238 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
2.11 U: Monitor Parameters
2.11 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 output terminals 1 to 4 by assigning the specific monitor parameter number to H4-01,
H4-11, H4-21, and H4-31. Refer to H4-01, H4-11, H4-21, H4-31: Analog Output 1, 2, 3, 4 Monitor Selections on
page 198 for details on assigning functions to an analog output.
Analog output option card AO-A3 also lets the user view various aspects of drive performance.
u 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 76 for a complete list of U1- monitors and descriptions.
u U2: Fault Trace
These monitor parameters are used to view various drive statuses when a fault occurs.
This information is helpful for finding out why a fault occurred. Refer to U2: Fault Trace on page 79 for a complete list
of U2- monitors and descriptions.
U2- monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 236 for
instructions on how to reset these monitor values.
Note: Fault trace (i.e., the fault history) is not kept when CPF00, CPF01, Uv1, Uv2 occur.
u 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 80 for a complete list of U3- monitors and descriptions.
U3- monitors are not reset when the drive is initialized. Refer to o4-11: U2, U3 Initialization on page 236 for
instructions on how to reset these monitor values.
Note: Fault trace (i.e., the fault history) is not kept when CPF00, CPF01, Uv1, Uv2 occur.
u U4: Maintenance Monitors
Maintenance monitors show:
•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 80 for a complete list of U4- monitors and descriptions.
u U5: PID Monitors
These monitors display various aspects of PID control. Refer to PID Block Diagram on page 118 for details on how
these monitors display PID data.
U5: PID Monitors on page 82 has a complete list of U5- monitors and descriptions.
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