Operating Hours Counter, Unit Fan - Siemens SINAMICS DCM Operating Instructions Manual

10.16

Operating hours counter, unit fan

SINAMICS DCM converters with rated DC current of ≥210 A, are equipped with fans:
● Units <400 A: Two internally supplied fans
● Units ≥400 A: One fan that is connected to the line supply
Parameter r53136 displays which unit fan is used for the particular converter.
Operating hours counter
Every unit fan has an operating hours counter. The counter states are displayed at
parameter r50960 [0..4].
r50960[0..3]
r50960[4]
The operating hours counter is incremented, if
● SINAMICS DCM switches-on the corresponding fan AND
● it actually rotates
The operating hours counters for unit fans that are not available are not incremented.
Monitoring the fan lifetime
The planned lifetime for each fan is set at p50961[0...4]; the factory setting is 30000 hours.
Alarm A60165 is output 500 hours before the planned lifetime is reached. It is recommended
that the corresponding fan is replaced at the next opportunity when the system is not
operational (scheduled downtime).
If the lifetime for a fan is set to zero (p50961[0...4] = 0.0 hours), then the fan lifetime
monitoring for this fan is disabled.
The corresponding operating hours counter is reset to 0 by setting parameter p50962[0..4] to
1. This should be done each time that a fan is replaced!
See also the SINAMICS DCM List Manual, function diagram 8045.
The instructions on how to replace a fan are provided in Chapter 11.
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
Operating hours counter for the fans connected at the internal unit connectors
XV1 to XV4
For SINAMICS DCM Control Modules, operating hours counter for the fan
controlled via r53135[0].
i.e. the speed is higher than 5 % of the response threshold of the fan monitoring (this
does not apply to r50960[4])
Descriptions of functions
10.16 Operating hours counter, unit fan
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