Settings

The dialog mask for the parameterization of the KL2751/KL2761 can be found under Settings.

Operating mode

Watchdog timer active (R32.2)
Here you can deactivate the watchdog (default: active).

Watchdog timer active (R32.2)
Here you can activate user scaling (default: inactive).

Dimming ramp absolute (R32.3)
Here you can switch the dimming ramp from relative (default) to absolute.

With the relative dimming ramp, the dimmer terminal requires the preset ramp time to ramp up the brightness from 0 to full scale control.
With the absolute dimming ramp the dimmer terminal requires the preset ramp time to perform the current specified brightness change.

	Absolute dimming ramp The use of the absolute dimming ramp is useful, for example, when you want to control two lamps with two dimmer terminals synchronously. Sample: Lamp 1 is lit with 10 % brightness, lamp 2 with 30 % brightness. Dimmer terminal 1 should now control lamp 1 and dimmer terminal 2 lamp 2 up to 50 % brightness. With an absolute dimming ramp, both lamps reach 50 % brightness at the same time.

User offset (R33)
You can specify the offset for the user-scaling here (default: 0).

Ramp time (R35)
You can select the ramp time here (default 500 ms).
Permissible values: 50 ms, 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s and 10 s

Timeout (R36)
Here you can specify the timeout time for detecting a fieldbus error (default: 100 ms).

Light value for timeout (on) (R37)
Here you can specify the light value for a timeout at which the load was switched on when it occurred (default: 50 %).

Light value for timeout (off) (R38)
Here you can specify the light value for a timeout at which the load was switched off when it occurred (default: 0 %).

Automatic recognition*: The dimmer terminal automatically detects the type of load (capacitive/resistive or inductive) and switches to trailing edge phase control or leading edge phase control (default).
Trailing edge control: typically used for capacitive loads (e.g. electronic ballasts) or ohmic loads (e.g. bulbs)
Leading edge control: typically used for inductive loads (e.g. transformers, conventional ballasts)
Rectifier, positive: only the positive half-wave is switched through to the load with leading edge phase control
Do not use this operation mode with firmware version 2E of the KL2751 or with firmware version 1E of the KL2761!
Instead, use the operation mode Rectifier mode, negative with these firmware versions!
Rectifier, negative: only the negative half-wave is switched through to the load with leading edge phase control

	*) Automatic recognition and long cable lengths Manual preselection of the operation mode is recommended in the case of long cables between the dimmer terminal and the load. Automatic load detection may fail, since inductive and capacitive line influences may lead to misinterpretation of the load.

Behavior after short circuit (R40)
Here you can define the behavior of the dimmer terminal following a short circuit on the load output.
The dimmer terminal is equipped with short-circuit current limitation. The current is limited to approx. 10 A to 15 A. Normally triggering of the fuse is therefore prevented. The short circuit current flows for less than 0.5 ms and is switched on automatically.

Remains switched off:
The user has to switch the system on again after a short circuit.
Switch on again (default):
Following the detection of a short circuit, the dimmer terminal attempts to resume operation and tests the line with a low voltage. If the short circuit has been eliminated, the dimmer terminal returns to the previous dimmer value.

Mains frequency (R41)
Here you can set the dimmer terminal to your mains frequency, default: 50 Hz