
4.SERVO FUNCTION DETAILS B-65270EN/05
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NOTE
If you want to control the brake for an axis with a
two- or three-axis amplifier, specify the brake
control parameter for all axes on the multiaxis
amplifier including the target axis. If an alarm is
generated for any of the axes connected to the
two- or three-axis amplifier, brake control does not
operate effectively.
<4> Emergency stop signal
With the α
i series, a timer for the emergency stop signal is built
into the SVM. While motor activation is kept by brake control,
the timer in the SVM is used to extend the activation time that
lasts until the emergency stop signal operates. Motor deactivation
can be delayed by the SVM for 50 ms to 400 ms. To delay motor
deactivation by brake control for 400 or more, insert a timer in
the contact signal of the emergency stop signal and +24V, and
delay the emergency stop signal to be input to the PSM, as
traditionally done. (For SVM timer setting, see Item (3) "Setting
parameters" below.)
Coil
~
PSM SPM SVM
CX4
ESP
+24 V
CX3
2
3
1
3
:
:
:
:
:
:
(To delay motor
deactivation for
00 ms or more,
a timer is
required.)
MCC
Emergency
stop contact
Fig. 4.10 (b) αi series amplifier
<5> 200/400 VAC
If the 200 VAC or 400 VAC supply to the servo amplifier is cut,
the brake control function cannot operate.
To cause the brake control function to work effectively even at a
power break, apply the power brake machine protection function.
(3) Setting parameters
<1> Brake control function enable/disable bit
#7 #6 #5 #4 #3 #2 #1 #0
1883 (FS15i)
BRKC
2005 (FS30i, 16i)
BRKC (#6) 1: The brake control function is enabled.