Dc Injection Braking - Saftronics FP5 Series User Manual

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Chapter 3 - Programming Features
FP5/GP5 Operation
· Stall prevention during deceleration (n072, StallP Decel Sel)
To prevent overvoltage during deceleration, the inverter automatically
extends the deceleration time according to the value of main circuit DC
voltage. When using an optional braking resistor for the FP5/GP5,
set parameter n072 to"0".
LED Setting
0
1

DC Injection Braking

· DC Injection Braking Current (n068, DCInj Current)
DC injection braking current can be set in increments of 1%.
(100% = inverter rated current)
· DC injection Braking Time at Stop (n069, DCInj Time @ Stop)
DC injection braking time at stop can be set in increments of 0.1 sec-
ond. When parameter n069 is set to "0", DC injection braking at stop-
ping is disabled.
When coast to stop is selected in the stopping method selection (n004),
DC injection braking at stop is disabled.
54
LCD Setting Stall Prevention During Deceleration
Disabled Disabled (when optional braking resistor mounted)
Enabled Enabled (factory default)
Frequency
Extends the deceleration time to
prevent overvoltage fault.
Time
Set Deceleration Time
Figure 22 Stall Prevention During Deceleration
n016
Min. Output Frequency

DC injection Braking

Time at Stop
Figure 23a DC Injection Braking Time at Stop
n069
FP5/GP5 User's Manual