Weidmuller WI-I/O-EX: Wireless I/O Expansion Modules v1.11 - Manual (Page 14)

WI-I/O-EX Serial I/O Module User Manual v1.11
Page 14 February 2010
2.2.3.1 Grounded Single-Ended mA Inputs
Single-ended current inputs allow twice as many inputs as the differential mode. This
mode is useful when the sensor loop can be grounded to the WI-I/O-EX module. Devices
may also be powered by the 24V supplied by the WI-I/O-EX. Refer to Figure 2-7:
Figure 2-7: Connection for single-ended current inputs. Transducers may be
externally powered or powered by the WI-I/O-EX +24V loop supply (ALS).
Note:
- The module is configured at the factory for this type of input
- To change the input configuration, refer to section 4.4
V-
AIN1
AIN2
AGND
WI-I/O-EX Module
ALS +24V
Loop powered
sensor
Externally powered
sensor
+ -
+
-