YASKAWA varispeed G7 CIMR-G7B series User Manual

Protective and Diagnostic Functions
7-5
FAN
内部风扇
故障
Inverter’s Cooling Fan Fault
An Inverter’s cooling fan fault was
detected, and the Inverter-overload
protection was activated based on the
internal electric thermal value.
This fault is detected when L8-32 is
set to 0.
The Inverter continued running with
an overload after the cooling fan
stopped.
Replace the cooling fan. (Contact
our sales representative.)
OH3
电机 过热
警告
Motor Overheating Alarm
The Inverter will stop or will continue
to operate according to the setting of
L1-03.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
Check the V/f characteristics.
Check the Motor Rated Current
(E2-01).
OH4
电机 过热
警告 2
Motor Overheating Fault
The Inverter will stop according to the
setting of L1-04.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
Check the V/f characteristics.
Check the Motor Rated Current
(E2-01).
RH
制动电阻
过热
Installed Braking Resistor Over-
heating
Braking resistor protection function
set in L8-01 has operated.
The deceleration time is too short and
the regenerative energy from the
motor is too large.
• Reduce the load, increase the
deceleration time, or reduce the
motor speed.
• Change to a Braking Resistor
Unit.
RR
制动晶体
管故障
Internal Braking Transistor Fault
The braking transistor is not operating
properly.
• The braking transistor is damaged.
• The Inverter’s control circuits are
faulty.
• Try turning the power supply
off and on.
• Replace the Inverter if the fault
continues to occur.
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions

YASKAWA varispeed G7 CIMR-G7B series Specifications

General

Brand	YASKAWA
Model	varispeed G7 CIMR-G7B series
Category	Inverter
Language	English