Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

6 Wiring6.3.6 Interface Circuit(b) Open-collector Output CircuitCN1 connector terminals 37 to 39: Alarm code output are explained below.Alarm code signals (ALO1, ALO2, ALO3) are output from open-collector transistor output circuits. Connectan open-collector output circuit through a photocoupler, relay circuit, or line receiver circuit.Photocoupler Circuit ExampleRelay Circuit ExampleSERVOPACK5 to 12 VDCPhotocouplerSERVOPACK5 to 24 VDCRelay0V0V0VLine Receiver Circuit ExampleSERVOPACK5 to 12 VDC0V0VNote: The maximum allowable voltage and current capacities for open-collector output circuitsare as follows:• Voltage: 30 VDC• Current: 20 mA DC(c) Photocoupler Output CircuitPhotocoupler output circuits are used for servo alarm (ALM), servo ready (/S-RDY), and other sequence outputsignal circuits. Connect a photocoupler output circuit through a relay circuit or line receiver circuit.Relay Circuit ExampleLine Receiver Circuit ExampleSERVOPACK5 to 24 VDCRelaySERVOPACK5 to 12 VDC0V0VNote: The maximum allowable voltage and current capacities for photocoupler output circuitsare as follows:• Voltage: 30 VDC• Current: 50 mA DC6-18