Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 111)

Publication 1747-UM003A-EN-P
Understanding Your SLC 500/1746 Control System B-19
If you connect a 1746 triac output module to control an inductive load, we
recommend that you use varistors for surge suppression. Choose a varistor that
is appropriate for the application. The surge suppressors we recommend for
triac outputs when switching 120V ac inductive loads are a Harris MOV, part
number V220 MA2A, or an 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.
Applications such as high-frequency welding equipment and large ac motors
generate excessively high levels of electrical noise. In these applications, all
possible sources of noise should be suppressed. Achieve best results when the
noise suppressors are connected as closely as possible to the surge generating
device. (See table below.)
ATTENTION
!!!!
Do not use suppressors having RC networks, since damage
to triacs could occur. Allen-Bradley ac surge suppressors not
recommended for use with triacs include Catalog Numbers
199-FSMA1, 199-FSMA2, 1401-N10, and 700-N24.
Table B.3 Recommended Suppressors
Device Coil Voltage Suppressor Catalog
Number
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-F5MA2
(2)
Bulletin 709 Motor Starter 120V ac
1401-N10
(2)
Bulletin 700 Type R, RM Relays ac coil None Required
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
12V dc
12V dc
700-N22
700-N28
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
24V dc
24V dc
700-N10
700-N13
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
48V dc
48V dc
700-N16
700-N17