GE Industrial Solutions AF-300C AC Drive - Manual (Page 78)

AUXILIARY FUNCTION CODES
Functions 47
DC Brake
Function 20 DC Brake Start Frequency
Function 21 DC Brake Voltage
Function 22 DC Brake Time
Brake Start Freq.: 0.0, 0.5 to 60 hz.
Brake Voltage:
Brake Time:
0 to seconds
Brake Duty Cycle: 5% maximum
The DC brake is applied when command is
given and the inverter output frequency is at or
below the DC brake start frequency.
-- If the motor/load inertia is so large that the rota-
tion is not stopped aftertheset DC brake time (10
seconds maximum), the motor/load will coast
until stopped.
-- When DC brake is not used, set the Brake Start
Frequency to
Frequency Setting Selections 7
Function 23 Multi-Step frequency 1
Function 24 Multi-Step frequency 2 (MSS2)
Function 25 Multi-Step frequency 3 (MSS3)
Function 26 Multi-Step frequency 4 (MSS4)
Function 27 Multi-Step frequency 5 (MSS5)
Function 26 Multi-Step frequency 6
Function 29 Multi-Step frequency 7
External contact signals allow a selection of seven x 2 - w
speeds.
Each step speed can be set between 0.5 and 400
HZ.
The rate of change of the output frequency be-
tween each step is adjustable by the
time setting.
NOTE: Multi-step frequency overrides
frequency reference signals.
Relationship Between Terminals and
Multi-Step 1 to 7
Fun. Code
off On On Off Off On Or
off Off Off On On On Or
4
6-4