Woodward 9907-899 GSOV25HT Gas Fuel Shutoff Valve, 2.0” Flange

If the microcontroller determines that the data in EEPROM has been corrupted,

the display shows "eeprom data lost". If this type of fault occurs, reset the unit. If

the fault continues to occur, replace the unit and return it for repair.

The microcontroller monitors an interlock signal which indicates that the internal

hardware cables are connected correctly. If this signal indicates a missing

interlock, a trip occurs. The cause of the trip is annunciated as an interlock fault.

If this fault occurs, check all cable connections.

If a monitor circuit determines that the microcontroller is not functioning, a trip

occurs. The CPU FAIL LED turns on. If this fault occurs, replace the unit and

return it for repair.

Multiple chassis systems using MicroNet power supplies may have power supplies of the same model,

but in different chassis, connected to the same source. In this case, each branch to a chassis must have

its own overcurrent protection sized according to Table 4-4. and the power source must be sized for the

sum of the branches.

Input Power Wiring

MicroNet controls require a fixed wiring installation for ac applications. Ground leakage exceeds 3.5 mA

AC. Maximum ground leakage for ac installations is 7.2 mA at 60 Hz. A ground conductor connected to

the chassis is required for safety. The power supply grounding terminal(s) should also be connected to

earth to ensure grounding of the power supply printed circuit boards. The grounding conductor must be

the same size as the main supply conductors.