ELPRO 905U - Inputs and Outputs

905U Wireless I/O Module User Manual
105S Serial I/O Module
Page 60 © January 2011
Inputs and Outputs
Digital Inputs 905U/105S-1 Four
905U/105S-2 Four
905U/105S-3 None
905U/105S-4 Four plus 12
selectable I/O
Opto-
isolated (5000V)inputs, suitable for
voltage free contacts or NPN transistor,
contact wetting current 5mA, input debounce
0.5 second
For –4 modules, as above, but with 3000V
surge protection instead of opto-isolation
Digital Outputs 905U-1/105S-1 Four
Relay output contacts, normally open,
AC 5A 50V
DC 2A 30V, 5A 20V
Digital Outputs 905U-2/105S-2 One
905U-3/105S-3 Eight
905U-4/105S-
4 Four plus
12 selectable I/O
Pulse Inputs 905U-1/105S-1 One
905U-2/105S-2 Four
905U-3/105S-3 None
905U-4/105S-4 Four
Uses DI1. Max rate 100Hz, min. off-time
5msec.
Uses DI1-
4. Max rate of DI1 is 1000Hz,
min. off-time 0.5msec
Max rate of DI2-4 is 100Hz, min. off-time
5msec.
Pulse Output 905U-1/105S-1 One
905U-2/105S-2 None
905U-3/105S-3 Four
905U-4/105S-4 Four
FET output, 30 VDC 500mA max Max rate
for 105-1 is100 Hz. Max rate for 105-3 is
1000 Hz. Pulse signal recreated, pulse rate
avail. on analog output, (scaling
configurable).
Divide-by-10 available for 1000Hz inputs.
Analog Inputs “floating” differential input,
common mode voltage -
0.5V to 27V
905U-1/105S-1
Two 4-20 mA
905U-2/105S-2
Six 0-20mA
24 VDC for powering external loops
provided, 150 mA max. Digital filter time
constant 1 second (config.)
Resolution 15 bit, Accuracy 0.1%
Resolution 12 bit, Accuracy 0.1%
Analog Input Setpoints 905U-1/105S-1 AI 1 only
905U-2/105S-2 AI 1-4
Configurable high & low set-points, allowing
set/reset of remote digital outputs
Analog Outputs current sink to common
905U-1/105S-1
Two 4-20mA
905U-3/105S-3
Eight 0-20mA
max loop voltage 27V,
Resolution 15 bit, Accuracy 0.1%
Resolution 12 bit, Accuracy 0.1%
System Parameters