Chapter 12 Descriptions of Parameter SettingsMS300 
378 
 
4.  Refer to the RTD temperature and resistance comparison table 
Temperature = 135°C, resistance = 151.71 , input current: 9 mA, voltage: about 1.37 V
DC
 
Temperature = 150°C, resistance = 157.33 , input current: 9 mA, voltage: about 1.42 V
DC
 
5.  When the RTD temperature > 135°C, the drive decelerates to the specified operation 
frequency automatically. Then, Pr.06-56 = 1.37 V and Pr.06-58 = 10 Hz. (When Pr.06-58 = 
0, it disables the specified operation frequency.) 
6.  When RTD temperature > 150°C, the drive outputs a fault, decelerates to STOP, and 
displays the warning “oH3”. Then, Pr.06-57 = 1.42 V and Pr.06-29 = 1 (fault and ramp to 
stop).   
Software Detection GFF Current Level 
Software Detection GFF Filter Time 
 When the drive detects that the unbalanced three-phase output current is higher than the setting 
for Pr.06-60, GFF protection activates. The drive then stops output. 
Operation Time of Fault Record 1 (Day) 
Operation Time of Fault Record 2 (Day) 
Operation Time of Fault Record 3 (Day) 
Operation Time of Fault Record 4 (Day) 
Operation Time of Fault Record 5 (Day) 
Operation Time of Fault Record 6 (Day) 
Operation Time of Fault Record 1 (Min.) 
Operation Time of Fault Record 2 (Min.) 
Operation Time of Fault Record 3 (Min.) 
Operation Time of Fault Record 4 (Min.) 
Operation Time of Fault Record 5 (Min.) 
Operation Time of Fault Record 6 (Min.) 
 If there is any malfunction when the drive operates, Pr.06-17–06-22 records the malfunctions, 
and Pr.06-63–06-70 records the operation time for four sequential malfunctions. Check if there is 
any problem with the drive according to the interval of the recorded fault. 
Example:   
The first error: ocA occurs after motor drive operates for 1000 minutes.   
The second error: ocd occurs after another 1000 minutes.   
The third error: ocn occurs after another 1000 minutes.