Eliwell EWCFW-08 User Manual page 80

CHAPTER 6 - DIAGNOSTICS AND TROUBLESHOOTING
PROBLEM
Motor speed too Programming error
high or too low (reference limits)
Signal of the
Reference Control
(if used)
Motor nameplate
data
Display OFF Keypad connection
Power supply
80
POINT TO BE
CHECKED
1.Check if the contents of P133 (minimum frequency) and P134
(maximum frequency) are according to the motor and to the
application.
1.Check the level of the control signal of the reference.
2.Check the programming (gains and offset) at P234 to P240.
1.Check if the used motor meets the application requirements.
1.Check the keypad connections to the inverter.
1.The power supply must be within the following ranges:
200-240 V models:- Min: 170 V
380-480 V models:- Min: 323 V
Table 6.3 (cont.) - Solution for the most frequent problems
CORRECTIVE ACTION
- Max: 264 V
- Max: 528 V