User Manual of SY6000-Z series
Troubleshooting
19
oE2
Over-voltage
in decel
Load inertia
(GD2) is too big
1. To change the decel time
so that it is suitable for the
load inertia;
2. connect braking unit
FLt
Intelligent
power
module
(IPM)
protection
1. Short-circuit
happens in the
upper and lower
bridge arms of IPM;
2. Other reason
causes oversized
transient current.
Please identify reasons,
and reset after taking
approximate measures. If
this is still on, please ask
for technical support.
Poff
Transient
power-cut or
under-voltage
fault
The power voltage
declines or transient
power failure
occurs in operation.
Please check power status
and wiring of input side.
ot
Over-heat of
inverter
1. Cooling fan is
abnormal; 2.
Ambient
temperature is too
high; 3. Air vent is
blocked
1. Check fan operation;
2.Make inverter operating
environment meet the
requirements;
3. Eliminate dust of the air
vent.
oL Over
load
1. motor over-load;
2. V/F feature or
torque
compensation
capacity is
uncertain.
1. Decrease load or replace
larger capacity inverter;
2. Increase or decrease
torque compensation
voltage
Err
E2PROM
write data
error
Errors happen when
E2PROM stores
data.
Please store this parameter
again by using SET key, or
initialize by using E-059
parameter, cut off the
power and then power on.
EF
Emergency
stop
Terminal input,
EMS acts
Confirm the signal
connection.
Remark
: E2PROM errors of wiring data, just display anomaly and don’t trip.
