Siemens N 535D51 User manual

Gamma instabus Technical product information
Switching Actuator N 535D51, 8 x AC 230 V, 16/20 AX, C-load
Switching actuator N 535D51
For switching capacitive, inductive and resistive loads
Maintenance-free terminals for connecting and looping through solid, stranded and
fine-stranded conductors with conductor cross-sections from 0.5 to 2.5 mm²
Switching status display with operating capability for each output to test for correct
installation
Functions with configuration with ETS
Control functions:
oSwitching with status message, logic gate, central switching, timed switching, night
mode
oControl value input for analogous values can be configured as an alternative to the
switching input
oIntegrated 8-bit scene control and assign of each output to up to 8 scenes
Override functions: Manual ON, permanent OFF, locks, central override, forced control
Diagnostic functions: Counting of switching cycles with threshold monitoring of switch
cycles, counting of operating hours with threshold monitoring of operating hours, load
detection with threshold monitoring of load check, status messages

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Type overview
Type
Description
Article number
N 535D51
Switching actuator with Load Check
monitoring
5WG1 535-1DB51
Characteristics
Switching actuator N 535D51 can switch eight mutually independent groups of electrical consumers via
eight potential-free outputs.
The switching actuator can switch resistive loads (e.g. electric heater, incandescent lamps), inductive
loads (e.g. motor, low-voltage halogen lamps with upstream wound transformer) or capacitive loads
(e.g. low-voltage halogen lamps with upstream electronic transformer).
The device is suitable for switching loads with high inrush current spikes, particularly for fluorescent lamp
loads (AX) as per DIN EN 60669-2-1.
The permissible lamp loads are listed in the “Technical data” section.
The device is a rail-mounted device in N dimension for installation in arrangements and is installed on
35-mm rails as per standard IEC 60715. The switching actuator is connected to the bus connection with
a bus terminal block. The power supply is supplied via the bus voltage (no additional power voltage is
required). Every actuator output has a potential-free relay with switch position display. Via the relay, the
switch position can be changed with a tool.
Every actuator output has one terminal each for the supply voltage (rated operating voltage AC 230 V)
and the switched load.
The maintenance-free terminals are for connecting solid, fine-stranded and stranded conductors with
conductor cross-sections from 0.5 to 2.5 mm2. Stranded and fine-stranded conductors can be plugged
into the terminals without ferrules.
The terminals have two terminal connections each, allowing, for example, the looping through of the
supply voltage from one actuator channel to the next.
Each of the outputs (relays) can be assigned different functions depending on the application, i.e.
switching actuator N53x consists of the device (hardware) and the application program (software).

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Technical design
Position and function of the connections and labeling
E GF H9L 10 11L 12 µ13L 14 15L 16
A CB D1L 23L 4µ5L 67L 8
1
2
3
4
5
6
Pos.
Element
Function
1
KNX bus terminal blocks, screwless
Connect KNX bus
2
Label field
Enter physical address
3
Connection terminals of the switching
contacts
Connect input and loads
4
Labeling of the switching contacts for channels A, B, C and D
5
Labeling of the switching contacts for channels E, F, G and H
6
Switch position display with manual operation

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Position and function of the operating and display elements
1
2
3
Pos.
Operating or display elements
Function
1
LED (red)
Button:
Address mode
Short press of button (< 2 s):
Activate address mode, display status
(LED on = active)
Very long press of button (> 20 s)
Reset to delivery state
(LED starts blinking after 20 s)
2*
Switch position display with
operation capability
Slider up position: relay contact open
Slider down position: relay contact closed
3*
Test contacts
Metering point for voltage testing
*The description of positions 2 and 3 applies analogously for the corresponding contacts and switches of
channels B, C, D, E, F, G and H.

