5
Electrical installation
Notes on electrical installation
•
The electrical installation must only be performed by an electrically qualified person.
•
Standard safety requirements must be met when working on electrical systems.
•
Electrical connections between the read/write device and other devices are
only allowed to be established or separated in a voltage-free state. Other‐
wise, there is a risk of damaging the devices.
•
When using connecting or extension cables with an open end, make sure
that bare wire ends are not touching (risk of short-circuit when the supply
voltage is switched on). Wires must be appropriately insulated from each
other. This also applies to unused wires.
•
Wire cross-sections in the supply cable from the customer’s power system
must be designed in accordance with the applicable national standards.
•
Connect the device only to the permissible supply voltage,
•
If the supply voltage is not supplied via the optional CDB620 connection
module, the device must be protected by a separate 0.8 A slow-blow fuse at
the start of the supply circuit.
•
All circuits connected to the device must be designed as SELV circuits. The
voltage supply or power supply unit must satisfy SELV requirements in accor‐
dance with the currently applicable EN 60950-1. (SELV = Safety Extra Low
Voltage).
NOTE
The voltage supply via a power supply unit must be capable of buffering
a brief power failure of 20 ms.
WARNING
Risk of injury and damage caused by electrical current!
As a result of equipotential bonding currents between the device and other
grounded devices in the system, faulty grounding of the device can give rise
to the following dangers and faults:
•
Dangerous voltages are applied to the metal housings.
•
Devices will behave incorrectly or be destroyed.
•
Cable shielding will be damaged by overheating and cause cable fires.
Remedial measures
•
Only skilled electricians should be permitted to carry out work on the
electrical system.
•
If the cable insulation is damaged, disconnect the voltage supply imme‐
diately and have the damage repaired.
•
Ensure that the ground potential is the same at all grounding points.
•
Where local conditions do not meet the requirements for a safe earthing
method, take appropriate measures (e.g., ensuring low-impedance and
current-carrying equipotential bonding).
NOTE
For measures for eliminating hazards, see the “Electrical installation” chapter
in the RFU62x RFID read/write device (UHF) operating instructions on the
product page on the Internet at
NOTICE
Risk of damage to the device due to reverse polarity of the supply voltage!
The supply voltage input for the device is designed with internal circuit protec‐
tion to provide reverse polarity protection. The internal functional earth, which
also corresponds to the negative pole of the supply voltage for the device, is
connected directly to the metal housing of the device due to reasons relating
to high frequency.
If the supply voltage is polarity-reversed, this will not cause any damage pro‐
vided that the following conditions are met for the device:
The device is not connected in an electrically conductive manner, either via
other cables or via its housing, to other peripheral devices which use the
same reference potential.
NOTE
For a more in-depth examination, see the “Electrical installation” chapter in
the RFU62x RFID read/write device (UHF) operating instructions on the prod‐
uct page on the Internet at
5.1 Connecting the device electrically
NOTE
The USB interface of the device is used in industrial environments only as a
service interface for temporary use (e.g. for configuration, troubleshooting).
Permanent use in operational use of the system as a host interface is not
intended.
NOTE
The numbering of the data interfaces (Aux 1, etc.) in the following block dia‐
grams provides a better overview, but is not shown in configuration tools
such as the SOPAS ET configuration software.
RFU620-101 xx: Ethernet variant
RFU62x-
101xx
Connection
module
SOPAS ET
SOPAS ET
"Power/Serial Data/CAN/I/O"
(Aux 1, Host 1)
...
...
1 2
V
S
GND
PC
"Ethernet" (Aux 2)
Ethernet
Ethernet
Cable
8
Cable
7
6
11 10 12
Trigger
sensor
SGND
Sens 1
V
S
1
Out
GND
V
S
2
3
Configuration
Reading result
display
Transponder
access
Reading
diagnostics
Cable
4
"USB" (Aux 3),
for temporary use only
5
USB
USB
Figure 5: Commissioning: Electrical connection block diagram of the
RFU620-101xx together with the optional connection module
1
Trigger sensor for read cycle
2
Supply voltage V
S
3
CDB620, CDB650-204 or CDM420 connection module
4
Adapter cable (male connector, USB, Micro-B type/male connector,
USB, type A)
5
USB, alternative to Ethernet Aux port. The USB interface is only for
temporary use as a service interface.
6
Configuration with SOPAS ET, prepared representation of the read
result, transponder access or reading diagnostics
7
Adapter cable (male connector, M12, 4-pin, D-coded / male connec‐
tor, RJ-45, 8-pin)
8
For CDB620 and CDM420: Adapter cable (female connector, M12,
17-pin, A-coded / male connector, D-Sub-HD, 15-pin)
For CDB650-204: Connection cable 1:1 (female connector, M12, 17-
pin, A-coded / male connector, M12, 17-pin, A-coded)
“Power/Serial data/CAN/I/O” connection
3
1
7
2
6
5
4
8
13
14
17
15
9
10
12
16
11
Figure 6: Male connector, M12, 17-pin, A-coding
Pin assignment of the “Power/Serial data/CAN/I/O” connection (M12)
Pin
Signal
Function
1
GND
Ground
2
V
S
Supply voltage
3
CAN L
CAN bus (IN/OUT)
4
CAN H
CAN bus (IN/OUT)
5
TD+ (RS-422/485), Host
Host interface ()
6
TD– (RS-422/485), Host
TxD (RS-232), Host
Host interface (sender-)
7
TxD (RS-232), Aux
Aux interface (sender)
8
RxD (RS-232), Aux
Aux interface (receiver)
9
SensGND
Digital input ground
10
Sensor 1
Digital input 1
11
RD+ (RS-422/485), Host
Host interface (r)
12
RD– (RS-422/485), Host
RxD (RS-232), Host
Host interface (receiver–)
13
Result 1
Digital output 1
14
Result 2
Digital output 2
15
Sensor 2
Digital input 2
16
N.c.
–
17
N.c.
–
–
–
Screen
“Ethernet” connection
1
4
3
2
Figure 7: M12 female connector, 4-pin, D-coded
Pin assignment of the “Ethernet” connection
Pin
Signal
Function
1
TD+
2
RD+
R
3
TD–
Sender–
4
RD–
Receiver–
8015928/10XW/2019-12-12/en
RFU62x | SICK
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