Table of Contents
Advertisement
List of protective functions
Display
Trip
on the
number
Protective function
digital
(RS485)
keypad
Undervoltage error
2
E-LV
(E-LV)
Overvoltage error
3
E-OV
(E-OV)
LED
Overload warning
－
flashes
(Electronic thermal)
Overload error (Elec-
4
THr
tronic thermal relay)
(THr)
Overspeed error
5
E-OS
(E-OS)
Position error
6
E-POS
(E-POS)
∗
Position error
7
E-PO
counter overflow
(E-PO)
∗
Overcurrent error
8
E-OC
(E-OC)
Overheat error
9
E-OH
(E-OH)
External forced trip
10
E-OL
(E-OL)
∗
Setting change
11
CAU
warning (CAU)
RS485 communica-
tion error
12
E-485
(E-485)
Command execution
error
20
E-rU
(E-rU)
Causes
The amplifier trips when internal DC volt-
age (voltage of smoothing capacitor of
power supply) is below specified value.
Product of 100 V: Approx DC85 V
Product of 200 V: Approx DC170 V
The amplifier trips when internal DC volt-
age (voltage of smoothing function of
power supply) rises and exceeds speci-
fied value.
Product of 100 V: Approx DC205 V
Product of 200 V: Approx DC410 V
When load factor exceeds 100, the elec-
tronic thermal relay operates and monitor
display flashes. It is an alarm for elec-
tronic thermal trip.
The motor trips when torque reference is
output continuously
above 115.
The motor trips when rotation speed (ac-
tual speed) exceeds specified value.
Approx 6000r/min
The motor trips when position error (dif-
ference between command position and
actual position) is greater than Pr39 × 8
[pulses].
The motor trips when the position error
exceeds 8388607 [pulse].
The amplifier trips when the motor cur-
rent exceeds specified current.
The motor trips when the temperature in
control section rises above specified
value.
Approx 105 ℃
The motor trips when external forced trip
input turns on.
It occurs when parameter copying func-
tion on digital keypad is completed nor-
mally.
Also, when STOP key on digital keypad
is pressed, the motor trips and stops.
The motor trips when communication er-
ror of RS485 communication function oc-
curs.
The motor trips when data is abnormal in
executing an operation instruction (set-
ting speed is 0, and travel distance is
32767 rotations or more).
№ SX-DCT00221 -35-
Countermeasure
Investigate the condition of wiring and
power supply.
It is possible that deceleration time is too
short. Set longer deceleration time.
Not compatible with continuous lowering
operation.
Reduce the load.
Check the load factor in monitor mode.
Investigate the cause of overload, and
reduce the load, change the operating
pattern by making acceleration and de-
celeration time longer, or apply design to
increase the capacity of motor.
Ensure that the actual speed does not ex-
ceed rated rotation speed, such as over-
shooting by unmatching between load
and gain.
Check the parameter again and adjust
gain.
Check the parameter again and adjust
gain.
1 Excessive acceleration/ deceleration
setting is possible.
Set longer acceleration/ deceleration
time.
2 Failure of internal circuit is possible
Check the ambient temperature and
cooling condition of motor. Check the
load factor. If the ambient temperature is
low enough, and the protection occurs
soon after power-on, failure is possible.
Turn off external forced trip input, and re-
set tripping.
It is not abnormal. Execute trip reset.
Check for noise problem in the vicinity.
(See "Information − Communication" on
page 65 for detail.)
Check the setting of parameter.
Panasonic Corporation
Advertisement
Table of Contents
