IC697CMM742-LL Gas turbine module

Relay 12 Function

 • Range: kVA Load or Idle/ Rated Switch 

• kVA Load Switch Defines Discrete Output #12 as a kVA load switch. Uses kVA High and kVA Low value items in the Load Control Configuration Menu. 

• Idle / Rated Switch Defines Discrete Output #12 as an Idle / Rated speed switch. This output is typically used to automatically send the engine speed control an idle/rated command upon start up. Uses the Idle Speed and Idle Time items in the Engine Control Configuration Menu.

Speed Bias Type 

• Range: ±3 Vdc, 0.5–4.5 Vdc, or 500 Hz PWM

 • ±3 Vdc (WGC) Sets the speed bias output to ±3 Vdc range. 0 Vdc is zero output, –3 Vdc is –100% speed bias output, +3 Vdc is +100% speed bias output.

 • 0.5 to 4.5 Vdc (DDEC) Sets the speed bias output to 0.5 to 4.5 Vdc range. 2.5 Vdc is zero, 0.5 Vdc is –100% speed bias output, 4.5 Vdc is +80% speed bias output. 

• 500 Hz PWM (ADEM) Sets the speed bias output to 500 Hz Pulse Width Modulated (PWM) range. 50% duty cycle = 0% speed bias output, 0% duty cycle = –100% speed bias output, 100% duty cycle = +100% speed bias output.

Circuit Breaker Control

 • Range: Breaker or Contactor 

• Defines action of Generator and Mains closure command. 

• Breaker issues momentary breaker close signal, and a separate momentary breaker trip (open) signal. Get complete logic for Generator and Mains breaker commands in chapter 3 under “Relay Outputs”.

 • Contactor issues continuous breaker close signal through the breaker close relay output, DO2 for Generator and DO1 for the Mains