Edwards Signaling E-RLY User Manual

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P/N 3101196 • REV 02 • ISS 28JAN13

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Figure 3: Control relay function

(1) Normally closed contact (NC)
(2) Normally open contact (NO)
(3) Common contact
(4) Power-limited unless connected to a nonpower-limited source. If

the source is nonpower-limited, eliminate the power-limited mark
and maintain a minimum of 0.25 in. (6.4 mm) space from power-
limited wiring. For other mounting methods, see enclosure and
bracket installation sheets to maintain separation of power-
limited and nonpower-limited wiring. The wire size must be
capable of handling fault current from nonpower-limited source.
— or —

Use type FPL, FPLR, FPLP, or permitted substitute cables,
provided these power-limited cable conductors extending beyond
the jacket are separated by a minimum of 0.25 in. (6.4 mm)
space or by a nonconductive sleeve or nonconductive barrier
from all other conductors. Refer to the NFPA 70 National
Electrical Code for more details.

(5) All wiring is power-limited and supervised
(6) Signaling line circuit (SLC) from previous device
(7) Signaling line circuit (SLC) to next device
(8) Not used

Figure 4: Polarity reversal relay function

(1) Normal
(2) Active
(3) Power out
(4) Power in
(5) Power-limited unless connected to a nonpower-limited source. If

(6) All wiring is power-limited and supervised
(7) Signaling line circuit (SLC) from previous device
(8) Signaling line circuit (SLC) to next device

TB2

TB1

(5)

(4)

(2)

(3)

(1)

(+)

( )

(6)

(7)

(8)

TB2

TB1

(6)

(5)

(2)

(1)

(+)

( )

(7)

(8)

(3)

(4)