EGCP-2 Engine Generator Control Package Manual 26086
58 Woodward
Modbus Timeout
• Sets the timeout time for Modbus communications. See the Serial
communications section of this manual for details.
Modbus Reset
• Can be used to reset the Modbus error indications for the unit.
Calibration Menu
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.
The calibration menu item “PT Phase A Scale” will display the A-B generator
phase voltage in the lower to lines of the display. This value will change as the
PT Phase A Scale value is adjusted.
Process Input Scale
• Actual Input 4–20 mA, or 1–5 Vdc process signal from external transducer.
• Monitor the Pin (process in) reading in the Load Control Monitor menu.
• Calibrate Process input scale until Pin reads accurately what measured
process signal is.
• Engine must be in a test or run mode and operating to observe the Pin
value in the lower two lines of the setpoint screen.
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