Periodicity; Control Loop - Newport MM4006 Manual

MM4006
2.2.2.25
H O M E
2.2.2.26
EDH0181En1020 — 03/03

Periodicity

This mode enables to display periodically (for example 0 to 360°) for cer-
tain of rotary mechanical families (default, RV, (M-)URM).
Press the
then the
press the
period with the numeric keypad and then press the
this value. Press
changes.
Processing of an axis infinite movement is possible only if a periodicity
has been defined, and only for rotary stages.
JOG
AXES
1 2 3
1/5
1 : - 3 . 3 5 6 m m 4 5 6
Axis Setup
2/6
2 : 1 2 . 3 4 5 D e g
3 : 2 . 3 4 5 6 m m
7 8 9
4 : U n c o n n e c t e d
3/7
S e l e c t a c t i o n
.
M A N U A L M O V E - P R O G . 0
4/8
JOG
AXES
1 2 3
→
1/5
4 5 6
2/6
7 8 9
3/7
- 0 .
4/8
CD — Set periodical display mode.

Control Loop

The MM4006 controller has the capability to operate both DC and stepper
motors in closed loop or open loop configurations. This is an important
feature, especially for the stepper motors. As described in the tutorial sec-
tion, when operating a stepper motor in a mini- or micro-stepping mode,
the actual position can vary a few steps when under load. If the servo loop
in closed with an encoder, position errors are corrected both during the
motion and at stop.
All stages offered with the MM4006 are equipped with an encoder, includ-
ing those driven by a stepper motor. The recommendation is to always use
the closed-loop mode.
It is not recommended to operate a DC motor in open loop. This mode is
used only at the factory to output a constant DC voltage to the motor dri-
ver for testing and calibration purposes.
If you need to change the control loop type, press the
fy the current setting. Press the
Press
VALID
menu.
key to advance to the next parameter. Press
UP
key to select
CHANGE
key. If periodicity is
VALID
two times and then the
QUIT
→ →
MODIFY UP
→ →
VALID QUIT QUIT
CHANGE
to accept the new loop type and return to the previous
2.30
or . To accept this entry,
YES NO
, enter the displacement
YES
VALID
YES
NOTE
→ →
MODIFY CHANGE
→ →
YES QUIT
NOTE
MODIFY
key to select a different loop type.
Local Mode
and
MODIFY
key to accept
key to save
→ →
VALID
key to modi-