5.12 U: Monitor Parameters
Monitor parameters let the user view various aspects of drive performance using the digital operator display. Some monitors
can be output from terminals FM and AM by assigning the specific monitor parameter number (Uo-oo) to H4-01 and H4-04.
Refer to H4-01, H4-04: Multi-Function Analog Output Terminal FM, AM Monitor Selection on page 230 for details on
assigning functions to an analog output.
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U1: Operation Status Monitors
Status monitors display drive status data such as output frequency and output current. Refer to U1: Operation Status
Monitors on page 479 for a complete list of U1-oo monitors and descriptions.
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U2: Fault Trace
Use these monitor parameters to view the status of various drive aspects when a fault occurs.
This information is helpful for determining the cause of a fault. Refer to U2: Fault Trace on page 481 for a complete list of
U2-oo monitors and descriptions.
U2-oo monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 273 for instructions
on how to reset these monitor values.
Note: Fault histories are not kept when CPF00, CPF01, CPF06, CPF24, oFA00, oFb00, oFC00, Uv1, Uv2, or Uv3 occur.
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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 482 for a complete list of U3-oo monitors and descriptions.
U3-oo monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 273 for instructions
on how to reset these monitor values.
Note: Fault histories are not kept when CPF00, CPF01, CPF06, CPF24, oFA00, oFb00, oFC00, Uv1, Uv2, or Uv3 occur.
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U4: Maintenance Monitors
Maintenance monitors show:
• Runtime data of the drive and cooling fans and number of Run commands issued
• Maintenance data and replacement information for various drive components
• kWh data
• Highest peak current that has occurred and output frequency at the time the peak current occurred
• Motor overload status information
• Detailed information about the present Run command and frequency reference source selection
Refer to U4: Maintenance Monitors on page 483 for a complete list of U4-oo monitors and descriptions.
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U5: PID Monitors
These monitors display various aspects of PID control. Refer to PID Block Diagram on page 163 for details on how these
monitors display PID data.
Refer to U5: PID Monitors on page 485 for a complete list of U5-oo monitors and descriptions.
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U6: Operation Status Monitors
U6 Control monitors show motor secondary current data.
Refer to U6: Operation Status Monitors on page 485 for a complete list of U6-oo monitors and descriptions.
5.12 U: Monitor Parameters
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YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
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