Mitsubishi Electric Freqrol-A100 Instruction Manual page 148

Note: 1.
2.
3.
4.
5.
6.
7.
8.
9.
When the signal across terminals MRS and SD is
switched on and the value of Pr. 79 is then changed
to other than 7 in the PU operation mode, that signal
functions as the ordinary signal (output stop), not as
the edit enable signal. Also, as soon as the value of
Pr. 79 is changed, the ordinary mode switching is
carried out.
When Pr. 79
=
7, the link operation (computer link, PC
link) function cannot be used. Also, the inverter is put
in the external operation mode if Pr. 125
=
1 (link
mode at power on).
If the signal across STF or STR and SD is on, the
external operation mode cannot be switched to the PU
operation mode when the signal across MRS and SD
is on.
When 7 is set in Pr. 79 and the signal across terminals
MRS and SD is switched on and is then switched off
during PU operation, the inverter is switched to the
external operation mode independently of the external
terminal (STF, STR) signal state. Therefore, when the
signal across terminals MRS and SD is switched off
with either of the STF and STR signals on, the motor
is run in the external operation mode.
The ordinary MRS function is invalid for the PU opera-
tion mode.
The above description all applies to a case where Pr.
17
=
0 or 1 (MRS terminal normally disconnected).
When Pr. 17
=
2 or 3, ON changes to OFF and OFF
changes to ON in the above table and description.
When the PU operation mode is forcibly switched to
the external operation mode, the PU is internally reset
once to secure the monitor screen.
The above function is not available for the FR-PUO1 E
and "7" cannot be written to Pr. 79.
At the occurrence of any alarm, press the STOP key
in the PU operation mode to reset the inverter. The
inverter cannot be reset in the external operation
mode and must be reset in the PU operation mode.
10.This function is not activated when the commercial
power supply-inverter switching sequence is selected.