Full Product Manual

TP-7092 4/23 39
2.5.6 Faults Related to Paralleling
If the PowerSync
®
Automatic Paralleling Module (APM) is used with two 14 kw or two 20 kW or 26 kW generator sets, additional
faults and events related to the paralleling system may be displayed on the controller and/or in OnCue Plus. This section lists
those faults and events. See the installation instructions provided with the APM for additional paralleling information.
Note:
Contact an authorized dealer for paralleling system installation, startup, troubleshooting, or service.
Fault Text
Description
When Active
Warning Delay, sec.
Display Cleared On
Current A High Warning
Over Current
Paralleled
10
Press AUTO or OFF *
Frequency High Warning
Over Frequency
Paralleled
10
Press AUTO or OFF *
Frequency Low Warning
Under Frequency
Paralleled
10
Press AUTO or OFF *
Reactive Power Low Warning
Loss of Field
Paralleled
10
Press AUTO or OFF *
Real Power High Warning
Over Power
Paralleled
10
Press AUTO or OFF *
Real Power Low Warning
Reverse Power
Paralleled
10
Press AUTO or OFF *
Voltage L1-L2 High Warning
Over Voltage
Paralleled
10
Press AUTO or OFF *
Voltage L1-L2 Low Warning
Under Voltage
Paralleled
10
Press AUTO or OFF *
 Pressing OFF will stop the generator set.
Figure 26 Warning Messages (protective relay disconnect)
Fault Text
Description
Possible Causes *
BusDeadLive
The bus is measured to be dead when one of the generators is
supposed to be supplying voltage to the bus (closed contactor)
Bus metering V9A and V9B connections to
V9 of paralleling protection harness are
connected incorrectly.
BusLiveDead
The bus is measured to be live when no generators are
connected to it (both contactors open).
Bus metering V9A and V9B connections to
V9 of paralleling protection harness
connected incorrectly.
CfgModelNum
The two generators that are intended to be paralleled have
incompatible model numbers.
Incorrect configuration of one of the
generators. Different generator types.
The paralleled generator sets must be the
same kW model. (i.e. two 14 kW or two
20 kW or 26 kW models).
CfgSysVolt
The system voltage of the two generators intended to be
paralleled is not the same. Because the system does not know
which voltage is correct, the generators will not be allowed to
start.
One of the two generators is incorrectly
configured.
Intermittent connections on RBUS network
wiring.
ChkngMeter
This generator has paralleled to the other generator and is
verifying that the metering is connected and establishing the
connection direction.
Status message appears the first time the
two generators are paralleled.
ConCheckFail
Failure to Auto-Discover APM connections.
Wires 9A and 9B crossed between the
generators.
Wires 9A or 9B not connected.
ConChecking
Performing APM connection auto-discovery.
This generator has started in RUN, the
other generator is in OFF.
ConNotDeterm
APM connection auto-discovery is not complete. This means that
the generator does not know which contactor is connected to it.
Generators not yet started in RUN with
other generator in OFF. See the APM
instruction sheet for instructions to perform
the auto-discovery procedure.
ContactorOk
Successful auto-discovery of APM connections.
Auto-discovery was activated by placing
other generator in OFF and this generator
in RUN.
ErraticSig
The power metering on this controller gives a signal that is not
consistent with the system configuration. Reversing the power
direction does not resolve the problem.
Bad wiring to the CT.
Too much tension on wires from the CT to
the controller.
LossOfComAPM
The Automatic Paralleling Module has stopped communicating on
RBUS. (An APM was detected on the RBUS network but is no
longer communicating).
APM is unplugged.
Primary controller is powered down. Check
the battery connections. See previous page
for more information.
Intermittent connections on RBUS network
wiring. Check RBUS communication
connections.