Horner APG SmartStack I/O HE-DIQ722 - Manual (Page 6)

PAGE 6 10 NOV 2006 MAN0315-07
DIQ722
Information is subject to change without notice. SmartStack is a trademark of Horner APG, LLC.
Typical Relay Life
Voltage
(Resistive)
No Load
Load Current
1 Amp 2 Amp 3 Amp
30 VDC 600 K 250 K 125 K
125 VAC 750 K 300 K 150 K
250 VAC
20 Million
500 K 200 K 100 K
The following applies to applications in which two-wire proximity switches are used as sensors for discrete
AC inputs. For these applications, an external resistor or resistor/capacitor combination must be added to
each input as shown below. The resistor provides a small current to power the proximity switch. The
resistor is not required for other types of proximity switches.
120 VAC: 15 KΩ, 2 W resistor or 0.22 µF metallized film capacitor rated for 120 VAC service in
series with 470Ω, 0.5 W resistor.
OCS
Smartstack
Module
Input
Common
Proximity Switch
AC
Added
Resistor