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Connection example
The following connection example shows the connection of loads, e.g. lamps, for switching on/off via
the switch contacts of channels A, B, C, D, E and H.
+
KNX+
Un ~ 230 / 400 V
KNX-
BA DC E H
L1
L2
L3
N
InI
1L 23L 7L 9L 15L4
nI
5L 6
n
810 16
In
N 535D51
I = B16 A
I = B20 A
n
n
Maximum current via the load terminals ≤ 20 A
Technical data
Power supply
KNX bus voltage
DC 24 V (DC 21...30 V)
KNX bus current
20 mA
KNX power loss (internal consumption)
0.17 W
Outputs (load relays)
Number of load relays
(bi-stable relays, potential-free)
8
Contact voltage
Rated voltage (at 50/60 Hz)
230 V AC
Contact current
Rated current, AC*
16/20 A
Maximum inrush current (t = 150 µs)
600 A
Maximum inrush current (t = 250 µs)
480 A
Maximum inrush current (t = 600 µs)
300 A
AC1 operation (cos∅= 0.8)
20 A
AC3 operation (cos∅= 0.45)
16 A
Fluorescent lamp load AX*
20 A
Service life
Mechanical lifespan
1,000,000 switch cycles

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Outputs (load relays)
Electrical lifespan
100,000 switch cycles
Power loss
Maximum power loss per device at rated
output**
8 W
Switching capacities/load types, loads 16 A
(with vertical installation position and load connection at top)
Resistive load
3680 W
Minimum switching capacity
12 V
100 mA
Maximum DC1 breaking capacity
24 V
10 A
Maximum capacitive load
200 µF
Incandescent lamps
Incandescent lamp
3680 W
Halogen lamp 230 V
3680 W
NV halogen lamp with conventional transformer
(inductive)
2000 VA
Fluorescent lamps T5/T8
Uncompensated
3680 VA
Parallel compensated (at max. possible C)
2500 W
DUO switching
3680 VA
Compact fluorescent lamp
Uncompensated
3680 VA
Parallel compensated (at max. possible C)
3000 W
Load detection (load check)
Capture area AC
0.1…20 A
Accuracy
± 2 % of actual current value ± 20 mA
Load check ILoad AC (at rated voltage)
0…20 A, sinusoidal
Load check ILoad DC
is not captured
Physical specifications
Housing material
Plastic
Dimensions
See dimension drawing
Weight
604 g
Fire load
11 MJ

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Environmental conditions
Ambient temperature in operation
-5...+45 °C
Storage temperature
-20 to +70 °C
Transport temperature
-25 to +70 °C
Rel. humidity (non-condensing)
5...95 %
Climatic resistance
EN 50428
Protection settings
Degree of pollution (according to IEC 60664-1)
2
Overvoltage category (according to IEC 60664-1)
III
Protection class (according to EN 60529)
IP 20
Electrical safety, bus
Safety extra low voltage SELV DC 24 V
Electrical safety, device fulfills
EN 50428
EMC compatibility
EN 50428
Test mark
KNX, EAC, RCM, WEEE, China-RoHS
CE mark
Yes
Reliability
Failure rate (at 40°C)
943 fit
* 20 A only up to 35 °C ambient temperature and neighboring channel current-free
** at 16 A
Functions
Building site function
The building site function provided ex-factory enables switching the building site lighting on and off via
bus wall switches and actuators, even if these devices have not yet been commissioned with the
Engineering Tool Software (ETS).
Resetting the device to factory settings
A very long push of the programming button of more than 20 seconds resets the device to its factory
settings. This is indicated by an even blinking of the programming LED with a duration of 8 seconds.
All configuration settings are deleted. The building site function of the delivery state is re-activated.

