PISA-B-812-B1
PISA-B-812-B4
Apr. 2021 / Rev. 0.1 DS-PISA-B-812-Bx-xx-EN
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All parameters are specified at 24Vdc input voltage, 8x5A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
18. Environment
Operational temperature
-25°C to +70°C (-13°F to 158°F)
The operational temperature is the ambient or
surrounding temperature and is defined as the
air temperature 2cm below the device.
Storage temperature
-40°C to +85°C (-40°F to 185°F)
For storage and transportation
Output derating
1A/°C
B60°C and +70°C (140°F to 158°F), see
Fig. 18-1
2.5A/1000m or 5°C/1000m
For altitudes >2000m (6560ft), see Fig. 18-2
The derating is not hardware controlled. The user has to take this into consideration to
stay below the derated current limits in order not to overload the unit.
Humidity
5 to 95% r.h.
According to IEC 60068-2-30
Atmospheric pressure
110-54kPa
See Fig. 18-2 for details
Altitude
Up to 5000m (16 400ft)
See Fig. 18-2 for details
Over-voltage category
N/A
Impulse withstand voltages 1.5kV
Between input and chassis (according to IEC
60664-1 over-voltage category II)
Degree of pollution
2
According to IEC 60664-1, not conductive
Vibration sinusoidal
2-17.8Hz: ±1.6mm;
17.8-500Hz: 2g
2 hours / axis
According to IEC 60068-2-6
Shock
30g 6ms, 20g 11ms
3 bumps per direction,
18 bumps in total
According to IEC 60068-2-27
Shock and vibration is tested in combination with DIN rails according to EN 60715 with
a height of 15mm and a thickness of 1.3mm.
Fig. 18-1: Output current vs. ambient temp.
Fig. 18-2: Output current vs. altitude
