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LCI40
Series IOM
Description of Symbols
mA meter. 0 to 20 mA or 4 to 20 mA and other.
RL is the internal resistance of the measuring point including the cable resistance
DC voltage source (Uext), external power supply, any connection polarity
DC voltage source (Uext), observe connection polarity according to connection diagrams
Internal DC voltage source
Controlled internal power source in the device
Electronic or electromagnetic counter.
At frequencies above 100 Hz, shielded cables must be used to connect the counters.
Ri Internal resistance of the counter.
Button, NO contact or similar
4.10 description of the inputs and outputs
4.10.1 important notes
4. eleCtriCal ConneCtionS
information
Depending on the version, the
pulse and frequency outputs must
be connected passively or actively.
Which I/O version and inputs/
outputs are installed in your signal
converter are indicated on the
sticker in the cover of the terminal
compartment.
danGer
For devices used in hazardous
areas, additional safety notes
apply.
Description of Used Abbreviations
I
a
I
p
Current output active or passive
P
a
P
p
Pulse/frequency output active or passive
S
a
S
p
Status output/limit switch active or passive
C
a
C
p
Control input active or passive
4.10.2 description of the electrical Symbols
•
All groups are electrically isolated from each other
and from all other input and output circuits.
•
Passive mode: An external power supply is
necessary to operate (activation) the subsequent
devices (U
ext
).
•
Active mode: The signal converter supplies the
power for operation (activation) of the subsequent
devices, observe max. operating data.
•
Terminals that are not used should not have
any conductive connection to other electrically
conductive parts.
