Filter
Top Products
158
Errors (Alarms)
*2. Functions only when any of Pr. 60 to Pr. 63, Pr. 65 and Pr. 505 (input terminal function
selection) is set to OH.
Operation Panel
Indication
0HT FR-PU04 OH Fault
Name External thermal relay (*2)
Description
If the external thermal relay designed for motor overheat protection or the
internally mounted temperature relay in the motor switches on (contacts
open), the inverter output is stopped. If the relay contacts are reset
automatically, the inverter will not restart unless it is reset.
Check point
• Check for motor overheating.
• Check that the value of 7 (OH signal) is set correctly in any of Pr. 60 to Pr.
63, Pr. 65 and Pr. 505 (input terminal function selection).
Corrective action Reduce the load and operating duty.
Error code H90
Operation Panel
Indication
OLT FR-PU04 Stll Prev STP
Name Stall prevention (overload)
Description
The running frequency has fallen to 0 by stall prevention operation
activated. OL appears while stall prevention is being activated.
Check point Check the motor for use under overload.
Corrective action Reduce the load weight.
Error code H60
Operation Panel
Indication
PE FR-PU04 Corrupt Memory
Name Parameter storage device alarm
Description
A fault occurred in parameters stored.
(Example: E
2
PROM fault)
Check point Check for too many number of parameter write times.
Corrective action Please contact your sales representative.
Error code HB0
Operation Panel
Indication
PUE FR-PU04 PU Leave Out
Name PU disconnected
Description
Stops the inverter output if communication between inverter and PU is
suspended, e.g. if the PU is disconnected with "1" set in Pr. 993 "PU
disconnection detection", or if a setting error or connection (connector)
fault occurs when the RS-485 communication function is used.
Check point
• Check that the FR-PU04 is fitted securely.
• Check the setting of Pr. 993 "PU disconnection detection".
• Check that the connector is plugged securely.
• Check that the communication setting is correct.
Corrective action Fit the FR-PU04 securely.
Error code HB1