Self-Diagnostics - YASKAWA GA700 Technical Manual

Register No.
(Hex.)
If parameter data is written to the EEPROM, data on the RAM is enabled simultaneously.
0900
Parameter changes are saved even if the drive is restarted.
Only data on the RAM is updated and parameter data is not written to the EEPROM.
0910
When the drive is de-energized, parameter changes will be deleted.
Note:
• The maximum number of write times of the EEPROM used by the drive is 100000 times. Be careful not to frequently execute the Enter
command (0900 (Hex.)) that is written to EEPROM. The Enter command register is write-only. Consequently, if this register is read,
Register Number Error (02 (Hex.)) will occur.
• When the command data or broadcast message is transmitted to the drive, the Enter command is not necessary.
■
Enter Command Setting when Replacing an Old Product
When replacing an old Yaskawa model with this product, the Enter command function for this product must be set
in the same manner as the old product. The functionality of the Enter command will vary among the Yaskawa G7,
F7 series and V7 series. Set the functionality of the Enter command based on H5-11.
• When replacing G7 and F7 series, set H5-11 = 0 [Enter Required].
• When replacing the V7 series, set H5-11 = 1 [No EnterRequired].
• When replacing the drive for the 1000 series, set it in the same manner as the drive it has replaced.
H5-11 setting value
Replacement target drive
Timing at which parameter settings are
enabled
Upper and lower limit check
Default setting of related parameter
Fault detection when setting multiple
parameters
◆

Self-Diagnostics

The drive is capable of self-diagnosing the operation of the serial communications interface circuit. This function
is called Self-Diagnostics. Self-Diagnostics connects the transmission terminal of the communication part with the
reception terminal and transmits the data that the drive has sent, checking whether the drive is able to
communicate normally.
Follow the procedure below to perform Self-Diagnostics.
1.
Energize the drive.
2.
Set the H1-06 = 67 [Terminal S6 Function Select = Communications test mode].
3.
De-energize the drive.
4.
Connect the control circuit terminal S6 to SN.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Table 5.4 Types of Enter Command
Description
Table 5.5 Enter Command Function Differences
H5-11 = 0
G7, F7
When the Enter command is received from
the master
Checks the upper and lower limits bearing in
mind the setting contents for the related
parameters.
Not reflected (The setting of related
parameters are not changed. If changes are
required, do the changes manually.)
Accepts and responds normally to valid
setting data even if the data contains
parameter setting errors. The disabled setting
data will be discarded, but no error message
is returned.
5.3 MEMOBUS/Modbus Communications
H5-11 = 1
V7
When performing parameter settings
Performs an upper and lower limit check on
the parameter that was changed only.
The default settings for the related
parameters are automatically rewritten.
If there is a setting error in even one
parameter, it responds with a fault. Sent data
is completely discarded.
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