Engineering Documentation

Chapter 4 – Equipment Controllers
BACnet DXR2 Room Automation Station
125
-3002 123 | 231
Fig. 69: Connecting Power Cable.
Maximum Apparent Power (VA) for Transformer Sizing.
Base Model
1)
Base
Load
2)
Max. Load
Triac Output
AC 24 V~
250 mA
Each
3) 4) 9)
Max. Load
all Aux.
Outputs
AC 24 V~
5)
Max.
Load
KNX PL-
Link (at
50 mA)
6)
Max. Load
DC 24 V+
(2.4 W)
7)
Max. Allowed
Power
8)
Consumption
Including
Connected Field
Devices
DXR2.E12P
8 6 x 6 = 36 12 4 — 60
DXR2.E18
8 8 x 6 = 48 18 4 6 72
DXR2.E17C
8 4 x 12 = 48 18 2 3 79
DXR2.E10PL
11 4 x 12 = 48 - 4 - 63
DXR2.M11
6 6 x 6 = 36 12 4 — 58
DXR2.M12P
6 6 x 6 = 36 12 4 — 58
DXR2.M17C
8 4 x 12 = 48 18 2 3 79
DXR2.M18
6 8 x 6 = 48 18 4 6 70
DXR2.M10PL
10 4 x 12 = 48 - 4 - 62
DXR2.T12P
11)
6 6 x 6 = 36 12 4 — 58
DXR2.T18P
11)
6 8 x 6 = 48 18 4 6 70
1)
Maximum Apparent Power applies to Base Model only. See the appropriate automation station
application manual for information about reducing power requirements.
2)
Base load includes controller and I/O not including field device loads in other columns.
3)
Each Triac switches up to 6 VA; use interposing relay for field devices requiring greater load.
4)
Use AC 20.4V~ minimum. For DXR2 controller power trunk calculations, refer to
Chapter 2 –
Network Electrical Systems [
➙
27]. Use AC 19.5V~ for Actuating or Lab DXR2.
5)
Maximum power is available at any V~ terminal or shared between all V~ terminals.
6)
Switch off PL-Link supply and use external KNX power supplies when KNX device load exceeds
maximum.
7)
Calculate 1 VA for each 0.4 W used by external field devices.
8)
Total all power used, maximum allowed power listed on product rating label must not be exceeded.
9)
Maximum load Triac output AC 24V~ 500 mA each for Actuating or Lab DXR2 or DXR2.
10)
For thermal valve actuators (starting current) with pulse width modulation 5...50% and pulse length of
ca. 1 s.
11)
P1 DXR automation station.