User Manual

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All key data at a glance
Selection and ordering data
Type Product title DT Order no.
PU
(Unit, set, M)
PS/P unit
PG
Weight per
PU (kg)
Price
N 554D31 Universal dimmer N 554D31 A 5WG1554-1DB31 1 1 0.330
Connected load depending on lamp type*
With bundling of
Lamp type
 channel  channels  channels  channels
Dimmable LED
Mode of operation: Leading-edge control
≤ VA*⁾ ≤ VA*⁾ ≤ VA*⁾ ≤ VA*⁾
Dimmable LED
Mode of operation: Trailing-edge control
≤ VA*⁾ ≤ VA*⁾ ≤ VA*⁾ ≤ VA *⁾
Low-voltage halogen lamps with magnetic transformers
 VA  VA  W  VA
Low-voltage halogen lamps with electronic transformers
 VA  VA  VA  VA
High-voltage halogen lamps
 W  W  W  W
Incandescent lamps
 W  W  W  W
*⁾ The maximum connected load at the output depends on the lamp type and mode of operation (leading-edge or trailing-edge control).
Reliable dimming of LEDs
Digitalization is uniting the real and
virtual world. Modern lighting con-
cepts can be realized through innova-
tive lighting options. In addition to
basic functions like switching lighting,
the universal dimmer also offers
comfort functions like dimming with-
out changing the cabling, so that all
switchable standard bulbs can be
switched on and dimmed via a normal
socket. This allows high-quality prod-
ucts to be displayed in stores at differ-
ent light intensities, which positively
influences the customer’s perception.
The integrated scene control makes it
possible to save several levels of light
intensity for different situations and
apply them when required.
Channel bundling of up to four
channels for high output
Strong illumination can be realized by
bundling channels up to  VA.
Bundling two channels increases the
output to  VA and  VA. Bun-
dling three channels increases the
output to  VA and four channels to
Adjustable dimming curves
For greater comfort and flexibility, the
universal dimmer offers the option to
adjust the dimming behavior of LEDs
so that it resembles that of conven-
tional bulbs. The graph shows the
typical dimming behavior of an LED
compared with a bulb. In the ETS,
users can adjust the setting of the LED
dimming curve to parametrize the
control of brightness relative to dim-
ness. These bulbs can be dimmed
brighter or darker in the mid-dim
region.
, VA. Adjacent channels can be
bundled as follows: A+B|C|D, A|B+C|D,
A|B|C+D, A +B|C+D, A+B+C|D, A|B+C+D
and A+B +C+D.
Bulb
LED
Brightness in
percent
Illuminance in percent
Technical data
Universal dimmer N 554D31
• Four outputs for switching and dimming of resistive,
inductive, and capacitive loads
• Automatic adjustment to leading-edge or trailing-edge
control, depending on the type of load
• Rated operational voltage AC  V
• Rated frequency  and  Hz
• Rated power at +° Celsius ambient temperature: up to 
VA per output, up to , VA with bundling of adjacent
outputs, with no minimum load per output
• Electronic protection per output against overload, short
circuit, and temperature increase
• Maintenance-free terminals for connection and through-
wiring of untreated single-core, stranded, or multi-core
conductors, .....mm
• Manual operation buttons on the device for switching,
dimming, and activation of direct-mode operation
• Bus-powered electronics
• DIN rail-mounted device for mounting on rail TH accor-
ding to DIN EN 
• Building site function for bundling the outputs and swit-
ching the building site lighting without prior configuration
of the device via ETS
• Objects for surveillance device function and retrieving status
values
• Per output with selectable operation mode
• Object Central Switching with separately configurable on/off
delay selectable
• Separately adjustable dimming time from zero to  percent
for switching on/off and dimming brighter/darker
• Switch an output on or off by dimming brighter/darker
• Configurable dimming curves for optimizing the dimming
operation
• Configurable maximum and minimum dimming value via
parameter and object
• Adjustable blocking time for sending status objects after
restart and bus voltage recovery
• Integrated -bit scene control, output can be linked in up to
eight scenes
• Additional night mode object for time-limited switching on
the output at night
• Post-triggering of the On period (On-period extension) in
time-switch mode up to a selectable maximum on-period
extension via repeated post-triggering (x, x, x, x)
• Selectable counting with threshold monitoring: operating
hours, load cycles
LED dimming behavior
adjustable similar to a bulb