Q2BYG808MD
Driver
User’s
Manual
-38-
Chapter
6
FAQ
6.1
Motor
selection
Q2BYG808MD
is
suitable
for
4,
6,
8
‐
wire
two
‐
phase
hybrid
stepping
motor.
Please
select
appropriate
motor
and
drive
to
ensure
optimal
motor
running.
(1)
It
is
known
from
the
torque
‐
frequency
characteristics
of
stepper
motor,
the
output
torque
decreases
when
the
motor
speed
increases.
Generally
under
light
load,
the
maximum
operating
speed
is
below
15
rev/
sec;
under
heavy
load,
the
maximum
operating
speed
is
about
10
rev/
sec.
(2)
When
the
stepper
motor
has
been
selected,
select
the
stepper
motor
model
of
appropriate
torque
according
to
the
load
size.
(3)
During
working,
the
system
transmission
ratio
can
be
changed
through
the
gear
box
and
timing
belt
to
adjust
the
relationship
between
the
output
torque
and
load
speed.
(4)
Increase
the
supply
voltage
of
the
drive
to
improve
the
speed
of
the
stepper
motor;
increase
the
operating
current
of
the
drive
to
increase
the
torque
of
the
stepper
motor;
increase
the
number
of
subdivisions
of
the
stepper
motor
to
improve
the
precision
and
smooth
operation
of
the
stepper
motor
and
reduce
vibration
and
noise.
6.2
Troubleshooting
Failure
Possible
cause
Solution
Power
LED
is
off
Power
system
failure
Check
the
power
supply
line
Supply
voltage
is
low
Increase
the
supply
voltage
Alarm
LED
is
on
Motor
wire
is
connected
improperly
Check
connection
Voltage
is
too
high
or
too
low
Check
the
power
supply
Overcurrent
Check
the
power
supply
Motor
does
not
run
Not
powered
Check
the
power
supply
circuit,
and
power
on
Motor
wire
is
connected
improperly
Check
connection
Protection
circuit
operates
Re
‐
power
