KEYENCE N-400 - Manual (Page 20)

Chapter 2 Installation Procedure
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2
2.2 Connecting N-400 and Wiring
This section describes the procedure for connecting the N-400 to external equip-
ment.
2.2.1 Terminals of I/O terminal block and wiring
* Viewed from the left of the terminal block.
• The following I-type clips can be used for the connections.
Connecting power supply
The N-400 operates with a 24 VDC power supply.
When a 24 VDC power supply is connected to the power supply “IN” terminal, the
“OUT” terminal can be used as the 24 VDC power supply output terminal. (Note:
The power supply connected to the “IN” terminal must have a capacity high enough
to supply power to the equipment connected to the “OUT” terminal.)
Using this function, the “OUT” terminal can be used as a 24 VDC power supply for
each BL series connected in the multi-drop link configuration. (For a connection
example, see p. 19.)
To operate the N-400, be sure to use a 24 VDC power supply. Using a power
supply exceeding 24 VDC or using an AC power supply may damage the unit.
If your system must comply with UL regulations, be sure to use the power
supply with NEC class 2 output.
24V DC IN
TIM
SG + -
COM
RS-485
+ –
24V DC IN
+ –
5 mm max.
6 mm min
2.0 mm
max.
24V DC IN
–
+ –
24V DC IN
+ –
24 VDC
+
Symbol Description Signal direction
TIM Trigger input Input
COM Common terminal for trigger input Input
RS-485 SG RS-485 signal ground –––
RS-485 + RS-485 + terminal Input/Output
RS-485 - RS-485 - terminal Input/Output
24 VDC OUT 24 VDC power output + terminal Output
24 VDC power output - terminal Output
24 VDC IN 24 VDC power input + terminal Input
24 VDC power input - terminal Input
CAUTION