Operation; Standby Generator Operation; Protections; Analog Sensor Failure - Generac Power Systems Power Zone Pro Owner's Manual

Pin Name
(BS9) HV-G1 Generator A
(BS9) HV-G2 Generator B
(BS9) HV-G3 Generator C
(BS9) HV-GN Generator N
(BS9) HV-UN
(BS9) HV-U1
(BS9) HV-U2
(BS9) HV-U3

Operation

The Power Zone Pro Main Controller serves as a single
standby generator controller.

Standby Generator Operation

The Main Controller can function as an advanced
standby generator controller. The Connectivity Server
can be used to monitor and change parameters in the
Main Controller. The Main Controller touchscreen display
provides a view of all the important parameters and
status.
Specialized programs are built into the Main Controller to
allow customers to configure spare I/O to their own
needs. For example, the built in Programmable Logic
Controller can be programmed with PLC like logic to
eliminate the need for ancillary external controllers.
Everything can be user customized from measurements
to alarms for special functionality.

Protections

All generators are shipped with the manufacturer
recommended warnings, alarms, and shutdown alarms
to protect the generator and attached equipment. These
faults can be setup on any Analog or Digital Input
channel as well as the Digital Output Function channels.
This is done via the appropriate Setup → Protections →
Alarms Setup section of the Connectivity Server manual.
Disabling manufacturer recommended fault indications is
not recommended.
Owner's Manual for Power Zone Pro Main Controller
Table 3-9. HV Connector
Description
Generator Phase A Voltage
Sense
Generator Phase B Voltage
Sense
Generator Phase C Voltage
Sense
Generator Neutral Voltage
Sense
Utility N Utility Neutral Voltage Sense
Utility A Utility Phase A Voltage Sense
Utility B Utility Phase B Voltage Sense
Utility C Utility Phase C Voltage Sense
Configured Default
NA = Not Configurable
NA
NA
NA
NA
NA
NA
NA
NA

Analog Sensor Failure

Analog sensors can have sensor fault checks enabled.
These checks detect a raw analog input value outside of
the normally expected values for the sensor. These
thresholds and severity of the fault can be changed in the
Setup → Protections → Alarms Setup → Analog Input
Alarm section of the Connectivity Server.
The Engine Speed RPM input always has the sensor
fault enabled and it cannot be disabled. This is to ensure
the engine is not damaged in the event of an RPM sensor
failure.
2
Overcurrent I T
2
An I T algorithm is implemented for thermal protection of
the alternator. Once the output current of the alternator
exceeds 110% on any leg, the I
integrating the square of the output current over time.
Once that normalized value reaches "90", the generator
shuts down for overcurrent. This feature can be enabled/
disabled in the Setup → Protections → Thermal
Protection Setup section of the Connectivity Server.
Installation and Operation
Wire # (Default)
S1A
S2A
S3A
00
T00
T1A
T2A
T3A
2
T algorithm starts
21