3 Wiring and Connection
3.5.3 Sequence Output Circuit
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3.5.3 Sequence Output Circuit
Three types of multi-winding drive unit sequence output circuits to a SERVOPACK are available and one type
of SERVOPACK sequence output circuit is available.
(1) Multi-Winding Drive Unit Sequence Output Circuits
Open-collector Output Circuit
CN1 connector pins 37 to 39 (alarm code output) on the multi-winding drive unit are explained below.
Alarm code signals (ALO1, ALO2, ALO3) are output from open-collector transistor output circuits. Connect
an open-collector output circuit through a photocoupler, relay or line receiver circuit.
Note: The maximum allowable voltage and maximum current capacity for open-collector output circuits are as follows.
• Voltage: 30 VDC
• Current: 20 mA DC
Incorrect wiring or incorrect voltage application to the output circuit may cause short-cir-
cuit.
If a short-circuit occurs as a result of any of these causes, the holding brake will not
work. This could damage the machine or cause an accident resulting in death or injury.
Photocoupler Circuit Example Relay Circuit Example
Line Receiver Circuit Example
0V
0V
Multi-winding drive unit
5 to 12 VDC
Photocoupler
0V
Relay
5 to 24 VDC
Multi-winding drive unit
0V
Multi-winding drive unit
5 to 12 VDC
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