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Reverse Rotation Prevention Selection (pr. 78); Display Of Applied Parameters And User Group Function (pr. 160, Pr. 172 To Pr. 174) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Fr-a700 series.
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Misoperation prevention and parameter
setting restriction

4.22.3 Reverse rotation prevention selection (Pr. 78)

This function can prevent reverse rotation fault resulting from the incorrect input of the start signal.
Parameter
Number
Reverse rotation prevention
78
selection
⋅ Set this parameter when you want to limit the motor rotation to only one direction.
⋅ This parameter is valid for all of the reverse rotation and forward rotation keys of the operation panel (FR-DU07),
parameter unit (FR-PU04/FR-PU07), start signals (STF, STR signals) via external terminals, and the forward and
reverse rotation commands through communication.

4.22.4 Display of applied parameters and user group function (Pr. 160, Pr. 172 to Pr. 174)

Parameter which can be read from the operation panel and parameter unit can be restricted.
Parameter
Name
Number
160
User group read selection
*1
User group registered
172
display/batch clear
173
User group registration
*2
174
User group clear
*2
*1
This parameter allows its setting to be changed during operation in any operation mode even if "0 (initial value) or 1" is set in Pr. 77 Parameter
write selection.
*2
The values read from Pr. 173 and Pr. 174 are always "9999".
(1) Display of simple mode parameters and extended parameters (Pr. 160)
⋅ When Pr. 160 = "9999", only the simple mode parameters can be displayed on the operation panel (FR-DU07) and
parameter unit (FR-PU04/FR-PU07). (Refer to the parameter list, pages 71 to 84, for the simple mode parameters.)
⋅ With the initial value (Pr. 160 = "0"), simple mode parameters and extended parameters can be displayed.
REMARKS
⋅ When a plug-in option is fitted to the inverter, the option parameters can also be read.
⋅ When reading the parameters using the communication option, all parameters can be read regardless of the Pr. 160 setting.
⋅ When reading the parameters using the RS-485
terminals, all parameters can be read regardless of the
Pr. 160 setting by setting Pr.550 NET mode operation
command source selection and Pr. 551 PU mode operation
command source selection.
⋅ Pr. 15 Jog frequency, Pr. 16 Jog acceleration/deceleration time Pr. 991 PU contrast adjustment are displayed as simple mode
parameters when the parameter unit (FR-PU04/FR-PU07) is mounted.
308
Name
Initial Value
Initial Value
0
0
9999
9999
Setting Range
0
0
1
2
Setting Range
9999
0
1
(0 to 16)
9999
0 to 999, 9999
0 to 999, 9999
Pr. 551
1 (RS-485)
2 (PU)
1 (RS-485)
(initial value)
3 (USB)
(auto-detect)
(initial value)
*
OP indicates a communication option
Description
Both forward and reverse rotations
enabled
Reverse rotation disabled
Forward rotation disabled
Description
Only the simple mode parameters can
be displayed.
The simple mode and extended
parameters can be displayed
Only parameters registered in the user
group can be displayed.
Displays the number of cases registered
as a user group. (Reading only)
Batch clear the user group registration
Set the parameter numbers to be
registered to the user group.
Set the parameter numbers to be cleared
from the user group.
Pr. 550
Pr. 160 Valid/Invalid
Valid
0 (OP)
Valid
Invalid (all readable)
With OP: valid
9999
Without OP: invalid
(all readable)

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