Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 49)

Publication 1747-UM011G-EN-P - June 2008
Selecting Your Hardware Components 49
Surge Suppression Diagram
If you connect an SLC 500 controller triac output to control an
inductive load, use varistors to suppress noise. Choose a varistor that
is appropriate for the application. We recommend the following surge
suppressors for triac outputs when switching 120V ac inductive loads:
• Harris MOV, part number V220 MA2A
• Allen-Bradley MOV, catalog number 599-K04 or 599-KA04,
Series C or later.
Consult the varistor manufacturer’s data sheet when selecting a
varistor for your application.
Allen-Bradley surge suppressors recommended for use with
Allen-Bradley relays, contactors, and starters are shown in the table
below.
+ dc or L1
Snubber
dc COM or L2
VAC/VDC
ac or dc
Output Module
Out 0
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
COM
ATTENTION
Damage could occur to SLC 500 triac outputs if you use
suppressors having RC networks and the triac load current is 15
mA or less.
Devices Requiring Surge Suppression
Device Coil Voltage Suppressor Cat. No.
Bulletin 509 Motor Starter
Bulletin 509 Motor Starter
120V ac
240V ac
599-K04
(1)
599-KA04 (1)
Bulletin 100 Contactor
Bulletin 100 Contactor
120V ac
240V ac
199-FSMA1 (2) , 199-GSMA1 ()
199-FSMA2
(2)
Bulletin 709 Motor Starter 120V ac
1401-N10 (2)
Bulletin 700 Type R, RM Relays ac coil none required