Saftronics GP5 Series User Manual

FP5/GP5 User’s Manual 75
Chapter 3 - Programming Features
FP5/GP5 Operation
·DC Injection Braking at Start (n068, DCInj Current;
n070, DCInj Time@Start)
This function restarts a coasting motor after first applying it with DC
injection braking. DC injection braking time at start (n070) is set in
units of 0.1 second. DC injection braking current is set in parameter
n068 in units of 1%. When parameter n070 is set to “0”, DC injection
braking is disabled and acceleration starts from the minimum output
frequency.
V/f Pattern Adjustment (n010, V/f Selection)
Set the V/f pattern using parameter n010 as described below. It may be
necessary to change the V/f pattern when using a high-speed motor, or
when special torque adjustment is required in the application.
Set values: “60Hz Preset”: Fixed V/f pattern
“User defined V/f”:Custom V/f pattern can be set
Set the V/f pattern according to the following:
·n010 = “60Hz Preset” (Factory default value)
Set parameter n010 to “60Hz Preset” when a standard 50/60Hz, 230/
460V motor is selected. This setting provides a standard linear V/Hz
pattern. Parameters n011 through n017 cannot be adjusted.
·n010 = “User defined V/f” (Custom V/f pattern)
Set parameter n010 to “User defined V/f” when a variable torque pat-
tern is required. Parameters n011 through n017 can then be adjusted
manually to customize a special V/f pattern. The default settings for
parameters n011 through n017 when n010 = “User defined V/f” com-
prise the standard variable torque pattern.
Figure 45 DC Injection Braking at Starting
n016
Min. Output Frequency
n070
DC Injection Braking
Time at Start
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Saftronics GP5 Series Specifications

General

Brand	Saftronics
Model	GP5 Series
Category	Inverter
Language	English