ComAp InteliDrive DCU Marine - Example of Prefix and Speed Preset Calculation

InteliDrive DCU Marine - 3.0.0 Global Guide
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OT switch in On (1) position activates Overspeed Test = Reduce Overspeed limit to 50%.
Example of Prefix and Speed preset calculation
Required overspeed limit: RPM over = 1600 RPM
Basic settings: Gear teeth = 120
Speed preset formula: N = {[(RPMover x Gear teeth) / 60 ] / C } + 1
1. Step: X = (RPMover x Gear teeth) / 60 = 3200
2. Step select coefficient C according table and corresponding DIP Prefix
X range C Prefix
2016 to 8128 32 1000
504 to 2032 8 0100
126 to 508 2 0010
1 to 127 0,5 0001
Table 1
X = 3200 is in the range 2016 to 8128 → C = 32; Prefix = 1000
3. Step: Speed preset = 3200 / 32 + 1 = 101; -> 01100101 in binary format.
4. Step: set Prefix = 1000 and Speed preset = 01100101
RPMover Gear teeth Prefix Speed preset DIP8
1800 150 1000 141 10001101
1800 120 1000 113 01110001
1800 60 0100 226 11100010
1000 30 0010 251 11111011
Table 2. Another examples of overspeed setting
Speed preset DIP8
0 00000000
1 00000001
2 00000010
4 00000100
8 00001000
16 00010000
32 00100000
Speed preset binary conversion examples