8.2.4 Running detection
The controller can be configured to receive engine running feedback from a variety of measurements. There can be more than one
running feedback measurement.
Running detection
is a state calculated by the controller, and used by a number of functions. It is either OFF or ON. If any running
feedback measurements show that the engine is running, then
Running detection
is ON.
Inputs and outputs
Assign the running feedback input under
Configure > Input/output
. Select the hardware module, then select the input to configure.
Function
I/O
Type
Details
Engine > Feedback > Digital running
detection
Digital input Continuous
Optional. External equipment activates the digital input when
the engine is running.
The controller can also use the following inputs for running feedback.
Function
I/O
Type
Details
Frequency
Generator voltage
measurements
Continuous
Always present. The controller uses the generator voltage measurements
to calculate the frequency. The controller then compares the frequency
with the detection set point.
Note: The controller cannot measure the frequency at very low voltages.
See the
Data sheet
for the measurement range. The voltage must also be
at least 10 % of nominal for the controller to use the frequency for running
detection. For safety, DEIF recommends that you install at least one other
running detection input.
MPU
HSDI
Continuous
Optional. The MPU input (on the first EIM3.1 in the controller rack) is
connected to an MPU mounted on the engine.
W
HSDI
Continuous
Optional. The W input (on the first EIM3.1 in the controller rack) is
connected to the battery recharging generator and measures the engine
speed. Alternatively, the W input can be connected to an NPN/PNP
sensor.
Engine >
Running
detection > Oil
[bar]
Analogue input
Pressure in
bar
Optional. This set of analogue input terminals are connected to a
transducer for the engine oil pressure.
Parameters
Configure these parameters under
Configure > Parameters > Engine > Nominal settings > Nominal settings #
, where # is 1 to
4.
Parameter
Range
Nominal
setting 1
Nominal
setting 2
Nominal
setting 3
Nominal
setting 4
Comment
Nominal RPM
100 to
50000
RPM
1500 RPM
1500 RPM
1800 RPM
1800 RPM
When an MPU/W/NPN/PNP is used
to measure the engine speed, then
the nominal engine speed is used for
the overspeed and underspeed
alarms.
Configure these parameters under
Configure > Parameters > Engine > Nominal settings > Nominal settings # > Number of
teeth
, where # is 1 to 4.
DESIGNER'S HANDBOOK 4189340911K UK
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