Leuze BPS 348i - Accessories; Device Model with Heating

Device description
Leuze electronic GmbH + Co. KG BPS 348i 11
• Optional model with display
• Optional model with heating for use to -35°C
3.1.3 Accessories
Special accessories are available for the bar code positioning system. The accessories are optimally
matched to the BPS:
• Highly flexible, scratch-, smudge- and UV-resistant barcode tape
• Mounting devices for precise mounting with one screw (easy-mount)
• Modular connection technology via connection hoods with M12 connectors, spring-cage terminals or
with cables
3.1.4 Device model with heating
The barcode positioning system is optionally available as a model with integrated heating. In this case,
heating is permanently installed ex works.
NOTICE
No self-installation of the heating!
Ä Self-installation of the heating on-site by the user is not possible.
The heating consists of two parts:
• Front cover heater
• Housing heater
Features of the integrated heating:
• Extends the application range of the BPS to -35°C
• Supply voltage 18…30 V DC
• BPS release through an internal temperature switch (start-up delay of about 30min for 24VDC and
minimum ambient temperature of ‑35°C)
• Required conductor cross-section for the power supply: At least 0.75mm
2
NOTICE
Do not use ready-made cables!
Ä It is not possible to use ready-made cables.
The current consumption of the BPS is too high for the ready-made cables.
Function
When the supply voltage is applied to the BPS, a temperature switch initially only supplies the heating with
current (front cover heater and housing heater). During the heating phase (around 30min), when the inside
temperature rises above 15°C, the temperature switch connects the BPS to the supply voltage. This is fol-
lowed by the self test and the changeover to read operation. The PWRLED lights up, showing overall
readiness for operation.
When the inside temperature reaches approx.18°C, another temperature switch turns the housing heater
off and, if necessary, back on again (if the inside temperature drops below 15°C). This does not interrupt
the read operation.
The front cover heater remains activated until an inside temperature of 25°C is reached. At temperatures
above this, the front cover heater switches off and, with a switching hysteresis of 3°C, back on again at an
inside temperature below 22°C.