Optidrive
ODV
‐
2
User
Guide
Revision
1.00
www.invertek.co.uk
16
6.1.2.
Minimum
and
Maximum
Frequencies
/
Speeds
Optidrive
HVAC
units
are
factory
set
to
operate
the
motor
from
zero
up
to
base
speed
(50
or
60Hz
output).
In
general,
this
operating
range
is
suitable
for
a
wide
range
of
requirements,
however
in
some
cases
it
may
be
desired
to
adjust
these
limits,
e.g
where
the
maximum
speed
of
a
fan
or
pump
may
provide
excessive
flow,
or
where
operation
below
a
certain
speed
is
never
required.
In
this
case,
the
following
parameters
can
be
adjusted
to
suit
the
application
:
‐
P1
‐
01
Maximum
Frequency
.
In
general
this
should
match
the
motor
rated
frequency.
If
operation
above
this
frequency
is
desired,
confirmation
from
the
motor
manufacturer,
and
the
manufacturer
of
any
connected
fan
or
pump
should
be
sought
that
this
is
permissable,
and
will
not
cause
damage
to
the
equipment.
P1
‐
02
Minimum
Frequency.
A
suitable
minimum
can
be
set
to
prevent
the
motor
operating
at
low
speed,
which
may
cause
the
motor
to
overheat.
In
some
applications,
such
as
a
pump
circulating
water
through
a
boiler,
it
may
be
necessary
to
set
a
speed
to
ensure
the
boiler
does
not
run
dry
during
operation.
