Universal Dimmer UD-700-X2

The reliable Universal Dimmer has been developed to dim all via leading edge/trailing edge dimmable light sources (e.g. LED lamps). It requires no minimum load and dims flicker-free starting from just one LED retrofit lamp. Even a large number of LEDs is no problem for the dimmer.

Quick Facts

  • 2 channels 700W each or 1 channel 1400W
  • flicker-free dimming of LED lamps
  • automatic load detection
  • suppression of ripple control signals and mains interference
  • oscilloscope function
  • 1-10V / 0-10V
  • single-button dimmer

The Universal Dimmer is suitable for the reliable operation of high-voltage lamps, magnetic transformers, electronic transformers, ESL and LED retrofit lamps. Two separate dimmer outputs are available, each of which can be loaded with 700W. By configuration and parallel connection of the outputs the dimmer is loadable with 1x1400W.

Each channel can be parameterised separately for the corresponding load type (leading edge/trailing edge mode). The dimmer automatically checks the connected load by carrying out a short test after first applying the operating voltage to check whether the connected load can be operated with the desired setting.

The dimmer operates with an internal dimming resolution of 16 bits and thus meets the highest demands.
The factory-set properties such as dimming curves, minimum and maximum limits can be changed and optimised by the user himself.

Control types of the dimmer:

  • ISYGLT BUS protocol
  • DMX512 8Bit and 16Bit
  • stand-alone: 0-10V, 1-10V, push-button (single-button dimmer)
  • internal potentiometers
  • to the BUS protocols ISYGLT or DMX512, the internal potentiometers and voltage inputs can be parameterised as priority, merge operation or for the BUS failure


For ISYGLT users, the functions can be parameterised as usual in the ProgramDesigner. A free software tool is available for standalone and DMX users. This allows the dimmer to be optimised per parameter via USB or RS-485 data connection and internal data such as temperatures, voltages, peak currents and power to be displayed. An oscilloscope function is also integrated as a new feature. For the first time, the user now has an aid for displaying the current load - without dangerous measurements on the mains voltage!

An inspection of unknown light sources - e.g. new retrofit lamps - is therefore possible without additional measuring equipment. All you need is the connected UD-700-X2 dimmer, a USB cable (USB type A to Micro B m/m) and our free software.

Electrical Data

Mains supply 230V / 45 to 65 Hz
Mains fuse 1 x 230V automatic or GL fuse 10A
Output 2 x 230V short-circuit proof, 10W - 700W/VA per channel
or 1x 1400W/VA coupled
Power loss <0.5 ... 6W (Stand-by ... full load) per channel - total 12W at 2x700W load
1 (0)-10V sink current at 1-10V = 0.54mA
source current at hardware option "0-10V" = 0.14mA at 71kOhm
Insulation voltage 3500V (ISYGLT-BUS / mains)
Short-circuit protection electronic overload protection by current measurement
short-circuit cut-off within 10 milliseconds
Subnet (RS-485) max. 5.6V limitation by Z diodes
Connection screw terminals 1.5mm² pluggable
Operating temperature -10...+45°C
> at +50°C max. 60% connectable power
> at +55°C max. 50% connectable power
> +60°C max. 30% connectable power
Storage temperature -25...+70 °C
Humidity 0...85 % r.h. non-condensing
Protection class IP 30
Protection class I

Design, Dimensions, Weight

Design DIN rail housing
Dimensions WxHxD 106x90x59mm rail-mounted device (6 HP)
Weight 300 g

Ordering Data and Conformity

Type designation UD-700-X2
Article no. 80026503
Conformity CE

DIP switches in DMX operation

DIP switches in ISYGLT operation

DIP switches in stand-alone operation

Setting options via DIP switches

FunctionOperating mode
U input 1-10VControl via digital potentiometer from switch manufacturer, or 1-10V dimmer coupler (behaves like an ECG from fluorescent lamps - the 10V for the 1-10V dimming is supplied by the dimmer)
U input 0-10VControl via external control e.g. PLC with 0-10V (0-10V voltage is supplied from the PLC)
A/B/C/DSee table below
Res.Not assigned in this operating mode
Channel 1+2 coupledThe dimmer works with 1 channel, power 1x1400W. Connector between outputs LD1 and LD2 required.
Channel 1+2 separateThe dimmer works with 2 channel, power 2x700W. The LD1 and LD2 outputs must not be connected.
Single-button dimmerControl via standard buttons on terminals UE1 and UE2 against GND
Press briefly = on/off, press longer = dim
Analog 0(1)-10VAnalog control - in this position the DIP switches 3 are enabled for the selection 0-10V or 1-10V.


