SD710 Series Servo Drive User Manual Chapter 5 Commissioning and Operation
6
Negative
command
Facing the shaft end,
rotate clockwise (CW)
PA
PB
Phase A lags phase B
by 90°
PA
PB
Phase A overruns phase
B by 90°
Pn002=1
Positive
command
Facing the shaft end,
rotate clockwise (CW)
PA
PB
Phase A lags phase B
by 90°
PA
PB
Phase A overruns phase
B by 90°
Negative
command
Facing the shaft end,
rotate counterclockwise
(CCW)
PA
PB
Phase A overruns phase
B by 90°
PA
PB
Phase A lags phase B by
90°
When the "Rotation direction selection" is changed, the pattern of the servo driver output pulse and the positive and
negative monitoring parameters do not change.
5.1.6 Holding Brake Setting
A holding brake is a mechanism that prevents the servo motor shaft from moving when the servo drive is in a non-
operating state, and keeps the motor locked in position so that the moving part of the machinery does not move due to
self-weight or external forces.
Servo motor
Brake device
Mechanical
moving parts
Prevent movement due to
self weight when the
power supply is off
Brake device
Mechanical
moving
parts
Prevent the worktable from
moving due to external force
External
force
Servo motor
a. Hold brake motor for vertical axis b. Hold brake motor for horizontal axis
Figure 5.4 Schematic diagram of the use of the brake motor
Note
