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Siemens Standard application AHU CE1P3977en_02
Building Technologies Functions 01.02.2010
– Active control-related settings such as alarm delay (default 60 s).
Min limit -0...40’000 [%; Pa] Depends on control type (fan control mode), an alarm is
triggered when it breaches this value.
Maximum deviation -0...40’000 [%; Pa] Depends on control type (fan control mode); maximum
allowed deviation between setpoint and actual value.
Start up delay 0…36000 [s] The function is activated after this period after a start.
Monitoring is switched off when the sensor fails.
5.4.6 Operating hours monitoring
None.
An alarm (low class) can be triggered for maintenance purposes when the present
operating hours for the supply air fan exceeds the operating hours limit.
Main Index > Unit > Fan Control > Op hours settings
Parameter Range Function
Op hours alarm – Passive
– Active
Present alarm status.
Enble ophours alarm – No
– Yes
Alarm enable.
Op hours limit 0…999999 [h] Operating hours limit to trigger an alarm.
5.4.7 Fan compensation
– Disable comp parameter setting (Main Index > Unit > Fan control > Disable
comp) must be observed for each compensation.
– All types of compensation that results in a step-up or switch, are added to the
overall compensation ∑ comp.
– All types of compensation that result in a step-down or switch, are subtracted
from the overall compensation ∑ comp.
– ∑ comp up and ∑ comp down are limited to 100 %.
• Temperature control:
– Fan cooling [%]
– Fan compensation [%] (Increase)
• From fan control:
– Summer compensation [%] (if positive).
– Winter compensation [%] (if positive).
• From humidification:
– Fan compensation [%] (Increase)
• From air quality control:
– Function normal [%]
• From temperature control:
– Fan Heating [%]
– Fan compensation [%] (Decrease)
Note
Prerequisite
Function
Parameterization
General notes
Percentage of ∑ comp up
Percentage of ∑ comp
down
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 57
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