User Guide

60 Parameter Descriptions Honeywell
10
Switching frequency for SmartVFD Compact: 1.5…16 kHz.
1.17 B
RAKE CHOPPER
Note! An internal brake chopper is installed in three phase supply MI2 and MI3
size drives
0 = No brake chopper used
1 = Brake chopper used in Run state
2 = Used in Run and Stop state
When the frequency converter is decelerating the motor, the energy stored to
the inertia of the motor and the load are fed into an external brake resistor, if
the brake chopper has been activated. This enables the frequency converter
to decelerate the load with a torque equal to that of acceleration (provided that
the correct brake resistor has been selected). See separate Brake resistor in-
stallation manual.
10.2 START/STOP SETUP (CONTROL PANEL: MENU PAR -> P2)
2.1 CONTROL PLACE
With this parameter, the user can select the active control place. The selec-
tions are:
1 = I/O terminal
2 = Keypad
3 = Fieldbus
Note: Local/Remote control mode can be toggled by pressing the navigation
wheel for 5 seconds. P2.1 will have no effect in local mode.
Local = Keypad is the control place
Remote = P2.1 defines the control place
2.2 START FUNCTION
The user can select two start functions for SmartVFD Compact with this pa-
rameter:
0 = Ramp start
The frequency converter starts from 0 Hz and accelerates to the set
frequency reference within the set acceleration time (P4.2). (Load in-
ertia or starting friction may cause prolonged acceleration times).