Nidec Control Techniques Digitax-SF DA28C23 - Page 126

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4
Connection
Digitax SF Instruction Manual
5. Descriptions of CN1 Connector Signals
4. Connections
5. Descriptions of CN1 Connector Signals
Pin No.
21, 22
Interface Circuit
PO（Page 46） Control Mode
Signal Description P S T
ALM ＋
(Pin No.21)
ALM －
(Pin No.22)
Alarm
Open
In one of the following conditions
An alarm is occurring.
Control power is not supplied to the drive.
Close
The following conditions are met at the same time.
No alarm is occurring.
Control power is supplied to the drive.
■ TIP
The emitter side of the output transistor is independent of
COM-. Cascade connection to multiple drives is possible.
dif.
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