6.5
Instructions for electrical installation when the ambient temperature can fall below
0 °C
NOTE
For mounting instructions,
see "Instructions for mounting the device when the ambient
temperature can fall below 0 °C", page 33
All device variants can also be operated at low ambient temperatures. For details,
6.5.1
Prerequisites
•
Required supply voltage:
•
Use SICK standard cables for the specified ambient temperature range, see
°
°
•
Do not operate the device at ambient temperatures below 0 °C when mounting or
connection work is being carried out.
•
Only carry out connection work at ambient temperatures between 0 °C and
+50 °C. Secure the connecting cables.
•
The side cover for the USB interface and the microSD card slot must be screwed
tight to the device.
•
All cables connected to the device must be clamped. Unused M12 electrical con‐
nections must be fitted with screw-on protective caps (for male connectors) or
sealed with plugs (for female connectors) as supplied.
•
RFU63x: Unused connections for external antennas must be fitted with metal
screw-on protective caps (as supplied).
•
When operating the device at the lower limit of the permissible ambient tempera‐
ture range (
), 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 initialization, the device can immediately be
addressed by the SOPAS ET configuration software.
Table 11: Behavior of the device when switched on at low temperatures
Internal temperature of
housing
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 min.
From –20 °C
“Ready” LED permanently 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 sen‐
sors to measure its internal temperature. This is performed by the device while booting.
6
ELECTRICAL INSTALLATION
54
O P E R A T I N G I N S T R U C T I O N S | RFU63x, RFU65x
8014335/ZTL9/2018-10-14 | SICK
Subject to change without notice
