Woodward 9907-2328 GSOV80 Gas Fuel Shutoff Valve, 2.0” Flange

Power requirements depend on the number and type of modules supplied for each system. For a system

with a single I/O chassis, size the input power source according to the rating of the MicroNet Plus power

supply to which the source is connected. Do not size the supply mains for the sum of the MicroNet Plus

power supply ratings when redundant supplies are used. MicroNet Plus supplies are redundant when

installed in the same chassis. Redundant supplies share the load between them equally, but each must

provide for full load in the event that one of the units is disabled. 

Table 4-3 gives the maximum overload

protection for supply mains connected to any single or redundant pair of MicroNet Plus main power

supplies. It is not recommended that both MicroNet Plus main power supplies of a redundant pair be

connected to a single source, since failure of that source would disable the system.

To reset a unit's peak speed, place the key switch in the PROGRAM position,

then press the RESET key. The message "RESET PEAK? ADJ  = YES ADJ 

= NO" appears. Press the ADJ  key to reset the peak speed. After pressing

either the ADJ  or the ADJ  keys, the unit resumes normal operation. If

neither key is pressed within 10 seconds, a "no" response is assumed and the

prompt disappears. Return the key switch to the MONITOR position.

An MPU loss-of-signal occurs when an MPU frequency of less than 100 Hz is

measured and the previously measured speed was greater than 120 Hz. The

alarm relay de-energizes, and the MPU FAIL LED turns on and remains on until

a reset or until power is cycled. If the TRIP ON MPU FAILURE option is "yes", a

trip occurs. If the previously measured speed is less than 120 Hz, it is assumed

that a normal rolldown has occurred. The MPU FAIL LED does not turn on, the

alarm relay does not de-energize, and no trip occurs.