Instruction manual

114
PARAMETERS
<Function/operation changed by switching on-off the MRS signal>
(3) Operation mode switching by external signal
1) Preparation
Set "8" (switching to other than external operation mode) in Pr. 79.
Use any of Pr. 180 to Pr. 183 (input terminal function selection) to set the terminal
used for X16 signal input.
Refer to page 147 for Pr. 180 to Pr. 183 (input terminal function selection).
2) Function
This switching is enabled during an inverter stop only and cannot be achieved
during operation.
Operating
Condition
MRS
Signal
Operation
Mode
(Note 4)
Operating Status
Parameter
Write
Switching to
PU
Operation
Mode
Operation
mode
Status
PU
During
stop
ON
→ OFF
(Note 3)
External
During stop
Enabled →
disabled
Disabled
During
operation
ON
→ OFF
(Note 3)
If external operation
frequency setting and
start signal are entered,
operation is performed
in that status.
Enabled
→
disabled
Disabled
External
During
stop
OFF
→ ON
External
During stop
Disabled
→
disabled
Enabled
ON
→ OFF
Disabled
→
disabled
Disabled
During
operation
OFF
→ ON
During operation
→
output stop
Disabled →
disabled
Disabled
ON
→ OFF
Output stop
→
operation
Disabled →
disabled
Disabled
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 key of the operation panel.
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.
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.
X16 Signal Operation Mode
ON External operation mode (cannot be changed to the PU operation mode)
OFF PU operation mode (cannot be changed to the external operation mode)
STOP
RESET
M4500E.book 114 ページ ２００５年２月２２日 火曜日 午後５時７分