Hitachi CP-X200 Using Intelligent Output Terminals, Sinking Outputs, Open Collector

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Using Intelligent Output Terminals

The intelligent output terminals are programmable in a similar way to the intelligent input terminals. The inverter has several output functions that you can assign individually to two physical logic outputs. One of the outputs is an open-collector transistor, and the other output is the alarm relay (form C – normally open and normally closed contacts). The relay is assigned the alarm function by default, but you can assign it to any of the functions that the open-collector output uses.

Sinking Outputs, Open Collector

The open-collector transistor output can handle up to 50mA. We highly recommend that you use an external power source as shown at the right. It must be capable of providing at least 50mA to drive the output at full load. To drive loads that require more than 50mA, use external relay circuits as shown below right.

andOperations Monitoring	Monitoring
and
Operations	Sinking Outputs, Open Collector
	If you need output current greater than
	50mA, use the inverter output to drive a
	small relay. Be sure to use a diode across
	the coil of the relay as shown (reverse-
	biased) in order to suppress the turn-off
	spike, or use a solid-state relay.

X200 Inverter
Logic output
common
CM2	11

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Load

X200 Inverter
Logic output
common
CM2	11

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+

RY