GE Industrial Solutions AF-300C AC Drive - Manual (Page 82)

Frequency Monitor
Function 40 Pulse Freq. Meter Coefficient
Function 50 Analog Freq. Meter Calibration
The inverter output frequency can be monitored
from terminals FM1 (+) and FM2
Set Jumper
the Main Control Card in the position for
an analog meter or in the position for a pulse
type meter.
Function 41 Command Hold (3-wire)
This function enables control by a one-shot (50ms
minimum) RUN/STOP command (FWD and REV
command), External self-sealing circuits can be
omitted.
When this function is selected, multi-step speed
settings from 1 to 3 can be used, but those from 4
to 7 cannot.
NOTE: commend hold, no other commands
will be received a STOP command is given.
Active: control, momentary contacts)
Inactive: control, maintained contacts)
Function 42 Up-Down Control Selection
The frequency can be increased and decreased
using terminals -CM and X2-CM. This function
simulates a motor driven potentiometer.
In addition, if power is shut down, set value is
stored. When operation is started again, inverter
will come up to the stored frequency.
NOTE: The functions of multi-step frequency,
sealing selection, and up-down control use the
same terminals. Thus, there are four possible
combinations of operation.
three functionsca
nor be used
n 6 to 100
Pulse Period = (sec.) f = Freq.
- - - - - - - - - - - - - - - - - -
o Analog output
Calibration
Output
Range:
voltage
1 0 5 %
o v
o u t p u t 100%
frequency
Pulse Signal Width
be 60 msec. or longer
NOTES: When this control function is selected, multistep
speed setting 4 (Function Code 26) can be used, but
the other six settings cannot.
Multi-Step Speed Setting, Command Hold,
and Up-Down cannot be usedsimultaneously
because the same terminals are used for these func-
tions.
If the Up-Down function is selected, external
setting signals (voltage and are
gored.
If Up-Down buttons are pressed at same time,
down will take precedence.
Act. Up-down control Comm-hold sel.
6-8