Chapter 12 Description of Parameter Settings
ME300
Default: 0
Settings 0: Disable operation
1: Execute one program cycle
2: Continuously execute program cycles
3: Execute one program cycle step by step
4: Continuously execute one program cycle step by step
5: Disable automatic operation, but the direction setting at multi-step speed
1 to 7 are effective
This parameter selects the mode of PLC operation for the AC motor drive. The PLC program can
be applied for any external controls, relays or switches. The AC motor drive changes speeds and
directions according to your desired programming.
When this parameter is set to 5 and it is running by external multi-speed, the highest priority of
the operation direction is Pr.12-41.
Example 1 (Pr.12-40 = 1)
Execute one cycle of the PLC program. Related parameter settings are:
Pr.04-00–04-06: 1
st
to 7
th
step speed (sets the frequency of each step speed).
Pr.02-01–02-05: Multi-Function Input Terminals (set one multi-function terminal as 94-
Programmable AUTO RUN).
Pr.02-13–02-16: Multi-Function Output Terminals (set a Multi-Function Terminal as 77-
program running indication, 78-Program Step Completed Indication or 79-Program
Running Completed Indication).
Pr.12-40: PLC mode.
Pr.12-41: Direction of operation for Master Frequency and1
st
to 7
th
step speed.
Pr.12-42–12-49: Operation time setting of Master Frequency and 1
st
to 7
th
step speed.
The diagram above shows one complete PLC cycle. To restart the cycle, turn the PLC program
off and then turn back on.
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