102
Parameter Setting
Standard Default Setup: [ ]
PrNo.
Parameter Name
Function/Content
Unlike Pr6A, Pr6B sets time from when the motor is de-energized (servo free) until
the brake release signal (BRK-OFF:CN X5 pin 11) turns off (i.e., brake retained),
when Servo-OFF is activated while the motor is still rotating.
Also see timing chart “Servo-ON/OFF Operation When the Motor is Stopped” on
Page 34 of Preparation edition.
If you install a regenerative resistor externally, set this parameter to any value other
than 0 or 3 and connect the regenerative resistor between P (pin 5) and B (pin 3) of
the connector CN X1.
6B
6C
Mech. break action
set-up at motor in
motion
External regenera-
tive discharge
resister selection
0 -
100
[0]
0 - 3
<Note>
When you use an external regenerative resistor, be sure to install such an
external safeguard as a temperature fuse, etc.
Otherwise, protection of a regenerative resistor may be lost, resulting in ab-
normal heat generation and burnout of the regenerative resistor.
<Cautions>
Do not touch an external regenerative resistor.
Otherwise, an external regenerative resistor will be hot and may cause burn
injury.
Pr06=2 The parameter sets a 1st overspeed level when torque limit switching input
is enabled. If rotation speed of the motor exceeds this setting when the 1st torque
limit is selected, overspeed error will be generated. The unit is [r/min].
This parameter will be invalid when the torque limit switching input is disabled.
Pr06=2 The parameter sets a 2nd torque limit when torque limit switching input is
enabled. This setting will be a limit value of the motor output torque when the 2nd
torque limit is selected. Set this in terms of [%] to rated torque of the motor.
This parameter will be invalid when the torque limit switching input is disabled.
Pr06=2 The parameter sets a second excessive position deviation range when
torque limit switching input is enabled. The unit is [256 x resolution].
This parameter will be invalid when the torque limit switching input is disabled.
Pr06=2 The parameter sets a 2nd overspeed level when torque limit switching
input is enabled. If rotation speed of the motor exceeds this setting when the 2nd
torque limit is selected, overspeed error will be generated. The unit is [r/min].
This parameter will be invalid when the torque limit switching input is disabled.
70
71
72
73
1st over-speed
level set-up
2nd torque limit
set-up
2nd position over-
deviation set-up
2nd over-speed
level set-up
0 - 6000
[0]
0 - 500
[0]
1 - 32767
[1875]
0 - 6000
[0]
<Remarks>
For any use example of hit-and-stop initialization or press load pressing control using Pr70 to Pr73, see Pages 207 and 208 of
Reference edition.
Range of
Settings
• The parameter is set to prevent
deterioration of the brake to be cause
by rotation of the motor.
• In servo-off operation while the motor
is still running, time TB shown in the
right figure is time set by Pr6B or time
before rotation speed of the motor falls
below about 30r/min, whichever is
shorter.
• Pr6B is displayed in terms of (setting)
x 2ms.
• Refer to the timing chart of “Servo-ON/
OFF Operation When the Motor is
Rotating” on Page 34.
T
B
ON
SRV-ON
BRK-OFF
Motor speed
Released
OFF
Retained
Motor energized
Energized
De-energized
30 r/min
<Note>
• An optional external regenerative resistor has a built-in temperature fuse for safety reasons. The built-in
temperature fuse may be disconnected depending on heat dissipation conditions, range of use temperatures,
supply voltage, and fluctuations of load.
• Configure the machine so that surface temperature of a regenerative resistor is kept below 100˚C, even when
regeneration is apt to occur and the machine is placed under poor conditions (i.e., high supply voltage, high
load inertia, and short deceleration time). Also be sure to check that it can run properly.
Settings
0
1
2
Regenerative
resistors to be used
–
Externally instaled
resistor
Externally installed
resistor
–
Protection against overload of
regenerative resistors
As regeneration processing circuit does not
run, a built-in condenser handles all of
regenerative power.
With the operating limit of an externally
installed resistor set to 10% duty, activate
protection against overload of regenerative
resistors (alarm code 18).
The protection against regenerative overload
does not work.
As regeneration processing circuit does not
run, a built-in condenser handles all of
regenerative power.
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