Ingersoll-Rand Thermo King SGCM 4000, Руководство по обслуживанию

Страница: 48 / 181

47
Controller Description
SG+ Controller Description
The SG+ controller is a two-piece, self contained microprocessor for diesel generator sets. The SG+
display is mounted on the control box cover. The SG+ microprocessor is mounted inside the control box
(see Figure 10 on page 48). Three external relays - two ECU Relays and the Start Relay are also mounted
inside the control box near the microprocessor. Another Relay - the Preheat Relay, is located in the
Engine Compartment.
This system automatically controls generator operation by providing:
• Automatic unit preheat and engine startup during initial startup or delayed restart
• Variable glow plug preheat time
• Automatic Pretrip Test capability
• Delayed alternator excitation for 2 minutes
• Unit shutdown protection for the engine and alternator. The controller stops the unit due to low engine
oil pressure, low engine oil level, high coolant temperature, or alternator overload.
• Automatic unit restart 20 minutes after unit shutdown due to an unknown condition, high engine
water temperature, engine failure to start, check fuel alarm, or alternator overload (also low engine oil
pressure if enabled). It will attempt three (3) restarts and then stop.
Figure 9: SG+ Controller Display