Misinterpreting the wiring schematic can lead to erratic engine behavior, complete shutdowns, or permanent damage to the actuator or magnetic pickup. In this deep-dive guide, we will dissect the S6700H’s pinouts, explain every terminal function, provide best practices for installation, and offer troubleshooting tips.
The S6700H (often referenced as part of the SyncroStart or Woodward lineage compatible with Cummins systems) is an electronic governor control unit. Its primary function is to maintain a constant engine speed regardless of load changes. When a generator suddenly accepts a heavy electrical load, the engine naturally tends to slow down. The S6700H detects this drop via a magnetic speed sensor and instantly increases the fuel actuator output to maintain the desired RPM. cummins speed controller s6700h wiring diagram
Key features of the S6700H typically include: Misinterpreting the wiring schematic can lead to erratic
Connect to an Idle/Rated speed switch. When the switch is closed, the engine stays in idle; when open, it rises to the rated operating speed. Terminals 10 & 11 (Droop): Its primary function is to maintain a constant
The is a high-precision, all-electronic device used primarily with Cummins diesel engines to maintain a constant speed despite changes in load. Its core functionality relies on a closed-loop control system that monitors engine speed through a magnetic pickup and adjusts the fuel actuator accordingly. Wiring and Terminal Layout
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