GE 705-1512-01 Automatic card

While each unit will be factory calibrated at Woodward prior to shipment, there are bound to be some inputs/outputs affected by external wiring and/or interfaces (relays, transformers, etc.) that will require calibration at the site during commissioning. The Calibration Menu allows calibration of all the analog inputs to the EGCP-2, as well as the speed bias and voltage bias outputs. All calibration points in the EGCP-2 are used to make the actual value of an input, such as generator voltage, read out on the respective display screen of the EGCP-2 the proper value of the signal being monitored.

In order to assist in calibrating the unit

 each calibration menu item has the sensed input being calibrated displayed on the lower two lines of the right hand LCD screen. These values are updated every 200 milliseconds. All adjustments in the configuration menus are immediate in their action (that is, values do not need to be entered into memory to have an effect on the sensed input, or control operation). Example: 380 Vac measured line to line on the generator A-B phase should read 380 Vac in the line to line voltage measurement area of the EGCP-2 “generator status” menu. The EGCP-2 is configured for Line to Line voltage input.

Process Input Scale

 • Measure the actual Process Input Signal from external transducer. • Calibrate the Process Input Scale until the Process Input, bottom line on display screen, reads what the measured process signal is. The calibration menu item “PT Phase A Scale” will display the A-B generator phase voltage in the lower two lines of the display. This value will change as the PT Phase A Scale value is adjusted.Calibration is required for Caterpillar’s ADEM speed control. o PWM range needs to be calibrated for 69% Duty Cycle as measured on Terminals 73(+) and 74(–). ƒ Preset Speed Bias Offset to 39.00%