CM2N3204E / 1.1999 Siemens Building Technologies
16/20 Landis & Staefa Division
Data point values and measured values can be called up under certain data point
numbers.
The controller is supplied with all values factory-set (bold printing). These factory-
settings are selected such that the controller is suited for the majority of plants.
Each of them can be changed, if required. The factory-set data are stored in non-volatile
memory.
No. Description Range Factory-
setting
1 B9 Frost temperature −50.0...+150.0 °C (Read value)
2 Z Input variable −50.0...+150.0 °C/ (Read value)
0...2000 ppm
3 F91 Common fault relay OFF/On (Read value)
4 E7 Control input 1
1)
OFF/On (Read value)
5 E8 Control input 2
1)
OFF/On (Read value)
6 Y30 Minimum limitation 0...100 % 0 %
7 Fan speed 1/2 1
8 Setpoint pair (Comfort/Economy) Co/Ec Ec
9 Room temperature limit heating 0...30 °C 15 °C
10 Room temperature limit cooling 20...50 °C 30 °C
11 Minimum operating time 00.00...12.00 hh.mm 00.30 hh.mm
12 Room temperature limit 10...50 °C 22 °C
13 Outside temperature limit 5...30 °C 12 °C
14 Delta 1...20 K 5 K
15 Minimum operating time 00.00...12.00 hh.mm 00.30 hh.mm
16 Frost alarm value 2...30 °C 5 °C
17 Standby controller 2...50 °C 25 °C
18 P-band frost protection controller 1...30 K 5 K
19 P-band standby controller 1...200 K 7 K
20 TN standby controller 00.00...10.00 mm.ss 03.00 mm.ss
21 Disabling of fan speed 2 acc.
to outside temperature B4
14)
−50...+150 °C −−15 °C
22 Delta for heating 1...10 K 4 K
23 Delta for cooling 1...10 K 3 K
24 KE room (cascade authority) 0...20.0 2.0
25 TN 00.00...40.00 mm.ss 08.00 mm.ss
26 P-band heating 1...200 K 20 K
27 TN heating
2)
00.00...10.00 mm.ss 02.30 mm.ss
28 P-band heat recovery 1...200 K 15 K
29 TN heat recovery
2)
00.00...10.00 mm.ss 02.00 mm.ss
30 P-band cooling 1...200 K 15 K
31 TN cooling
2)
00.00...10.00 mm.ss 02.00 mm.ss
32 Switching interval SA 1...100 % of Y20 20 %
33 Switching differential SD 1...100 % of Y20 10 %
34 Starting point 10...50 °C 25 °C
35 End point 10...50 °C 30 °C
36 Delta −10...+10 K 2 K
37 Starting point −30...+20 °C 5 °C
38 End point −30...+20 °C −20 °C
39 Delta −10...+10 K 1 K
40 E1 Fire/smoke A / b A
41 E2 Air flow supervision A / b A
42 E3 Overload pump/electric A / b A
43 E4 Overload chiller A / b A
44 E5 Overload fan A / b A
45 E6 AUX, freely available A / b A
46 B9 Frost alarm A / b A
Data point list for
normal operation
Current measured values
Limitation manipulated variable
Presettings
Unoccupied heating/cooling
mode
Night purging
Setpoints frost protec-
tion/standby controller
Parameters frost protec-
tion/standby controller
Displacement ventilation
Control parameters room
temperature controller
Control parameters supply air
temperature controller
Switching points compressor
Summer compensation
Winter compensation
Alarm priorities
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