Hitachi SJ300 Series, Инструкция по эксплуатации

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Using Intelligent Output Terminals
Oper
ations
a
nd Moni
tor
ing
4–42
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 five
physical logic outputs. Along with these solid-state outputs, the alarm relay output has type
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 outputs can use.
TIP: The open-collector transistor outputs can handle up to 50mA each. We highly recommend
that you use an external power source as shown. It must be capable of providing at least 250mA
to drive the outputs at full load.
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.
Output circuits
+
–
24VDC
common
External
system
SJ300 inverter
Sinking outputs
(open collector)
13 14 15 11 12
L L L L L
CM2
RY
+
–
11
CM2