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Protective functions
Protective functions
Description of trip can be displayed only when the Digital key pad (option) or PC is con-
nected. Protection function works even when the Digital key pad or PC is not connected,
but it is not displayed.
Trip
Protective
Description
number
item
The brushless amplifier trips
1
Sensor error *
when trouble of CS sensor
signal is detected.
When the internal DC voltage is
below specified value, operation
is stopped; when voltage is
recovered, operation is started
Under voltage
again. (This is not trip, and no
—
warning
trip output is made.)
(default)
• Trip can be set by parameter
50 to YES.
Product of 100 V: Approx DC100 V,
Product of 200 V: Approx DC200 V
• The brushless amplifier trips
when internal DC voltage is
below specified value only if
Undervoltage
2
trip is set by parameter 50 to
error
YES.
100 V product: Approx DC100 V,
200 V product: Approx DC200 V
The brushless amplifier trips
when internal DC voltage
(voltage of power supply
Overvoltage
3
smoothing capacitor) rises and
error
exceeds specified value.
Product of 100 V: Approx DC200 V,
Product of 200 V: Approx DC400 V
Overload
When the load factor reaches
warning
—
100% overload warning level,
(Electronic
the monitor display flashes.
thermal)
Overload error
The brushless amplifier trips
4
(Electronic
when motor torque is output
thermal relay)
continuously above 115%.
The brushless amplifier trips
Overspeed
when rotation speed (actual
5
error
speed) exceeds specified value.
Approx 6000 r/min
32
Display on
Measure
Digital key pad
It may be a malfunction
E-CS
due to external noise.
L
Investigate the condition of
wiring and circumstances
of power supply.
E-LV
If the motor should trip in
running, too short decel-
eration time is one of the
E-OV
causes. Adjust deceleration
time.
5-digit
Lower the load factor
LED
below 100% by reducing
flashes.
load, changing operation
pattern or increasing motor
capacity.
THr
Check for overshooting due
to too short acceleration
E-OS
time.
Trip
Protective
Description
number
item
The brushless amplifier trips
Overcurrent *
8
when the motor current exceeds
error
specified current.
The brushless amplifier trips
when the temperature in control
Overheat
9
section rises above specified
error
value.
Approx. 105 °C
The brushless amplifier trips
External
10
when external forced trip input
forced trip
becomes active.
The brushless amplifier trips
Setting change
when any important parameter
11
such as " 30 Run command
warning
selection" is changed.
Parameter
in " 54 Parameter
Select
30
initialization
initializing". Turn off power and
then on to trip.
display
90
Parameter
*
Parameter data saved in
EEPROM is abnormal.
91
error
The brushless amplifier
Other
CPU error
*
trips when trouble of control
number
microcomputer is detected.
* To cancel the trip when the protection function with * is activated, please perform the
method of (1) on page 34.
Overload protection
1000
time characteristics
100
10
Measure
It may have been caused
by excessive acceleration/
deceleration setting or gain
setting.
Set the longer acceleration/
deceleration time and the
smaller gain.
If this trip should occur as
soon as the unit is started,
It may be breakdown.
Check the ambient tem-
perature and cooling condi-
tion of brushless amplifier.
Check the load factor and
operation pattern.
If an external thermal
element is used, check the
cause of temperature rise.
This is not abnormal.
Reset trip in order to make
change effective.
This is not abnormal.
The parameter was
initialized.
It is clearable only by
power supply re-injection.
E-UPr: recheck and reset
all parameters.
E-SPr: internal parameter
error.
It may be breakdown.
It may have been caused
by malfunction due to
external noise.
Investigate for noise source.
100
110
120
130
140
150
Torque (%)
Display on
Digital key pad
E-OC
E-OH
E-OL
CAU
- - - -
E-UPr
E-SPr
Err
33
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