Instruction manual

113
4
PARAMETERS
(1) Switch-over mode
During operation, you can change the current operation mode to another operation
mode.
(2) PU operation interlock
PU operation interlock forces the operation mode to be changed to the external
operation mode when the MRS signal switches off. This function prevents the inverter
from being inoperative by the external command if the mode is accidentally left
unswitched from the PU operation mode.
1)Preparation
• Set "7" in Pr. 79 (PU operation interlock).
• Set the terminal used for MRS signal input with any of Pr. 180 to Pr. 183 (input
terminal function selection).
Refer to page 147 for Pr. 180 to Pr. 183 (input terminal function selection).
2)Function
Operation Mode
Switching
Switching Control/Operating Status
External operation to PU
operation
1) Operate the operation panel keys to select the PU operation
mode.
• Rotation direction is the same as that of external operation.
• Set frequency is the same as the external frequency
setting signal value. (Note that the setting will disappear
when power is switched off or the inverter is reset.)
PU operation to external
operation
1) Operate the operation panel keys to select the external
operation mode.
• Rotation direction is determined by the external operation
input signal.
• Set frequency is determined by the external frequency
setting signal.
Note: When terminal assignment is changed using Pr. 180 to Pr. 183, the other
functions may be affected.
Check the functions of the corresponding terminals before making settings.
MRS Signal Function/Operation
ON
Output stopped during external operation.
Operation mode can be switched to PU operation mode.
Parameter values can be rewritten in PU operation mode.
PU operation allowed.
OFF
Forcibly switched to external operation mode.
External operation allowed.
Switching to PU operation mode inhibited.
M4500E.book 113 ページ ２００５年２月２２日 火曜日 午後５時７分