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5.12 U: Monitor Parameters
5.12 U: Monitor Parameters
Monitor parameters let the user view various aspects o f drive performance using the digital operator display. Some
monitors can be output from terminals FM and AM by assigning the specific monitor parameter number (U D -П П ) to
H4-01 and H4-04.
Refer to H4-01, H4-04: Terminal FM, A M Monitor Selection on page 186 for details on assigning
functions to an analog output.
• U1: Operation Status Monitors
Status monitors display drive status data such as output speed and output current. Refer to U1: Operation Status
Monitors on page 355 for a complete list o f U 1-D D monitors and descriptions.
• U2: Fault Trace
Use these monitor parameters to view the status o f various drive aspects when a fault occurs.
This information is helpful for finding out why a fault occurred. Refer to U2: Fault Trace on page 357 for a complete list
o f U 2-D D monitors and descriptions.
U 2-D D monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 216 for
instructions on how to reset these monitor values.
N ote: Fault trace (i.e., the fault history) is not kept when CPF00, CPF01, CPF06, CPF24, oFA00, oFb00, oFC00, Uv1, Uv2, and Uv3
occur.
• U3: Fault History
These parameters display faults that have occurred during operation as well as the drive operation time when those faults
occurred. Refer to
U3: Fault History on page 358 for a complete list o f U 3-D D monitors and descriptions.
U 3-D D monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 216 for
instructions on how to reset these monitor values.
N ote: Fault trace (i.e., the fault history) is not kept when CPF00, CPF01, CPF06, CPF24, oFA00, oFb00, oFC00, Uv1, Uv2, and Uv3
occur.
• U4: Maintenance Monitors
Maintenance monitors show:
• Runtime data o f the drive and cooling fans and number o f Up/Down commands issued
• Maintenance data and replacement information for various drive components
• kWh data
• Highest peak current that has occurred and output speed at the time the peak current occurred
• Motor overload status information
• Detailed information about the present Up/Down command and speed reference source selection
Refer to U4: Maintenance Monitors on page 358 for a complete list of U 4-D D monitors and descriptions.
• U6: Control Monitors
Control monitors show:
• Reference data for the output voltage and vector control
• Data on PM motor rotor synchronization, forward phase compensation, and flux positioning
• Pulse data from the motor encoder
• Pulse data for Position Lock control
• Speed Loop and Inertia Compensation control monitors
Refer to Figure 5.10 on page 150 for details and an illustration showing where monitors are located in the speed
control loop block.
232 YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual