Weidmuller WI-I/O-EX: Wireless I/O Expansion Modules v1.11 Manual de usuario descargar pdf (Pagina 16)

WI-I/O-EX Serial I/O Module User Manual v1.11

Page 16 February 2010

2.2.3.3 Floating Differential Voltage Inputs

Differential voltage inputs allow a voltage to be measured when it cannot be referenced

to earth or ground. The diagram in Figure 2-9 shows how to connect differential voltage

inputs. The module has a 27V common mode input range.

Figure 2-9: Connection for differential voltage input mode.

Note:

- The module configuration needs to be changed for this type of input

- To change the input configuration, refer to section 4.4

V-

AIN3

AIN4

AGND

WI-I/O-EX-1-S-12 Module

ALS +24V

Sensors with

voltage signals

AIN1

AIN2

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 54 55

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Weidmuller WI-I/O-EX: Wireless I/O Expansion Modules v1.11 Manual de usuario Pagina 16