Siemens SIWAREX WP321 Manual

Connection
6.1 24 V connection
SIWAREX WP321
26 Manual, 07/2014, A5E33715669A-02
6.1
24 V connection
The 24 V DC supply voltage is connected by means of the corresponding terminals on the
base unit.
Table 6- 1 Connection of the 24 V supply
Labeling
Function
L + +24 V voltage supply
M Ground voltage supply
6.2
Connecting the load cells
Pickups can be connected to the SIWAREX WP321 electronic weighing system which are
equipped with strain gauges (full bridge) and meet the following requirements.
● Characteristic value 1 to 4 mV/V
● A supply voltage of 5 V is permitted
The power supply for the load cells is 4.85 V.
Observe the following rules for connection of analog (DMS) load cells
1. The use of a junction box (SIWAREX JB junction box) is required when more than one
load cell is connected (the load cells must be connected in parallel). If the distance of a
load cell to the SIWAREX WP321 or the junction box is greater than the available length
of the load cell connection cable, use the SIWAREX EB extension box.
2. The cable shield is always applied at the cable gland of the junction box (SIWAREX JB)
or the extension box. If there is a risk of equipotential bonding through the cable shield,
connect a equipotential equalization conductor parallel to the load cell cable.

Siemens SIWAREX WP321 Specifications

General

Brand	Siemens
Model	SIWAREX WP321
Category	Accessories
Language	English