Grounding the controller – Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual User Manual
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Rockwell Automation Publication 1766-UM001H-EN-P - May 2014
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Wire Your Controller Chapter 3
Grounding the Controller
In solid-state control systems, grounding and wire routing helps limit the effects
of noise due to electromagnetic interference (EMI). Run the ground connection
from the ground screw of the controller to the ground bus prior to connecting
any devices. Use AWG #14 wire. For AC-powered controllers, this connection
must be made for safety purposes.
Bulletin 100C, (C09 - C97)
24…48V AC
100-FSC48
(1)
RC
110…280V AC
100-FSC280
(1)
380…480V AC
100-FSC480
(1)
12…55V AC, 12…77V DC
100-FSV55
(1)
MOV
56…136V AC, 78…180V DC
100-FSV136
(1)
137…277V AC, 181…250V DC
100-FSV277
(1)
278…575V AC
100-FSV575
(1)
12…250V DC
100-FSD250
(1)
Diode
Bulletin 509 Motor Starter Size 0 - 5
12…120V AC
599-K04
MOV
240…264V AC
599-KA04
Bulletin 509 Motor Starter Size 6
12…120V AC
199-FSMA1
(2)
RC
12…120V AC
199-GSMA1
(3)
MOV
Bulletin 700 R/RM Relay
AC coil
Not Required
24…48V DC
199-FSMA9
MOV
50…120V DC
199-FSMA10
130…250V DC
199-FSMA11
Bulletin 700 Type N, P, PK or PH Relay
6…150V AC/DC
700-N24
RC
24…48V AC/DC
199-FSMA9
MOV
50…120V AC/DC
199-FSMA10
130…250V AC/DC
199-FSMA11
6…300V DC
199-FSMZ-1
Diode
Miscellaneous electromagnetic devices
limted to 35 sealed VA
6…150V AC/DC
700-N24
RC
(1)
Catalog numbers for screwless terminals include the string ’CR’ after ’100-’.
For example: Cat. No. 100-FSC48 becomes Cat. No. 100-CRFSC48; Cat. No. 100-FSV55 becomes 100-CRFSV55; and so on.
(2)
For use on the interposing relay.
(3)
For use on the contactor or starter.
(4)
RC Type not to be used with Triac outputs.
Varistor is not recommended for use on the relay outputs.
Recommended Surge Suppressors
Device
Coil Voltage
Suppressor Catalog Number
Type
(4)