Mitsubishi Electric FR-E540 K-EC Series Instruction Manual page 117

2) Function
MRS Signal
Output stopped during external operation.
Operation mode can be switched to PU operation mode.
ON Parameter values can be rewritten in PU operation
mode.
PU operation allowed.
Forcibly switched to external operation mode.
OFF External operation allowed.
Switching to PU operation mode inhibited.
<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
Opera-
tion
MRS Signal Operating Status
Mode
(Note 4)
ON OFF
(Note 3)
If external operation
frequency setting
External
ON OFF and start signal are
(Note 3) entered, operation is
performed in that
status.
OFF ON
ON OFF
External
During operation
OFF ON
ON OFF
During operation
STOP
key of the control panel.
RESET
107
PARAMETERS
Parameter
Write
Allowed
During stop
disallowed
Allowed
disallowed
Disallowed
disallowed
During stop
Disallowed
disallowed
Disallowed
output stop disallowed
Output stop Disallowed
disallowed
Switching to
PU Operation
Mode
Disallowed
Disallowed
Allowed
Disallowed
Disallowed
Disallowed
4