Accessory Modules for IL-NT, IC-NT, IA-NT and ID-Lite Global Guide
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The RPU stops the engine in case
Engine RPM exceeds configured Overspeed (Overspeed RPM configuration)
Emergency stop input is deactivated (active when conneted to bat- )
At this situation
Stop solenoid is switched to 1
Fuel solenoid switched to 0
Status red LED diode ENG is lightening
The RPU allows new start of engine in case
Engine RPM = 0
Emergency stop input is active
10 second delay has expired after the previous conditions were met
At this situation
Stop solenoid output is set to 0
Fuel solenoid output is set to 1
Status green LED diode ENG is lightening
Returning the control back from RPU to InteliDrive Marine unit
When the InteliDrive Marine unit is back in operation it is possible to switch back to its control by
Pressing Fault Reset button on the InteliDrive Marine unit – Fault reset Binary output or External switch
has to be connected to FR input of Inteli RPU.
Pressing Reset button on Inteli RPU
Overspeed test
By pressing OST button the RPU Overspeed Test is performed. The behavior is same as in case of a real
issuing of overspeed protection. Engine is stopped as described in Feature “RPU engine control while failure
of InteliDrive Marine unit”.
Note:
For the Overspeed Test the RPU has to be controlling the engine ( InteliDrive Marine has to be
switched off) and the engine has to be running.
Note:
Overspeed test is issued by setting the overspeed protection RPM to half of the value configured by
dip switches.
4.16.3 Overspeed RPM configuration
Overspeed RPM protection is configured by switching dip switches SPEED PRESET and TIME BASE
according to following instructions.
Step 1
Use following formula to calculate value X:
X = (RPMover x Gear teeth)/60
Step 2
According to value X calculated in step 1 select DIP TIME BASE configuration and value C to be used in step
3 from following table:
