SICK RFU63 Series - Connecting the supply voltage

•
Unused connectors for external antennas are fitted with screw-on metal protective
elements, as delivered.
•
When operating the device at the lower limit of the permissible ambient tempera‐
ture range (see "Technical data", page 85), do not expose the device to strong air
flows (e.g. ventilation system, wind).
6.5.2 Behavior of the device when switched on
After application of the supply voltage and successful initialization, the device can be
addressed using the SOPAS ET configuration software.
Table 10: Behavior of the device when switched on at low temperatures
Housing internal tempera‐
ture
Behavior
Below –25°C “Ready” LED continuously flashes yellow.
Device is not operational because the temperature is below the
specified minimum limit value of -25°C (–30°C
1)
).
–25°C (–30°C
1)
) ...
–20°C
“Ready” LED continuously flashes green (warm-up phase).
Device is not operational (communication channel still disabled)
until the internal temperature has increased to –20°C as a
result of the heat generated by the electronics. Duration approx.
2minutes.
From -20°C “Ready” LED lights up green.
The device has started regular operation.
1)
For Firmware Version V2.02
Once the supply voltage has been applied, the device uses integrated temperature
sensors to measure its internal temperature. This is performed by the device while
booting.
6.6 Connecting the supply voltage
6.6.1 Note on the supply voltage of the device
NOTICE
Risk of damage to the device due to reverse polarity of the supply voltage!
Reversing the polarity of the supply voltage may, under certain circumstances, damage
the device due to short circuit currents!
The supply voltage input for the RFID device is designed with internal circuit protection
to provide reverse polarity protection. For this purpose, there is a blocking diode in the
current path of the positive pole (see figure).
The internal ground corresponds to the negative pole of the supply voltage for the
device. The functional earth has a direct galvanic connection to the metal housing of
the device for RF-related technical reasons.
Depending on the mounting location of the RFID device and the reference potential of
the supply voltage, a reversal of the polarity of the applied supply voltage can lead to
the following two situations:
ELECTRICAL INSTALLATION 6
8027750//2022-12-15 | SICK O P E R A T I N G I N S T R U C T I O N S | RFU63x
49
Subject to change without notice