Mitsubishi FR-E 500 Instruction Manual page 127

2) Function
MRS Signal
ON
OFF
<Function/operation changed by switching on-off the MRS signal>
Operating Condition
Operation
Status
mode
During stop
PU
During
operation
During stop
External
During
operation
Note: 1. If the MRS signal is on, the operation mode cannot be switched to the PU
operation mode when the start signal (STF, STR) is on.
2. The operation mode switches to the external operation mode independently
of whether the start signal (STF, STR) is on or off.
Therefore, the motor is run in the external operation mode when the MRS
signal is switched off with either of STF and STR on.
3. When the protective function (major fault) is activated, the inverter can be
reset by pressing the
4. Switching the MRS signal on and rewriting the Pr. 79 value to other than "7"
in the PU operation mode causes the MRS signal to provide the ordinary
MRS function (output stop). Also as soon as "7" is set in Pr. 79, the
operation mode is switched to PU operation mode.
Function/Operation
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.
Forcibly switched to external operation mode.
External operation allowed.
Switching to PU operation mode inhibited.
Opera-
tion
MRS Signal Mode
(Note
4)
ON → OFF
(Note 3)
External
ON → OFF
(Note 3)
OFF → ON
ON → OFF
External
OFF → ON
ON → OFF
STOP
key of the control panel.
RESET
Operating Status
During stop
If external operation
frequency setting
and start signal are
entered, operation is
performed in that
status.
During stop
During operation →
output stop
Output stop →
operation
112
PARAMETERS
Switching to
Parameter
PU Operation
Write
Mode
Allowed →
Disallowed
disallowed
Allowed →
Disallowed
disallowed
Disallowed →
Allowed
disallowed
Disallowed →
Disallowed
disallowed
Disallowed →
Disallowed
disallowed
Disallowed →
Disallowed
disallowed
4