Bit Function Data = 0 Data = 1
Bit 6 Braking transistor error detection Continuous running Alarm processing
Bit 7 Reserved - -
Use the reserved bit fixed at 0.
Below are the details of each function.
Main Circuit Capacitor Life Judgment Selection (Bit 3)
Either of the factory default standards or user setting standards can be selected as the criteria level for
judging the life of the main circuit capacitor.
When user setting standards are selected, the reference level must be measured and set beforehand.
For details, refer to
8-8-10 Capacitor Life Warning Signal (WAC) on page 8-85.
Judge Main Circuit Capacitor Life (Bit 4)
To judge the life of the main circuit capacitor, measure the discharge time when the power supply is
shut off. The discharge time is determined by the capacity of the main circuit capacitor and the inver-
ter's internal load. Accordingly
, accurate measurement is not possible when the inverter's internal load
conditions fluctuate considerably. Life is also sometimes judged erroneously in some conditions. To
prevent erroneous judgment of the life of the main circuit capacitor, life judgment based on the dis-
charge time of the main circuit capacitor can be disabled (life judgment based on incrementation of the
time that voltage is applied to the main circuit capacitor continues to stay active). For details, refer to
8-8-10 Capacitor Life Warning Signal (WAC) on page 8-85.
When using the control power supply auxiliary inputs, the load varies considerably. For this reason,
during run operation, either disable life judgment and then enable life judgment after aligning condi-
tions at periodic inspection, or measure by a method matched to actual usage conditions.
Inrush Current Prevention Resistor Overheat Detection Protection
(Alarm Code: 46) (Bit 5)
On 0.1 to 15 kW inverters, when overheating of the inrush current prevention resistor inside the inver-
ter is detected when the main circuit power is turned ON and started, the overheat protection function
(alarm code: 46) is activated. When startup is slow due to the main circuit power being a variable pow-
er supply device, the overheat protection function is sometimes activated. In this case, protection can
be disabled.
Braking Transistor Error Detection (Alarm Code: 16) (Bit 6)
Detects the built-in braking transistor error and stops the inverter by Braking transistor broken detec-
tion (alarm code: 16). To disable alarm generation without using the braking transistor
, set this bit to
“0.”
8 Other Functions
8-142
M1 Series EtherCAT Type User’s Manual (I670)
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