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If upgrading from the ALPHA5 Series, by setting "0000" to "0005", the values will be the
same as those for ALPHA5 parameter settings PA2_61 to 63.
In this case, the deceleration operation when performing a forced stop or following OT
detection will be fixed at rapid deceleration.
Furthermore, the action sequence following either a minor or major failure alarm will be
based on the PA2_62 setting.
(With the ALPHA5 Series, the dynamic brake is applied and the motor decelerates when a
major failure alarm occurs, regardless of the PA2_62.)
The STO operation is based on the operation setting when PA2_61 servo-on is OFF.
(When servo-on is OFF, however, the operation when decelerating will be "dynamic brake operation"
when "Rapid deceleration" is set.)
PA2_64 Torque keeping time to holding brake
No.
Name
Torque keeping time to
64
holding brake
Assign the "brake timing (function No. 14)" signal to the output signal.
The reference value of this parameter indicates the delay taken from shutoff of servo-on (function No.
1) CONT input signal to free-run.
Specify a time larger than the one taken from excitation of the brake to actual brake application.
The brake timing signal is turned off when servo-on is turned off.
PA2_65 Braking resistor selection
No.
Name
65
Braking resistor selection
Select the braking resistor.
If the reference value is 1, the temperature of the braking resistor is calculated inside the amplifier and
monitored as a regenerative thermal value. 100 [%] indicates an overheated internal braking resistor
(RH1).
To install an external braking resistor for elevator operation or high operation frequency, set at 2.
If the reference value is 2, connect the thermistor of the external resistor to the external braking resistor
overheat (function No. 34).
Because of a normally closed contact, shutoff indicates an overheated external braking resistor (RH2).
Setting range
0.00 [s] to 9.99 [s]
Setting range
0: None
1: Internal resistor 2: External resistor
Extended Function Setting Parameters
CHAPTER 4 PARAMETER
Default
Change
value
0.00
Always
Default
Change
value
1
Power
4
4-87
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