Manual – Data Matrix Positioning System PCV80A-F200-R4-V19-SEW
19
4
Electrical connection
Installation
4.3.2
X4011: RS485 interface – externally of PFF-HM31
The following table shows information about this connection:
4.3.3
Shielding cables
The shielding of cables is required to suppress electromagnetic interference. Establish-
ing a low resistance or low impedance connection with the conductor or equipotential
bonding circuit is particularly important to ensure that these interference currents do not
become a source of interference themselves. Always use cables with braided shield,
never use cables with a foil shield. The shield is connected at both ends: on the PFF-
HM31A controller
and
on the PCV80A read head. Use the prefabricated connection ca-
bles as listed in chapter "Accessories". The grounding terminal available as an acces-
sory (see chapter "Accessories") allows for easy integration into the equipotential bond-
ing circuit.
In the following exceptional cases, the shielding of a connection at only one end might
be more favorable:
• If an equipotential bonding cable is not laid or cannot be laid.
• If a film shield is used.
Also observe the following point for shielding cables:
• Use metal cable clips that cover large areas of the shield.
• Route protective grounding connections to a common point in a star configuration.
• The cross sections of cables used for grounding should be as large as possible.
Function
RS485 interface for external components
Connection type
M12, 5-pin, female, B-coded
Wiring diagram
2354431115
Assignment
No.
Name
Function
1
+24V
DC 24 V output
2
RS -
RS485 data line (-)
3
GND
Reference potential
4
RS +
RS485 data line (+)
5
res.
Reserved
4
3
2
5
1
NOTICE
Connecting PCV80A to alternating current or excessive supply voltage, or incorrect
electrical connection with reversed polarity.
Damage to the device or malfunction.
• Connect the device to DC voltage.
• Ensure that the supply voltage rating is within the specified range of the sensor.
• Ensure that the connecting wires on the connection cables used are connected
properly.
