes for
any other AMS. These boxes are usually provided by the shipyard and have
to be delivered to the engine builder for mounting on the engine and con
-
necting to the sensors.
•
The integrated solution facilitates commissioning and testing of the alarm
signals set on the engine maker’s testbed and limits the wiring at the ship
-
yard to a few power cables and bus communication.
5.5.2
Split solution
PCS and AMS
from different suppliers
•
The PCS is connected to the ECS through two redundant bus lines (CAN
-
open or Modbus, depending on automation maker).
•
For the separate AMS an additional redundant Modbus connection is avail
-
able.
Requirements for any AMS to be fulfilled in a split solution:
º
Possibility to read values from a redundant Modbus line according to
standard Modbus RTU protocol
º
Ability to display analogue Flex system values (typically 20 values) and
add alarm values provided by the ECS to the standard alarm list (300-
800 alarms depending on engine type and number of cylinders)
With this solution the HMI is split as well:
•
The remote control system includes the following functions:
º
Changing of parameters accessible to the operator
º
Displaying the parameters relevant for engine operation
•
The alarm and monitoring system includes the display of:
º
Flex system parameters such as fuel pressure, servo oil pressure, etc.
º
Flex system alarms provided by the ECS
•
WinGD provides Modbus lists specifying the display values and alarm con
-
ditions as part of the DENIS specification.
