KEB COMBIVERT F5, Operation Manual, Page: 119 / 138

119
Diagnostic Solutions
5.4. Diagnostic Solutions
Typical solutions in reference to operational problems in section 5.3.
Item # Check/Solution
Monitor the Input Status to
Determine Active Speed and/
or Active Profile (digital input
control modes) For the given combination of inputs selected, verify which speed com-
mand is selected according to the Control Type (US04) and Special
Input Functions (LI03). This should match the Active Speed (Diagnos-
tics 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 opera-
tion modes (e.g. Earthquake Speed, UPS/Battery Operation Speed,
Emergency Power Speed) assigned to any inputs (LI04, 05, 11).
Determine the correct motor
speed in rpm. 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.