Deif PPU 300 - Controller Power Supply; Connect the Controller Protective Earth; Switchboard Control; Factory Settings

1.2.4
Controller power supply
If the controller has no power supply, it is OFF and does not provide any protection. The controller cannot enforce any trips,
shutdowns or latches when it is off. The controller does not provide any control or load sharing. All the controller relays de-
energise.
The controller must have a reliable power supply (including a backup power supply). In addition, the switchboard design must
ensure that the system is sufficiently protected if the controller power supply fails.
1.2.5 Connect the controller protective earth
You must ground the controller rack to create a protective earth.
DANGER!
Failure to ground the controller rack could lead to injury or death.
1.2.6 Switchboard control
Under Switchboard control, the operator controls and operates the equipment from the switchboard. When switchboard
control is activated:
• If an alarm situation arises, and the alarm action requires a trip and/or shutdown, then the controller trips the breaker and/or
shuts down the engine.
• The controller DOES NOT accept operator commands.
• The controller cannot and DOES NOT prevent any manual operator actions.
The switchboard design must therefore ensure that the system is sufficiently protected when the controller is under
switchboard control.
1.2.7 Factory settings
The controller is delivered pre-programmed from the factory with a set of default settings. These settings are based on typical
values and may not be correct for your system. You must therefore check all parameters before using the controller.
1.2.8
Remote-controlled starts
The gensets can be started by remote signals (for example, by using an Ethernet connection, or a digital input). A remote
start could lead to personal injury. The genset design, layout, and maintenance procedures must take this into account.
1.2.9 Electrostatic discharge
You must protect the equipment terminals from electrostatic discharge when not installed in a grounded rack. Electrostatic
discharge can damage the terminals.
1.2.10 Do not manually override active alarm actions
DANGER!
Do not use switchboard or manual control to override the alarm action of an active alarm.
PPU 300 Commissioning guidelines 4189341106 UK
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