Siemens Climatix Series Basis Document page 52

Parameter
Disable high speed
Disable fan comp
Summer comp
Winter comp
Op hours settings
Fan steps type =
Separated
Fan steps type =
Separated (Forts.)
52 / 244
Basis Document Siemens Climatix Control System
Siemens
Page 52
BDCX.100820.01GB
Building Technologies
Range Function
-64.0...64.0 [°C] Stages greater than 1 (setpoint stage 1) are blocked (as with
manual operation) if the outside air temperature < Disable High-
Speed. All possible stages are enabled for outside air tempera-
ture > Disable HighSpeed + 1K. In Winter (at low outside air
temperature) the function prevents too great a volume of air from
discharging requiring heating, saving energy in this manner.
Limit to compensated step up (step up switching):
– No limit. For active stage 1 can be switched to stage 2, for
– None active stage 2 to stage 3. For analog controlled variable speed
drives (Fan control mode <> Direct or DirectVar), can be
stepped up per curve (see Fan compensation) for active
stage1 setpoint and stage2 setpoint.
– Compensation blocked for active stage 1(Stage1 setpoint).
Can be switched to stage 3 for active stage 2.
For analog controlled variable speed drives (Fan control mode
– St4age 1
<> Direct or DirectVar), can be stepped up per curve (see Fan
compensation) for active stage2 setpoint.
– Compensation blocked for active stage 1 and active stage 2.
For analog controlled variable speed drive the active stage 3
can be compensated to MaxForce.
– St4age1+Stage
2
-100....100% Present value for summer compensation. Go to parameter page
for summer compensation.
-100....100% Present value for winter compensation. Go to parameter page for
winter compensation.
Go to parameter page for fan maintenance messages.
5.4.2 General Operating Modes
The following relationship apply among the values for the parameters fan control
mode, TSP steps, fan step freq conv and fan steps type.
Fan control mode = Direct/DirectVar
DO1 DO2
Off 0 0
Stage1 1 0
Stage2 0 1
Stage3 0 0
Fan control mode <> Direct/DirectVar, Fan steps freq conv = 1
DO1
Off 0
Stage1 1
Stage2 1
Stage3 1
Fan control mode <> Direct/DirectVar, Fan steps freq conv > 1
DO1 DO2
Off 0 0
Stage1 1 0
Stage2 1 1
Standard application AHU
Functions
DO3
0
DOs each for supply fan and exhaust fan (if
0
selected)
0
1
DO1 each for supply fan and exhaust fan (if
selected)
DOs each for supply fan and exhaust fan (if
DO3
selected)
0
0
0
CE1P3977en_02
01.02.2010