- 9 -
ELECTRICAL CONNECTIONS
BASIC INFORMATION
-
It is recommended that the power supply negative pole be grounded (WDESK-D, WINOX:
connect the earthing system to the dedicated external terminal ).
-
It is possible to supply up to eight 350 ohm load cells or sixteen 700 ohm load cells.
-
For 4-wire load cells, make a jumper between EX- and REF- and between EX+ and REF+.
-
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 optoisolated 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
section RS485 SERIAL CONNECTION.
-
Option E/EC: selects the first 12 formulas.
WIRING DIAGRAM: 3 PRODUCTS
) The IN3 input can have the following
functions:
-
APPROVAL (default)
-
SEMI-AUTOMATIC ZERO
-
NET/GROSS WEIGHT
(1) If the analog output is present (ANALOG OUTPUT
OPTION) the following are no longer available:
-
IN3 input
-
SLOW/ALARM output
-
E/EC options
WARNING: connect power supply specified on the plate found on the back of the instrument.
In 115 V and 230 V versions, terminals “+ SUPPLY” and “– SUPPLY” generate continuous voltage
at 24 VDC only to be used as power supply for instrument inputs.
(1) ANALOG OUTPUT OPTION
12
EC OPTION
3
2
1
7
6
8
5
4
10
11
9
8
E OPTION
1
3
2
4 5 6 7
14
11
9 10
13
12
16
15
4
to instrument
Current output:
max load 300 ohm
Voltage output:
min load 10 kohm
Buttons not included in the supply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
12-24 VDC
supply
RS485
IN 3
INPUT
supply
5-24 VDC
to
I
N
C
O
M
M
M
O
N
(R5) S
LOW
/A
LA
RM
to E-EC
OP
T.
-
+
SUPP
LY
+
SUPP
LY
-
TXD
RX
D
(R1) P
ROD.
1
OUT C
OM
MO
N
STO
P
EXCITA
TI
ON
-
REF./SE
NS
E
+
IN C
OMM
ON
EXCITA
TI
ON
+
REF./SE
NS
E
-
SIGNA
L
-
SIGNA
L
+
RS232
LOAD CELLS
6-WIRE load cell
connection
INPUTS
supply
5-24 VDC
OUTPUTS
max 115 VAC
150 mA
2 3 4
+ 0-10
V
DC
- CO
MM
ON
+ 0-20
4-20
mA
19 20 21 22 23 24
EXCIT
.
-
EXCIT.
+
SIGNA
L
-
SIGNA
L
+
4-WIRE load cell connection
8
8 4
+
-
(R2) P
ROD.
2
(R3) P
ROD.
3
(R4) CYC
LE
EN
D
WARNING!
115 V / 230 V OPTIONS
(WDESK-P / WINOX-P)
L
115/230
VAC
N
7
SUPPLY
OUT +
24 VDC
OUTPUT
8
SUPPLY
OUT -
Summary of Contents for WDESK-L
Page 27: ...22 BATCHING CONSTANTS it appears only if in constants TOTAL YES...
Page 66: ......
Page 67: ......
