RUN command
FW, RV
EXT terminal input
Motor rotation speed
RS (reset) input
AL output
(Alarm signal)
Free-run
If the RUN command is being input when the alarm is cleared by a reset after a trip, operation is start-
ed in accordance with the frequency reference. To prevent operation from being started unintentional-
ly
, set the start check function to enabled. For details on the start check function, refer to 8-7-3 Start
Check Function on page 8-69.
8-8-5
Thermistor Trip Function
You can provide thermal protection for external equipment such as a motor by connecting a thermistor
installed on it to the inverter and enabling this function.
Parameter No. Function name Data Default data Unit
3008Hex-1BHex
Thermistor Function Selection
(MOH)
0: Disable
1: PTC (Inverter immediately
trips with OH4 displayed)
2: PTC (Inverter issues out-
put signal MOH and contin-
ues to run)
0 -
3008Hex-1CHex
1st Thermistor Error Detection
Level (MOH)
0.00 to 5.00 1.60 V
3005Hex-15Hex/
3005Hex-1CHex
Output Terminal [DO1] Function
Selection/Output T
erminal
[ROA, ROB] Function Selection
56: MOH (Motor overheat
detected by thermistor)
*1
- -
Related function
Output T
erminal [DO1] ON Delay Time
(3051Hex-0AHex)
Output T
erminal [DO1] OFF Delay T
ime
(3051Hex-0BHex)
Output Terminal [ROA, ROB] ON Delay Time
(3051Hex-0EHex)
Output Terminal [ROA, ROB] OFF Delay Time
(3051Hex-0FHex)
*1. The OFF delay of the Motor overheat detected by thermistor (56: MOH) terminal becomes the time obtained
by adding 0.1 s to Output Terminal[DO1] OFF Delay T
ime (3051Hex-0BHex) and Output Terminal [ROA,
ROB] ON Delay Time (3051Hex-0FHex).
Connect a PTC thermistor between the [PTC] terminal and the [AIC] terminal. If, as a result of the re-
sistance value of the connected PTC thermistor, the internal power supply is divided, and the voltage
between the [PTC] terminal and the [AIC] terminal exceeds 1st Thermistor Error Detection Level
(MOH) (3008Hex-1CHex), operation set at Thermistor Function Selection (MOH) (3008Hex-1BHex) is
performed. T
ake thermistor error into consideration when setting the 1st Thermistor Error Detection
8 Other Functions
8-77
M1 Series EtherCAT Type User’s Manual (I670)
8-8 Functions Related to Protection, Warning and Various Output Signals
8
8-8-5 Thermistor Trip Function
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