Siemens POL638 Series

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Siemens Standard application AHU CE1P3977en_02
Building Technologies Configuration 01.02.2010
Parameter Range Function
Hum control unit Type of humidity control.
Relative Relative humidity control.
Absolute Absolute humidity control.
CascRelAbs Cascade control with relative room and absolute supply air humidity
control.
Hum stpt selection Predefined variants for humidity setpoints.
Hum/dehum Humidification and dehumidification setpoint is entered directly.
+/- HalfDz Base setpoint and dead zone is entered:
Humidity setpoint = Base setpoint – half dead zone.
Dehumidification setpoint = Base setpoint – half dead zone.
Hum+Dz Humidification setpoint and dead zone is entered:
Dehumidification setpoint = Humidification setpoint + dead zone.
dehum-Dz Dehumidification setpoint and dead zone is entered:
Humidification setpoint = Dehumidification setpoint – dead zone.
Dehum tmp prio Dehumidification is reduced dependent on the heating output.
No Function not enabled.
Yes As of 90%, heating valve position reduces dehumidification.
Dew point control No
Yes
Dew point monitoring. Minimum limitation to supply air temperature
relating to dew point control.
Hum deviation
alarm
Monitors setpoint/actual value of humidification. An alarm is triggered
for deviations over a certain period.
No No monitoring.
Room/Exh Monitors room humidity only.
Supply Monitors supply air humidity only.
Sply+RmExh Monitors supply air and room humidity.
Humidifier pump No No humidifying pump.
Yes Humidifying pump without pump kick. Digital output for the pump.
Yes+Kick Humidifying pump with pump kick. A digital output for pump and acti-
vation of pump kick.
Pump kick: Pump is switched on for a short period after idling for a
longer period. This prevents lock up.
Hum pump alarm No Pump without alarm or feedback.
Alarm Pump with alarm. Digital input for pump alarm. Logical 1 = alarm, im-
mediately shuts down the pump.
Fdbk Pump with feedback. Digital input for feedback (logical 1 = Pump run-
ning).
Both Pump with alarm and feedback. Two digital inputs for pump alarm and
feedback.
Humidifier fdbk No Humidifier without feedback.
Yes Humidifier with feedback: Digital input for feedback is enabled (logical
1 = Humidifier running).
Cooling pump No No water cooling pump.
Yes Water cooling pump without pump kick. Digital output for the pump.
Yes+Kick Water cooling pump with pump kick. A digital output for pump and ac-
tivation of pump kick.
Pump kick: Pump is switched on for a short period after idling for a
longer period. This prevents lock up.
Cooling pump
alarm
No Pump without alarm or feedback.
Alarm Pump with alarm. Digital input for pump alarm. Logical 1 = alarm, im-
mediately shuts down the pump.
Fdbk Pump with feedback. Digital input for feedback (logical 1 = Pump run-
ning).
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 164