- App. 56 -
PrNo.
Parameter
Range Function
description
Defines the duration from OFF of the brake release signal (BRK-
OFF) (i.e. brake engaged) to the shutdown of motor current (servo
free) in transition to Servo-OFF during the motor in motion, not
during the halt as handled by Pr6A.
See also "Timing chart for Serve-ON/OFF during the operation of
the motor" in Appendix.
Defines whether the internal regenerative discharge resistor is
used, or an external regenerative discharge resistor is installed
(between P and B2 terminals on the terminal block) with the inter-
nal resistor disconnected.
6B
6C
Mechanical
brake action
set-up
at motor in
motion
External
regenerative
discharge
resistor
selection
0 ~
100
[0]
0 ~ 2
[0]
Details of Parameters
Value
0
1
2
Regenerative discharge resistor
Internal resistor
External resistor
External resistor
Over-regenerative power protection
The protection operates for the internal resistor.
The protection operates for the external resistor
whose operating limit is 10% of the duty.
No protection
• This parameter is necessary for avoiding the degra-
dation of the brake due to the rotation of the motor.
• The value of Tb is the value of Pr6B or the time
needed for decreasing the motor revolution to about
30 rpm, whichever is smaller.
• Pr6B = (Entry) x 2 ms
T
B
On
SRV-ON
BRK-OFF
Motor velocity
(r/min)
Brake
released
Off
Brake
engaged
Motor
current
Energized
Free
(not energized)
30 r/min
Approy.
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