4. Installation
4-9 Alarm relay setting (option)
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TN2
TN3
TN4
4 Pull out the terminal plates (TN2 (Relay1), TN3
(Relay2), and TN4 (Relay3)) from the terminal plate
board.
5 Connect the alarm unit wires to the corresponding
terminals on the detached terminal plates.
Use either terminal 1 (N.O.) or terminal 3 (N.C.) on the
terminal plate.
For information on how to connect cables to the terminal
plates, refer to ‘4-7-5 Connecting cables to the terminal
plate’.
Common for TN2 (Relay1), TN3 (Relay2), and TN4
(Relay3)
(Default (normally de-energized) terminal assignment)
Terminal
No.
Cable connection
1
N.O.
2
Common
3
N.C.
N.O.: Normally open
N.C.: Normally closed
Recommended insulation length: 120 - 130 mm
6 Mount the terminal plates (TN2 (Relay1), TN3 (Relay2),
and TN4 (Relay3)) on the terminal plate board.
Adjust the cable position so that no load is applied to the
terminal plates.
7 Return the display unit to its original position and
secure with the two M3 screws.
Take care not to trap the cable here.
8 Rotate the cover clockwise to attach and secure with
the single M4 hex socket set screw.
Use a hex key wrench (2 across flats) to tighten the M4
hex socket set screw.
Take care not to trap the cable when attaching the cover.
Rotate the cover clockwise until it moves no further to
securely fasten in place.
*The diagram illustrates the SD-3. The connection method for the SD-3SC is
identical.
Sheathing
Insulation
Conductor
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