Diagnostic Solutions - KEB COMBIVERT F5 Reference Manual

7.4 Diagnostic Solutions

Typical solutions in reference to operational problems in section 7.3.
Item #
Monitor the Input Status to
Determine Active Speed and/
or Active Profile (digital input
control modes)
Determine the correct motor
speed in rpm.
Diagnostics and Troubleshooting
Check/Solution
For the given combination of inputs selected, verify which speed
command is selected according to the Control Type (US04) and
Special Input Functions (LI03). This should match the Active Speed
(Diagnostics Screen #10). Verify the corresponding speed setting in
the Speed Profile (LS) parameter group.
In addition, monitor the status of inputs assigned as any special
operation modes (e.g. Earthquake Speed, UPS/Battery Operation
Speed, Emergency Power Speed) assigned to any inputs (LI04, 05, 11).
For a given command speed in FPM, the corresponding speed in rpm
is calculated as:
Digital Input Speed Commands:
RPM = (12 * Roping Ratio * Gear Ratio * FPM) / (Sheave Diameter *
3.14)
Analog Speed Control:
RPM = (Processed Analog Pattern * High Speed *12 * Roping Ratio *
Gear Ratio * FPM) / (Sheave Diameter * 3.14 * 100)
Refer to Analog I/O (LA) parameter group for calculation of Processed
(Analog) Pattern from Raw (Analog) Pattern.
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