GE Industrial Solutions AF-300C AC Drive - Manual (Page 85)

AF-300C GEK-85716
47 Operation By Signal Polarity
This function enables the direction of motor rota-
tion to be changed according to the polarity
of the frequency setting voltage.
To operate the with an external frequency
setter, turn on the switch between terminals FWD
and CM. Apply a positive voltage (+ 10 VDC) to
terminal to turn the motor in the forward direc-
tion, or apply a negative voltage to the terminal to
turn it in the reverse
If the switch between terminals REV and CM is on,
a positive voltage applied to terminal
turns the
motor in the reverse direction and a negative volt-
age to the terminal turns it in the forward direction.
This means that the motor rotation direction can be
changed simply by changing the polarity of the
setting voltage.
(zero): Active
(dash): Inactive
DATA PROTECTION
Function 99 Data Protection
Function Code settings can be protected so that
they cannot be changed or lost accidentally. Pro-
tected data cannot be changed without first
cancelling the data protection function. The Data
Protection function can be operated in the follow-
ing two ways:
1. Select Function Code 99 using the SHIFT and
UP ARROW or DOWN ARROW keys. Use the
SHIFT key to set the unit to Data Setting Mode.
If
is protected, is displayed. If it is not
protected, is displayed. Pressing the UP key
displays then pressing the SET Key stores
value in memory and disables a data change.
Pressingthe DOWN key displays”--“, then press-
ing the SET Key stores this value in memory and
enables a data change.
2. While holding down the FAST key, press the
SET key to protect the data or the RESET key to
release data protection. The display shows
when the data cannot be changed (protected)
or when the data can be changed (not pro-
tected).
The current display is held for five seconds after
the keys are released and then returns to the
previous display.
NOTE: In the Fault Monitoring Mode or while the
data display is blinking, the Data Protection function
cannot be selected.
6-I 1
. ON
CAUTION: If a Multi-Step Freauencv selection is
made, the analoa is When this hap-
pens, the rotation direction will be set to
terminals FWD and REV.