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Functions with configuration with ETS
Version of the Engineering Tool Software and application program
Application
Version
Engineering Tool Software (ETS)
ETS 4.2 and up
Application program
9A0903
Behavior with bus voltage failure/recovery
In case of bus voltage failure, the current switch status and other values for each output are permanently
stored. On bus voltage recovery, these values are restored. For each channel, the configured actions are
also executed and, if applicable, new status values are reported.
Behavior on unloading the application program
After “unloading” the application program with the ETS, the unloaded device has no functions.
Timer functions
When configuring the device with ETS, one timer and night mode can be programmed. It is possible to
set delayed switching on/on and a warning before switching off occurs.
Overrides
Up to seven different override function blocks can be activated via ETS to override the automation
functions.
Switch cycle and operating hours count
To monitor use, with the right configuration it is possible to count and display the switch cycles and
operating hours of the device. The counting of operating hours can also be configured so that operating
hours are only counted when there is an active current flow.
Load Check monitoring
Optionally, the load check can be measured and the status sent via the bus. The load check can also be
monitored with regard to exceedance or falling short of load check limit values. An adjustment factor and
offset value can be specified.
8-bit scene control
Using 8-bit scene control switching states can be assigned to a scene and activated again later through
the scene.

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Schematic design of a switching actuator channel
The following diagram shows the functions of the switching actuator in a logical context.
Control value
Switching
Logic operation 1/2
Central switching
8-bit scene
Night mode
Timer period day
mode
Timer period night
mode
01
Logic operation 1/2
8-bit scene control
0 1
Flashing
0 1
Timer (day) Flashing
Timer
(night)
Override 1 – 7
Control value input
Number of
switch cycles
Operating hours
Override 1 – 7 Status override 1 – 7
Status
Send status value
Relay mode
Status number of
switching cycles
Status operating hours
Load check contact failure
Load check above/
below limit
Load check normal value
DiagnosticfunctionsOverride
functionsControlfunctions
Status switching
Normal
mode
t
t
Normal mode/flashing Normal mode/
flashing
Load check
Normally closed/open
0 1

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Notes
Safety
WARNING
The switching actuator actuator with load detection should only be
installed and put into operation by a certified electrician.
Ensure that the switching actuator can be activated.
Do not open the housing of the switching actuator with load
detection.
For planning and construction of electric installations, the relevant
guidelines, regulations and standards of the respective country are
to be considered.
Note on installation
The switching actuator with load detection can be used for fixed installations in interior spaces, for
installations in dry locations within distribution boards or small casings with DIN rail EN 60715-TH35.
Commissioning
Connecting loads to the switching contacts
Cu
0.5 … 2.5 mm²
2.5 mm²
Note on installation
Maximum current via the load terminals ≤ 20 A

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Connecting KNX
Cu
0.6 –0.8 mm
Checking the connection to the channels
The position of the relay contacts of a channel can be changed with a command via the bus or manually
using tools.
This test can be used to check whether the consumers of the channels have been connected correctly.
WARNING
Manual operation of the slide switch is intended only as an
emergency option or for testing during installation. No telegram is
sent to the bus and the changed switch position is not registered by
the device.
In case of bus failure/recovery, a manually switched relay is moved
into in the parameterized switching state.

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Test of KNX 24 V DC type SELV
This test can be used to check whether the bus connection cable is connected with the correct polarity
and whether device is supplied with bus voltage.
A very long push of the “programming” button of more than 20 seconds resets the device to its factory
settings.
Commissioning and function test
The voltage of a channel can be checked via test contacts.
Dimensions
90 mm
[3.54 in]
144 mm
[5.67 in]
61 mm
[2.40 in]
44 mm
[1.73 in]
55 mm
[2.17 in]

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Product documentation
Associated documents such as the operating and installation instructions, application program
description, product database, additional software, product image, CE declaration etc. can be
downloaded from the following internet address:
http://www.siemens.com/gamma-td
Support
Provision of operating/installation instructions
Return a defective device to the appropriate sales office.
Contact details for technical support in case of additional questions relating to the product:
[phone]
[phone]
[e-mail]
http://www.siemens.com/supportrequest
Technical Support:
http://www.siemens.com/supportrequest
FAQ:
https://support.industry.siemens.com/cs/ww/en/ps/faq
Published by:
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Theilerstrasse 1a
CH-6300 Zug
© 2019 Copyright Siemens Switzerland Ltd
Subject to change
Update: http://www.siemens.com/gamma-td