Inputs and outputs
The tables below describes the inputs and outputs for the engine start function.
Assign the engine start inputs and outputs under Configure > Input/output. Select the hardware module, then select the input/
output to configure.
Table 8.6 Required engine start output
Function I/O Type Details
Engine > Control > Crank Digital output Continuous Connect this output to the engine crank.
Table 8.7 Optional engine start inputs and output
Function I/O Type Details
Engine > Function
> Start enable
Digital
input
Continuous
Optional. If this input is configured, it must be activated for the engine start
sequence to start.
Engine > Control >
Start prepare
Digital
output
Continuous
Optional. The Start prepare digital output may, for example, be wired to start a
pump, so that the engine oil pressure can build up before cranking. Note that Start
prepare does not have any provision for feedback. The Start prepare function is only
a timer, and does not check whether, for example, the pump start was successful.
The Start prepare digital output is not needed if the third party engine controller
ensures that all start prepare conditions are okay before activating the Start enable
digital input.
Engine > Function
> Remove start
(release crank
relay)
Digital
input
Pulse
Optional. The engine controller activates this input. In response, the GENSET
controller deactivates the Crank output, although the Crank on timer continues to
run.
This input is useful when only frequency is used for Running detection, but the
genset frequency increases slowly, and the crank must be removed before there is
Running detection. Even when this input is activated, the start sequence tries to
detect that the engine is running for the whole of the Crank on time.
Table 8.8
Optional engine start commands
Function I/O Type Details
Engine > Command >
Start engine
Digital
input
Pulse
Optional. When the controller is in SEMI mode, the operator or another
system can activate this input to request the controller to start the engine.
Engine > Command >
Block engine start
Digital
input
Continuous
Optional. The operator or another system can activate this input so that the
controller cannot start the engine. The input blocks the start in both AUTO
and SEMI mode. However, the input will not prevent an engine start when
the controller is under switchboard control.
Engine > Command >
Start engine and close
generator breaker
Digital
input
Pulse
Optional. When the controller is in SEMI mode, the operator or another
system can activate this input to request the controller to start the engine
and then synchronise and close the breaker.
Parameters (required)
Configure these parameters under Configure > Parameters > Engine > Start sequence > Crank.
DESIGNER'S HANDBOOK 4189340911K UK Page 289 of 521
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