O P E R AT I N G I N S T R U C T I O N S | Bulkscan®
8014829/ZV98/2018-05-07 | S I C K
Subject to change without notice
5 8
ELECTRICAL INSTALLATION
6.3.8.4
Analog input terminal KL3454
The KL3454 analog input terminal process signals in the range between 4 and 20 mA.
The current is digitized to a resolution of 12 bits, and is transmitted, in an electrically
isolated form, to the higher-level automation device. In the KL3454 Bus Terminal, the
four inputs are 2-wire versions and have a common ground potential. This reference
ground for all inputs is connected to the 0 V power contact. The 24 V power contact is
connected to the terminals, in order to enable the connection of 2-wire sensors without
external supply. The power contacts are connected through. Overload is detected and
the terminal status is relayed to the controller via the K-bus. The Run-LEDs indicate the
data exchange with the Bus Coupler, the Error-LEDs indicate overload or wire breakage.
Fig. 47: KL3454 - Connection
Terminal point nr.
Channel Name
Connection for
1
1
Input 1
Analog input 1, belt speed (4...20 mA)
2
+24 V
Analog input 1, 24 V
3
3
Input 3
Analog input 3, mass flow rate (4...20 mA)
4
+24 V
Analog input 3, 24 V
5
2
Input 2
Analog input 2, bulk density (4...20 mA)
6
+24 V
Analog input 2, 24 V
