62-11640
7–118
26105
ENGINE OVERRUN ENCU
• ACTIVATION: Engine speed > 2070 min
−
1 (rpm)
• UNIT CONTROL: Engine Operation: Required Shutdown.
Electric Operation: Will not activate in electric operation.
• RESET CONDITION: If trigger on message not received for 5 seconds, alarm reset or alarm may be
manually reset by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
Section, page 7-2.) Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Refer to:
26106
SENSOR SUPPLY VOLTAGE 1 LOW
• ACTIVATION: Voltage to sensor is below 4.00 V
• UNIT CONTROL: Engine Operation: Required Shutdown.
Electric Operation: Will not activate in electric operation.
• RESET CONDITION: If trigger on message not received for 5 seconds, alarm reset or alarm may be
manually reset by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
Section, page 7-2.) Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1.
Check Engine Speed Sensor (ENSSN)
a. Check actual engine speed using a hand held tachometer and compare with speed shown in unit
data. Must be ± 20 rpm. Must be a steady reading.
b. Inspect sensor, connector pins & terminals. (See wiring schematic
.) Verify there is no
physical damage to sensor, and no damage or corrosion in connections.
c. Check power from ENCU. +5 VDC from terminal ENCU
−
43 to ENSSN
−
3
d. Check power from ENCU. +5 VDC from terminal ENCU
−
29 to RPS
−
1
e. Check ground to ENCU. Check wiring from terminal ENCU
−
20 to ENSSN
−
1
f. Check signal to ENCU. Check wiring from terminal ENCU
−
2 to ENSSN
−
2
2.
Check Rack Position Sensor (RPS). Refer to
Summary of Contents for Vector 8500
Page 23: ...62 11640 1 6 1 3 SAFETY DECALS ...
Page 24: ...1 7 62 11640 62 03958 ...
Page 25: ...62 11640 1 8 ...
Page 26: ...1 9 62 11640 ...
Page 27: ...62 11640 1 10 ...
Page 125: ...62 11640 SECTION 6 MESSAGECENTER PARAGRAPH NUMBER Page 6 1 MESSAGECENTER MESSAGES 6 1 ...
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