5.3 Description of Function Codes
5-159
FUNCTION CODES
Chap 5
H09, d67
Starting mode (Auto search)
Related function codes: H49 (Starting mode, auto search delay time 1)
H46 (Starting mode, auto search delay time 2)
Specify the mode for auto search without stopping the idling motor. The mode can be specified for each restart
after momentary power failure and each start of normal operation. The starting mode can be switched by assigning
“STM” to a general-purpose digital input signal. If it is not assigned, “STM” is regarded to be OFF. (Data = 26)
■ H09/d67 (Starting mode, auto search) and terminal command “STM” (“Enable auto search for idling
motor speed at starting”)
The combination of H09 data and the “STM” status determines whether to perform the auto search as listed below.
Function code Drive control Factory default
H09 V/f control (F42 = 0 to 2) 0: Disable
d67 Vector control for synchronous motor without pole position
sensor nor speed sensor (F42 = 15)
2: Enable
H09/d67 data
Enable auto search for idling
motor speed at starting
“STM”
Auto search for idling motor speed at starting
Restart mode after momentary
power failure (F14 = 3 to 5)
For normal startup
0: Disable OFF Disable Disable
1: Enable OFF Enable Disable
2: Enable OFF Enable Enable
― ON Enable Enable
When “STM” is ON, auto search for idling motor speed at starting is enabled regardless of the H09/d67 setting.
( Function codes E01 to E05, data =26)
Auto search for idling motor speed to follow
Starting the inverter (with a run command ON, BX OFF, auto-reset, etc.) with STM being ON searches for the idling
motor speed for a maximum of 1.2 seconds to run the idling motor without stopping it. After completion of the auto
search, the inverter accelerates the motor up to the reference frequency according to the frequency command and
the preset acceleration time.
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