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Sigma II User's Manual
Pn50A.
1
Setting
9
Inputs the S-ON signal from the SI0 (CN1-40) input terminal.
A
Inputs the/S-ON signal from the SI1 (CN1-41) input terminal.
B
Inputs the S-ON signal from the SI2 (CN1-42) input terminal.
C
Inputs the S-ON signal from the SI3 (CN1-43) input terminal.
D
Inputs the S-ON signal from the SI4 (CN1-44) input terminal.
E
Inputs the S-ON signal from the SI5 (CN1-45) input terminal.
F
Inputs the/S-ON signal from the SI6 (CN1-46) input terminal.
As shown in the table above, the /S-ON signal can be allocated to any input terminal
from SI0 to SI6. /S-ON is always input when Pn50A.1 is set to 7, and an external
signal line would therefore not be needed because the servo amplifier will determine
whether the servo is ON or OFF.
The /S-ON signal is not used when Pn50A.1 is set to 8. This setting is meaningful
only in the following instances.
When the factory set input signal are to be replaced by another input signal.
The signal must be left ON (low level) during normal operation to make the signal
valid when OFF (high level) when forward run prohibit (P-OT) and reverse run pro-
hibit (N-OT) are input. The input terminal signal line must be left ON even in sys-
tem configurations that do not require this signal, but unnecessary wiring can be
eliminated by setting Pn50A.1 to 8.
•
By setting 9 to F, the signal polarity can be reversed.
Note: Several signals can be allocated to the same input circuit.
When the servo is ON, the forward run prohibit or reverse run prohibit signal is used.
At a setting with inverted polarity, the failed safe operation may not be possible in the case of signal
line disconnection.
Chapter 5: Parameter Settings and Functions
Description
5-52
Signal polarity:
Inversion.
Valid at OFF
(H level) with Servo
ON signal
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