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Siemens Desigo Desigo Room automation - Engineering, mounting and installation CM111043en_13
Smart Infrastrructure Electrical features of inputs & outputs 2020-04-30
8.3 Digital outputs (relays, triacs)
8.3.1 Admissible relay load
Type
TXM1.6R...
TXM1.6RL
TXM1.8RB
DXR2...
RXM21.1
RXM39.1
Data sheet N8175 N8177 N8178 N9204ff N3835 N3836
General use 4 (3) A 4 (3) A
Fan stages 4 (3) A 4 (3) A 5 (4)
Fan release 4 (3) A 4 (3) A 5 (4)
(Q34)
Electric reheater (4 (3) A) (4 (3) A) 1,8 kW
ohm load
(Q14)
Light 10 A
Blinds 3 A
8.3.2 Admissible triac load
Type TXM1.8T DXR2...
AC 230 V
DXR2...
AC 24 V
4)
RXM21.1
AC 230 V
DXR1...
AC 24 V
5)
Data sheet Signal type N8179 N9204,
N9206
N9205, N9207 N3835 A6V11393931
A6V11393933
A6V11393929
Max.
continuous
load
BO, MO 8 x 3 VA
3)
4 x 6 VA
4 VA
1)
6 VA 2 x 4.5 VA 12 VA
3-position 4 x 6 VA
3)
4 VA
1)
6 VA 2 x 4.5 VA 12 VA
PWM 0...100%,
Spring return
8 x 3 VA
3)
4 x 6 VA
4 VA
1)
6 VA 2 x 4.5 VA 12 VA
PWM 5...50% 8 x 3 VA
3)
4 x 6 VA
2 x 4 VA
1)
2 x 6VA
2)
2 x 4.5 VA 2 x 12VA
6)
Short time load per triac for
starting power in cold
condition
12 VA
2)
max.90s
6 VA
2)
max.300s
6 VA
2)
12 VA
2)
24 VA
5
Field supply AC 24 V 240 VA
3)
4 VA
1)
6 VA -- --
Field supply DC 24 V -- -- xx12P --
xx18 2.4 W
-- --
Sum for device 24 VA without
field supply
4 VA
1)
xx12P 72 VA
xx18 88 VA
9 VA DXR1.
E09 55 VA
E10 60 VA
M09 53 VA
1)
By choosing appropriate signal types, multiple actuators can be run at the same
time because of staggered activation of the triacs. Details see below.
2)
Thermal actuators with a starting power of 6 VA in cold condition:
If driven by a 5...50% PWM signal, they only count for 3 VA.
3)
T 10A fuse in the PXC3 / the power supply module / the bus connection module.
Caution! Use cable cross section suited for 10 A according to local
regulations.
4)
Each of the 6 / 8 triacs has a current limitation.
No fault messages in case of overload or short circuit.
5)
Two triacs share one resetting thermal fuse of 2 A. Therefore, thermal actuators
may use 1 A per triac for heat-up from cold condition.
6)
Thermal actuators with a starting power of 12 VA in cold condition:
If driven by a 5...50% PWM signal, they only count for 6 VA.