Hitachi L100 사용자 설명서

L100 Inverter

Oper

ations

and Monitor

ing

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 individu-
ally to three physical logic outputs. Two of the outputs are open-collector transistors, and 
the third 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 outputs use.

12

11

CM2

Open collector outputs

Load

Load

–
+

Logic output 

common

12

11

CM2

Open collector outputs

–
+

Logic output 

common

RY

RY

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 100mA to 
drive both outputs at full load. 
To drive loads that require 
more than 50mA, use external 
relay circuits as shown below.

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.