Hitachi L100 IP Series, Инструкция по эксплуатации

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Chapter 7 – Control circuit terminal functions
7-13
Terminals 11, 12 (programmable digital outputs)
General notes
The programmable digital outputs 11 and 12 are transistor outputs with open collector (refer to the figure
below) which can be used to connect relays. Various functions can be assigned to these two outputs
according to user demands. Among these functions are signalling when a predefined frequency value is
reached, or when a trip occurs.
Transistor output
27VDC, 50mA max.
11, 12
CM2
24V
The programming of the desired terminal function for each of the two digital outputs 11 and 12 is carried out
using
C 21 and C 22 , i.e. C 21 is used to set the function of digital output 11, and C 22 is used to set the
function of digital output 12.
The programmable digital outputs are factory preconfigured as normally closed contacts. So if the configured
function of an output terminal is to be activated, the corresponding output will be opened. Deactivation of an
output terminal means that the output is closed.
The digital outputs can alternatively be programmed as normally open contacts. To do this, enter a 00 under
C 32
and
C 33
(corresponding to digital output 11 and 12).