During the initial period after the engine has been started, there can be fluctuations in engine
speed and alternator output that could generate spurious fault indications. Control On Delay
(P31) defines a period during which any fault indications, except High Temperature, will be
ignored by the
his period begins when the
has detected engine starting and
has cut off the drive to the starter motor.
unit. T
EAOM-72F
5.1.16 Control On Delay (P31)
Engine Cooling Time (P34) defines the duration of the cooling-off period. When operating under
heavy load, the engine can get very hot and is only prevented from overheating by circulating
coolant. If the engine is stopped abruptly under these conditions, it can overheat as the coolant
flow is cut off. Where the unit controls the load, via one of the configurable outputs, it can ensure
that the engine continues to run after the load has been removed.
5.1.17 Engine Cooling Time (P34)
This timer is only operative when one of the configurable relay outputs is programmed to perform
the pre-heat/post-heat function. When starting the generator, this output is active for time period
defined in the Pre-Heat/Post-Heat time (P10) prior to running starter motor, and remains active
during cranking and after the engine has started. If the engine fails to start, the pre-heating/post-
heating output remains switched on during repeated starting attempts.
5.1.18 Preheat Time (P10)
The current transformer input / output ratio can be entered into parameter Current Transformer
Ratio (P15), allowing the primary current value to be displayed. Example If the CT is 50:5A, set
Current Transforer Ratio (P15) to 10.
5.1.19 Current Transformer Ratio (P15)
P36 Configurable Failure Input - 1
P37 Configurable Failure Input - 2
P38 Configurable Failure Input - 3
Connecting any of these inputs to 0V can activate the LED annunciator and/or alarm horn. The
product can be programmed to respond in one of four ways:
Status – The LED lights only while the input is 0V.
Fire Switch Mode – When selected, the engine will keep running even if a shutdown signal or
alarm is detected.
Only Horn Temporary – The LED lights and the alarm horn sounds while the input is at 0V.
Only Horn Permanent - The LED flashes while the horn is sounding and then stays on until the
reset button is pressed.
Engine Stop - the same as 2 but, in addition, the engine is stopped.
0.
1.
2.
3.
4.
5.1.20 Configurable Inputs
Configurable Output-1 (P40)
Configurable Output-2 (P41)
These outputs can be programmed to operate in the following ways:
Alarm output. Active when any fault is reported. Can be used for either audible or visual alert
Engine running. Active while the engine is running.
Load transfer permitted. The output is active while the alternator output voltage is between the
Alternator Voltage Lower Limit (P00) and Alternator Voltage Upper Limit (P01). This output can be
used to control a contactor that transfers the load to the alternator once the generator set is up
and running.
0.
1.
2.
5.1.21 Configurable Outputs
31
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