PDL MICRODRIVE Series User Manual

Microdrive Series Instruction Manual
4201-109 Rev I
88
76 CURRENT LIMIT SOURCE
Screen 76 I LIM SRC = 00
Description CURRENT LIMIT SOURCE
Options 00/01/02
FUNCTION The current limit may be set from one of three
sources as defined below:
No. 00
Name INTERNAL
Notes Current limit is defined by the parameter set in
Screen 18.
No. 01
Name 010 V
Notes Current limit is set by the value obtained from
the analogue 010V contol input.
10V corresponds to the current limit level set
by Screen 18.
No. 02
Name 420mA
Notes Current limit is set by the value obtained from
the analogue 420mA control input.
20mA corresponds to the current limit level set
by Screen 18.
SETTING UP If 010V or 420mA source is selected, ensure
that the feedback source (Screen 65) and the
reference source (Screen 64) are not set to
the same source.
77 TORQUE BOOST MODE
Screen 77 AUTOBOOST = Y
Description SELECT TORQUE BOOST MODE
Options [Y]ES/[N]O
FUNCTION In order to obtain full torque at low frequency,
voltage boost must be applied. This option
permits configuration for automatic boost (Y)
or fixed boost (N). Refer to Screen 14 for set-
up of boost levels.
SETTING UP For normal single motor operation, Autoboost
provides best performance and should be left
set to [Y]ES. For multiple motor operation,
select Autoboost to [N]O.
Autoboost does not operate at zero frequency,
therefore applications which are required to
produce torque at zero frequency (e.g., hoists)
must have Autoboost set to [N]O.
Autoboost automatically varies the boost level
according to the load condition, as a ratio of the
level set by Screen 14. Screen 14 must still be
set to a level appropriate to the motor being
used.
78 RUN AT MINIMUM FREQUENCY
Screen 78 RUN AT MIN FR = N
Description RUN AT MINIMUM FREQUENCY MODE SELECT
Options [Y]ES/[N]O
FUNCTION When run at minimum frequency is enabled
(Y), the Microdrive will continue to run even
when the reference frequency is set below
the minimum frequency level (MIN FR - refer to
Screen 21). However, the Microdrive will
operate at the minimum frequency. If run at
minimum frequency is disabled (N) then the
Microdrive will stop and wait in the ready mode
if the reference frequency is reduced below
the minimum frequency.
The inch command will override the minimum
frequency limitations.
SETTING UP If the Microdrive is required to run (at the
minimum frequency) when the reference
frequency is below the minimum frequency
then select [Y]ES.
If the Microdrive is required to stop and wait in
the ready mode when the reference
frequency is below the minimum frequency
then select [N]O.
4807−241 Rev C
REFERENCE SET POINT 2 (FR F2)
REFERENCE SET POINT 1 (FR F1)
MIN FREQUENCY
MAX FREQUENCY
MINIMUM FREQUENCY ENABLED
−100Hz
−20Hz
−5Hz
0Hz
5Hz
4mA
0V
EXAMPLE. +60 TO −20Hz INVERSE
60Hz
100Hz
CONTROL WITH RUN AT
ASYMETRIC BI−DIRECTIONAL
= −20Hz
=
=
60Hz
5Hz
= 100Hz
20mA
10V
76
77
78

PDL MICRODRIVE Series Specifications

General

Brand	PDL
Model	MICRODRIVE Series
Category	Controller
Language	English