Load Cell Systems TLB4 User Manual

- 6 -
ELECTRICAL CONNECTIONS
BASIC INFORMATION
- It is recommended that the power supply negative pole be grounded.
- It is possible to supply up to 16 350 ohm load cells.
- Connect terminal “–SUPPLY” to the RS485 common of the connected instruments in the event
that these receive alternating current input or that they have an optically isolated RS485.
- In case of an RS485 network with several devices it is recommended to activate the 120 ohm
termination resistance on the two devices located at the ends of the network, as described in the
paragraph RS485 SERIAL CONNECTION.
WIRING DIAGRAM
In case of difficulty connecting all the reference wires of the installed load cells, simply connect
those of the load cell located at the average distance from the instrument. The reference wires not
used must be individually isolated.
USE OF 4-WIRE LOAD CELLS: if all the load cells used are 4-wire, make a jumper between -EX
(26) and -REF (22) and between +EX (25) and +REF (21).
LOAD CELL 1 LOAD CELL 2 LOAD CELL 3 LOAD CELL 4
15 16
17
18 19 20
21 22
23
24
25 26
27
28 29 30
+SIG
-SIG
SH
+EX
-EX
+REF
-REF
+SIG
-SIG
SH
+EX
-EX
+REF
-REF
+SIG
-SIG
SH
+EX
-EX
+REF
-REF
+SIG
-SIG
SH
+EX
-EX
+REF
-REF
1 2
3
4
5
6
7
8 9
OUT 1
OUT 2
OUT 3
OUT COMMON
IN 1
IN 2
IN COMMON
+12/24 VDC
0 VDC
12/24 VDC
SUPPLY
+
-
INPUTS
supply 5÷24 VDC
OUTPUTS
max 115 VAC 150 mA
10
11 12
+ 0÷20 - 4÷20 mA
+ 0÷10 VDC
ANALOG
OUTPUT
- COMMON
TLB4 ONLY
+ RS485
- RS485
RS485

Load Cell Systems TLB4 Specifications

General

Brand	Load Cell Systems
Model	TLB4
Category	Transmitter
Language	English