Check Engine RPM
engine
Description
Engine speed was out of range after 3 seconds above 1300 rpm, and the unit alarms only or shuts down if configured for shutdown.
Activation Conditions
In Engine Operation and Alarm 00130 is not active and Engine speed is greater than 1300 rpm for three seconds and: Engine speed is greater than 2100 rpm for five minutes or Engine speed is less than 1250 rpm for five minutes or Engine speed is less than 1200 rpm for 10 seconds
Unit Behavior
Engine Operation: Alarm only or (if configured for shutdown) engine and unit shutdown and alarm. Electric Operation: This alarm will not activate in Electric Operation
Reset Conditions
Engine rpm > 1250 and < 2000 for five minutes. Auto reset if engine speed is within the specified range for five minutes or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again
Corrective Actions
1. Run Pre-trip - Pre-trip will test low speed and high speed operation. 2. Force Low Speed Operation - Set the High Speed Delay Functional Parameter to 10 minutes and restart unit. (Reset following testing) System should run in low speed. If not, check speed overrides, Figure 4.10.3. Ensure System is calling for low speed when performing step 3. 3. Check Low Speed Engine RPM a. Check actual engine speed using hand held tachometer. Refer to Table 3–1. Speed must be within range provided above. b. Compare actual speed with that shown in Unit Data. Readings within ± 50 rpm. 4. Check High Speed Engine RPM a. Check actual engine speed using hand held tachometer. Refer to Table 3–1. b. Compare actual speed with that shown in Unit Data. Both readings must be within ± 50 rpm. 5. Check Engine Air-Intake System a. Check air cleaner indicator. Flag must not be visible. b. Inspect air intake system. Verify hoses and tubes in good condition, with no kinks or restrictions. 6. Check Engine Control Unit (ENCU) and Fuel/Speed Actuator (FSA) a. Check voltage from fuse to ENCU-22. Verify correct fuse, see Figure 2.7. Must have minimum 11 VDC with the battery connected and SROS in the OFF position. b. Check voltage to ENCU-44. Must have minimum 11 VDC with SROS in the START/RUN position. If no, energize the run relay output using Component Test mode (refer to Section 5.2.4) and retest. c. Check for ground at ENCU-19. If ground not good, check connectors and wiring between terminals for damage, moisture or corrosion. d. Inspect fuel/speed actuator (FSA), engine speed sensor (ENSSN) and engine speed control unit (ENCU) connector pins and terminals. Verify no physical damage to components, and no damage or corrosion in connectors. e. Check resistance and amp draw of FSA. Refer to Section 2.12 for specifications. f. Check FSA plunger. Must move in and out freely. Refer to engine manual.