KEYENCE N-48, N-42 User Manual
Instruction
Manual
Power Supply Unit For BL Series
N-42
N-48
(with RS-232C/RS-422A conversion)
(with RS-485 multi-drop link)
1
CONTENTS
WARNING
CAUTION
Part Names ....................................................... 4
System Configuration........................................ 5
Connecting the Power Supply........................... 7
Input/output Connections .................................. 8
Clips Used for Terminals ................................... 9
Terminator Switch ............................................. 9
Connecting the BL Series ............................... 10
Connecting the Communication Interface....... 11
Using N-42 as RS-232C/RS-422A Converter . 14
Installation ....................................................... 16
Specifications .................................................. 17
Dimensions ..................................................... 18
SAFETY PRECAUTIONS
This manual describes how to install the N-42/N48 as well as its operating procedures and
precautions. Please read this manual carefully to
get the best from your N-42/N-48.
Safety precautions
Symbols
The following symbols alert you to important
messages. Be sure to read these messages
carefully.
Failure to follow instructions
may lead to injury. (electric
shock, burn, etc.)
CAUTION
This is a class B (EN55011 and EN55022: EMI
standard) product.
This is also a class A (EN55011 and EN55022:
EMI standard) product.
2
Note:
Failure to follow instructions
may lead to product
damage.
Additional information on
proper operation.
SAFETY PRECAUTIONS
CAUTION
General precautions
• At startup, be sure to check the functions and
performance of the N-42/N-48.
• We recommend that you take substantial
safety measures to avoid any damage in the
event a problem occurs.
• Do not open or modify the N-42/N-48 or use it
in any way other than described in the
specifications.
• When the N-42/N-48 is used in combination
with other instruments, functions and performance may be degraded, depending on the
operating conditions and the surroundings.
• Do not use the N-42/N-48 for the purpose of
protecting the human body.
Cautions Specific to the N-42/N-48
To use this power supply unit, observe the
following instructions:
• This unit uses a 24 VDC power supply.
Using a power supply exceeding 24 VDC or
using an AC power supply may damage the
unit.
• This unit is a precision instrument. Before
installing the unit, read the “INSTALLATION”
section carefully for correct mounting
instructions.
• Since this unit is a precision instrument, it
may be damaged if it is dropped. Be careful
when carrying and mounting the unit.
• Do not disassemble this unit. If the unit is
disassembled, we may not accept an order to
repair it.
3
PART NAMES
The following parts identification is common for
both the N-42 and N-48.
2 TRIGGER input
terminals
3 OK/NG output
terminals
4
1 READER port
READER
POWER SD RD
4
Power supply/interface
terminal block
5 Terminator switch
6 Communication status
indicator LEDs
7 POWER LED
No. Name Function
1 READER port Connects to a BL series
or RS-232C equipment.
2 TRIGGER Connect to a sensor for
input terminals trigger input.
3 OK/NG output Output OK/NG signals.
terminals
4 Power supply/ The 24 VDC power supply
interface terminal and
terminal block communication interface
(RS-422A or RS-485)
terminal are provided.
5 Terminator Turns ON/OFF the
switch terminator (termination
resistor: 100Ω).
6 Communication Indicates the RS-422A or
status indicator RS-485 communication
LED status.
7 POWER LED Lights when the power
is turned ON.
SYSTEM CONFIGURATION
■ N-42
BL series or RS-232C equipment
READER port
Sensor for trigger input
PLC
Trigger
input
OK/NG
output
N-42
POWER SD RD
N-42
READER
Maximum extension distance: 1.2 km
RS-422A
equipment
RS-422A
• When the N-42 is used as an RS-232C/RS-422A converter, connect the RS-232C equipment to the
READER port of the N-42.
• Turn ON the terminator of both the N-42 and the RS-422A equipment (termination resistor: 100 Ω).
5
SYSTEM CONFIGURATION
■ N-48
The following diagram shows the system configuration that uses the N-400 multi-drop unit as the
master unit and drives the BL series bar code readers in multi-drop link mode. For details of the multidrop link, see the N-400 User’s Manual.
Sensor for
trigger input
BL series
• Maximum number of
connectable units: 31
• Maximum total extension
distance: 1.2 km
N-400
RS-232C
N-48
*
*
RS-485
Host
• Only the BL-500/180 series enables the multi-drop link connection through the N-400 as shown
above.
• Turn ON the terminator of the equipment marked with an * in the above diagram (termination
resistor: 100 Ω) .
6
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