Wago Uii (Unique Item Identifier); Strain Gauge Application Example - WAGO 750 Series Manual

WAGO I/O System 750
750-1491 2AI Resistor Bridge (Strain Gauge)
12.4

WAGO UII (Unique Item Identifier)

Each I/O module (750-1491) is provided with a unique WAGO UII ("Unique Item
Identifier").
Application example:
The I/O module can be permanently assigned a calibration certificate via this UII.
13

Strain Gauge Application Example

In the test setup, a load cell is connected to the I/O module (e.g., Channel 1).
The load cell has a 5 V supply voltage (+U
The reference voltage (U
bridge voltage (U
In this example, the reference voltage is measured by the "5 V (internal)" setting
and the strain gauge bridge voltage by the "±15 mV" setting.
Sample equation:
Technical data of the load cell used
e.g., 5 kg equals
The weight is calculated as follows:
�������� =
By
���������������� =
and
���� =
����1
����1����0
����2
����1����0
is
) is detected by the U
ref
) by the U input (U
d d
2 ��������
����
∗ 15 ��������
����1
����1����0
25000
∗ 5 ����
����2
����1����0
25000
∗ 7.5 ��������
Strain Gauge Application Example 103
1, −U 1) from the I/O module.
V V
input (+U
ref
1, −U 1).
d d
:
���� = ∗ 5 ��������
� �
��������
2 ��������
� ���������������� �
1 ����
(standardization to 25000, 15 mV ≙ 25000)
(standardization to 25000, 5 V ≙ 25000)
1, −U 1) and the
ref ref
Manual
Version 1.0.0