Range 3 for 220 V and
250 V operating voltage
18 binary inputs usable
for uninterrupted duty
(max. 3 in each group of 4
at the same time)
12 binary inputs usable
for uninterrupted duty
(max. 2 in each group of 4
at the same time)
6 binary inputs usable for
uninterrupted duty
(max. 1 in each group of 4
at the same time)
Heat-related limitations for the binary inputs on the IO233 input module (modular devices)
Switching thresholds Up to 40 °C Up to 55 °C Up to 70 °C
Range 2 for 110 V and
125 V operating voltage
All 48 binary inputs usable
for uninterrupted duty
All 48 binary inputs usable
for uninterrupted duty
36 binary inputs usable
for uninterrupted duty
(max. 3 in each group of 4
at the same time)
Humidity
Permissible humidity stress
(according to IEC 60068-2-30)
≤ 75 % relative humidity on the annual average
Up to 93 % relative humidity on 56 days a year
Transient condensation is permissible.
Arrange the devices so that they are not exposed to
direct sunlight or extreme temperature changes. This
will prevent condensation in the device.
Constant humid heat, 56 days 40 °C, 93 % relative humidity
Humid heat, cyclical 12 h + 12 h cycles
25 °C/55 °C/95 % relative humidity
Other Environmental Information
Maximum operating altitude above sea level
2000 m (6561.68 ft)
Minimum permissible atmospheric pressure 783.8 hPa
Technical Data
6.9 Environmental Conditions
SIPROTEC 5, Hardware Description, Manual 225
C53000-G5040-C002-F, Edition 06.2019
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