To check the Emergency stop:
1. Press the switchboard Emergency stop button.
2. Check whether the Emergency stop alarm is shown on the display unit.
• If the Emergency stop alarm is shown, then the Emergency stop button is working.
• If the Emergency stop alarm is not shown:
a. Use PICUS or the display unit to check that the Emergency stop function in the software is assigned to the correct
digital input terminal.
b. Use a multimeter to check the wiring from the Emergency stop button to the digital input terminal.
3.6.2
Checking the protection parameters
The designer should have configured all the necessary protections in each controller during the design phase. However,
different parts of the world and different owners can have different requirements for the AC protections.
It is therefore necessary to check all the protections against the list of protections required by the class society and/or ship
owner. Ensure that for each required protection:
• The nominal setting(s), which the protection is based on, are correct.
• The protection is enabled.
• The protection set point is correct.
• The protection time delay is correct.
• The action for the protection (for example, Trip breaker or Warning) is correct.
• The inhibit(s) (if present), which prevent the protection response, are correct.
To check the nominal settings and protections for each controller:
1. Connect to the controller using PICUS.
2. Under Configure > Parameters, you can find the nominal settings (see the example for a GENSET controller in the table
below). Check that these match the settings from the switchboard manufacturer.
3. Under Configure > Parameters, you can find the AC protections (see the example for a GENSET controller in the table
below). Check the parameters. Make changes as necessary.
4. Write the new parameters to the controller.
Table 3.1
Nominal settings for a GENSET controller
Configure > Parameters > Nominal setting(s)
Engine > RPM Nominal RPM
Generator > Nominal settings Voltage, Current, Frequency, Power, Apparent power, Power factor
Busbar > Nominal settings Voltage, Frequency
Table 3.2 Essential AC protections for a GENSET controller
Configure > Parameters > Protection(s)
Generator > Voltage protections Over-voltage, Under-voltage
Generator > Current protections Over-current
Generator > Frequency protections Over-frequency, Under-frequency
PPU 300 Commissioning guidelines 4189341106 UK
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