Mitsubishi Electric MELDAS MDS-B-SVJ2 Series, Технические характеристики и инструкция по эксплуатации

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Chapter 5 Adjustment
5-29
(2) Vertical axis lift up control
Even when the vertical axis drop prevention control is applied, the axis will drop several µm due
to the mechanical play of the motor brakes. This function raises the axis, before the brakes are
applied, by a motor angle of 1.44deg. to retract the vertical axis upward during an emergency stop
or instantaneous power failure.
<Setting and adjustment methods>
①
Adjust "5.4.2 (1) Vertical axis drop prevention control".
②
Increase the vertical axis drop prevention time (SV048) by 100msec more than the value
adjusted in step
①
.
③
Turn SV027 bit 0 ON.
④
Set the unbalanced torque. (This is the same setting value as for adjustment of the lost motion
compensation.)
No. Abbrev. Parameter name Unit Explanation Setting range
The vertical axis lift up control starts with the following parameter.
F E D C B A 9 8 7 6 5 4 3 2 1 0
aflt zrn2 ovs lmc vfct zup
bit Meaning when "0" is set. Meaning when "1" is set.
0 zup Vertical axis lift up control stop
Vertical axis lift up control start
SV027
SSF1
Servo function
selection 1
SV032 TOF Torque offset
Stall %
(Rated
current
%)
Set the unbalanced torque.
The compensation direction is determined by this parameter's
sign.
When set to 0, the vertical axis lift up control will not be
executed.
–100 ~ 100
SV048 EMGrt Vertical axis drop
prevention time
msec
The brake operation will be delayed 100msec from the normal
operation, so set a value of 200msec or more.
0 ~ 2000
CAUTION
1. This function is valid for the vertical type machining center's Z axis. This
function basically cannot be used with the horizontal type machining
center's Y axis or lathe's X axis as collisions could occur. Always confirm
the machine's working conditions before using this function.
2. When operating the motor brakes with an external sequence, use this
function 100msec after the emergency stop input in the same manner as
the servo amplifier output signal (MBR).
Vertical axis lift up control sequence
OFF
ON
Emergency stop (EMG)
ON
OFF
Ready ON signal (READY)
0 100 200 300
Time (msec)
OFF
ON
Motor brake control output (MBR)
Contactor control output (MC)
ON
OFF
Motor position
Axis
rise
1.44deg. (Raise 40µm when PIT = 10
When this function is valid, the brake operation is
delayed by 100msec
When SV048 = 200