Owner's manual

Chapter 2 Installation Procedure
17
2
• The following I-type clips can be used for connections.
Connecting power supply
Connect a 24 VDC power supply to the “IN” terminal.
When a 24 VDC power supply is connected to the “IN” terminal, the “OUT” terminal
can be used as a 24 VDC power supply output terminal. In this case, the “OUT”
terminal can be used as a power supply for other N-48 unit connected in the multi-
drop link configuration. (➮ For a connection example, see p. 19. )
• Do not connect a power supply other than 24 VDC or the unit may be
damaged.
• Connecting a power supply to the RS-485 terminal may damage the N-48.
• Do not connect different types of power supplies to the IN and OUT termi-
nals or the unit may not start normally due to the potential difference
between the power supplies.
24V DC OUT 24V DC IN
SG SG ++--
RS-485 RS-485
+–
Symbol Description Signal direction
RS-485 SG RS-485 signal ground –––
RS-485 + RS-485 + terminal Input/Output
RS-485 - RS-485 - terminal Input/Output
24 VDC IN (OUT) 24 VDC power supply input (output) + terminal Input(Output)
24 VDC power supply input (output) - terminal Input(Output)
24V DC OUT 24V DC IN
--
+–
24 VDC
+
CAUTION
5 mm max.
6 mm min
2.0 mm
max.
* Viewed from the bottom of the unit