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Oil-Less Claw Medical Vacuum

Appendix B: Variable Speed Drive Inverter

B.3.5 Trouble Shooting Checklist

NOTE: If the cause is still unknown after every check, contact BeaconMedæs Tech Support at
888-4-MEDGAS.

Motor does not rotate as commanded
1) Check the value of torque boost setting (Pr. 0).

2) Check the main circuit.
• Check that a proper power supply voltage is applied (operation panel display is
provided).
• Check that the motor is connected properly.
• Check that the jumper across P/+-P1 is connected.
3) Check the input signals.
• Check that the start signal is input.
• Check that both the forward and reverse rotation start signals are not input
simultaneously.
• Check that the frequency setting signal is not zero. (When the frequency command is
0Hz and the start command is entered, FWD or REV LED on the operation panel fl ickers.)
• Check that the output stop signal (MRS) or reset signal (RES) is not on.
• Check that the CS signal is not OFF with automatic restart after instantaneous power
failure function is selected (Pr. 57 ≠ “9999”).
• Check that the sink or source jumper connector is fi tted securely.
4) Check the parameter settings.
• Check that the reverse rotation prevention selection (Pr. 78) is not selected.
• Check that the Operation mode selection (Pr. 79) setting is correct.
• Check that the bias and gain (calibration parameter C2 to C7) settings are correct.
• Check that the starting frequency setting (Pr. 13) is not greater than the running
frequency.
• Check that frequency settings of each running frequency (such as multi-speed
operation) are not zero.
• Check that especially the maximum frequency setting (Pr. 1) is not zero.
• Check that the jog frequency setting (Pr. 15) is not lower than the starting frequency
setting (Pr. 13) value.

5) Inspection of load.
• Check that the load is not too heavy.
• Check that the shaft is not locked.

4107 9000 95.04 B-22