IAI America S-SEL-E - Manual (Page 13)

Page 11
‚ DC solenoid valve · magnetic switch · relay
• Install a diode parallel with a reactive/inductive load.
• Select a diode with the proper voltage rating. The voltage rating is
determined by the loading capacity of the system.
• When installing the diode, pay careful attention to the polarity of the
diode. A diode installed in reverse polarity could damage your IA
System's internal circuitry.
• If the Controller output will be driving a 24V relay or a 120V sole-
noid valve, the diode must be installed to reduce any noise made by
these devices.
Circuit Example
OUT CR
24V
SOL
CR
Solenoid Valve
0V
AC 117V
COM
IA Super SEL
Controller
MY2
DC24V
0V
Chapter 1. Setting Up
ENB221D-14A