21
6 Setup
OPTISWITCH 3300 C • Transistor (NPN/PNP)
29962-EN-210706
0.0003 lbs/in³). OPTISWITCH 3300 C will thus be more sensitive and
can detect light-weight solids more reliably.
For instruments detecting solids in water, these settings are not ap-
plicable. The density range is preset and must not be changed.
With the mode switch (min./max.) you can change the switching sta-
tus of the transistor output. You can set the required mode according
to the "
Function table
" (max. - max. detection or overflow protection,
min. - min. detection or dry run protection).
We recommend connecting according to the idle current principle
(switching output is opened when the switching point is reached) be-
cause the transistor output takes on the same (safe) state if a failure
is detected.
Control lamp for indication of the switching status
•
Green = Output closed
•
Red = Output open
•
red (flashing) = failure
6.3 Function table
The following table provides an overview of the switching conditions
depending on the set mode and the level.
Level
Switching status
Control lamp
Mode max.
Overflow protection
closed
Green
Mode max.
Overflow protection
open
Red
mode min.
Dry run protection
closed
Green
mode min.
Dry run protection
open
Red
Failure of the supply volt-
age
(min./max. mode)
any
open
Mode adjustment (2)
Signal lamp (5)
