Generac Power Systems Power Zone PZCONSVR Owner's Manual page 25

Auto Mains Failure (AMF)
See 3-42. Auto Mains Failure (AMF) provides a
Figure
way to control a non-intelligent transfer switch from the
Power Zone Pro Main Controller. When AMF is enabled,
the Controller monitors utility voltage and frequency,
controls starting and stopping of the generator, and
controls switching of the load from utility to generator and
back again as needed. See
each parameter.
To set the configuration:
Enter a value for each of the AMF settings.
1.
Enable AMF by clicking the "Enable" check box.
2.
Select "Apply Changes".
3.
The manual control buttons can be used to manually
switch the load between the utility and the generator.
NOTE: The manual switching will only work if the power
source meets the defined quality ranges. The load
cannot be connected to both the utility and the generator
a the same time.
Setting Range and Units
Enable Enabled or
disabled
Utility Voltage Volts, 103% -
Upper Limit 130% of target
voltage
Utility Voltage Volts, 50% - 97%
Lower Limit of target voltage
Utility Hz, 103% - 120%
Frequency of target
Upper Limit frequency
Utility Hz, 80% - 97% of
Frequency target frequency
Lower Limit
Return to Utility Seconds, 0 - 1800
Delay
Line Interrupt Seconds, 0 - 60
Delay
Time Delay Seconds, 0 - 60
Neutral
Owner's Manual for Power Zone Connectivity Server
for a description of
Table 1
Table 1 - AMF Parameters
Description
Enables or disables the use of AMF.
Highest allowed utility voltage.
Lowest allowed utility voltage.
Highest allowed utility frequency.
Lowest allowed utility frequency.
The amount of time to delay switching the load back to utility once utility has
been restored to be within the voltage and frequency ranges above. If
voltage or frequency of the generator is outside of the acceptable range, the
load will immediately switch back to utility.
The amount of time the utility can be outside of the ranges above before the
generator is started. If the generator is already running, the load will be
switched immediately without line interrupt delay.
If the switch has a neutral position where the load is not connected to either
generator or utility, this is the time the switch stays in the neutral position
when transitioning the load between utility and generator.
Installation and Operation
Figure 3-42. Auto Mains Failure
A Utility Switch Open/Close
B Generator Switch Open/Close
C Generator Start/Stop
A
B
C
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