A/B/C/D DIP switch - Operating mode setting for ­­­­­­­DMX512 and stand-alone operation

DIP-ADIP-BOperating mode
OFFOFFAutomatic operating mode switching, the start value is predefined with the PC program on the "General" tab.
ONOFFTrailing edge
OFFONL­­­­­­­eading edge
DIP-CDIP-DSetting dimming characteristics such as min-max values, curves, etc. (see PC program for the UD-700-X2)
OFFOFFParameters of the 1st column, curve P-linear ("General" in the PC program)
ONOFFParameters of the 2nd column, curve DALI ("General" in the PC program)
OFFONParameters of the 3rd column, curve t-linear ("General" in the PC program)
ONONParameters of the 4th column (with preheating setting for ESL)
("General" in PC program UD-700-X2)

Function Indicators (LEDs on the Module)

redOffPOWERNo operating voltage
OnOperating voltage, no error voltage supply
blinkingToo high mains voltage (>400Vs)
3x blinkingNo valid parameters available
yellowOffBUSError in BUS wiring / no BUS signal detected
OnBUS is active, but communication processor receives no data
DMX: Data for the set address are not transmitted (telegram too short) or data format is wrong
RS485 test: Set address or data format is wrong
blinkingInterference-free data transmission / communication processor receives data
2x greenOffD1, D2Output "OFF", no error
OnOutput "ON", no error
blinking evenlyWarning/switching off when temperatures are too high:
Communication processor: 65°C / 75°C
MOSFET housing: 95°C / 105°C
1x blinking + pauseMessage in case of overload:
1. When exceeding the max. permitted peak current (>15A)
2. When the limit values for power loss (>8W/channel) or peak current (>10A) are reached
2x blinking + pauseMessage after switch-off at voltage peaks >450V
3x blinking + pauseFailure of communication with dimmer processor


Parameterisation with ProgramDesigner

For the first time, this dimmer offers separate parameterisation options for ISYGLT and DMX512 / stand-alone.

For DMX512 and stand-alone you will find the description of the possibilities here. In the ISYGLT ProgramDesigner you will find the parameterisation options for the ISYGLT operation:

  • parallel connection of the outputs from 2x 700W/VA to 1x 1400W/VA
  • leading edge or trailing edge control
  • setting the dimming curves
  • feedback of the dimmer status (diagnostic messages)
  • emergency operation in case of BUS failure

Pin Assignment

9-pole plug left

GND Reference potential (Ground) for the voltage inputs (0-10V) and BUS RS485 (internally bridged with the seventh terminal)
UE1 Control voltage input for the dimmer output LD1 (emergency function)
UE2 Control voltage input for dimmer output LD2 (emergency function)
+10V Power supply for external potentiometer(s)
GND Reference potential (Ground) for the voltage inputs (0-10V) and BUS RS485 (internally bridged with the first terminal)
A Subnet (BUS A, RS-485)
B Subnet (BUS B, RS-485)

6-pole plug right

LD1 Dimmer 1 load output 0...230V max. 700W/VA leading edge/trailing edge
LD2 Dimmer 2 load output 0...230V max. 700W/VA leading edge/trailing edge
L Mains voltage 230V (45Hz-65Hz)
N Neutral conductor
N Neutral conductor
PE Protective conductor

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Additional Equipment

  • USB cable
  • Dynamic Base Load for stable dimming of LED retrofit (already integrated in the UD-700-X2)


Article no.: 80026503

The reliable Universal Dimmer was developed to perfectly dim all dimmable illuminants (e.g. LED lamps). It requires hardly any minimum load and often dims flicker-free even from a single LED retrofit luminaire. Even a large number of LEDs is no problem for the dimmer.
+ shipping costs
  • kostenlose Anfrage / free request
    from 1 € 0.00 € 0.00