OSRAM OPTOTRONIC Constant current LED power supplies with 3DIM - Manual (Page 10)

10
LEDset SPECIFICATIONS
2.3.5. Color coding
2.3.7. Fault conditions/troubleshooting
2.3.6. Cable length
2.3.7.1. Incorrect wiring 2.3.7.2. Missing control wire (Vset)
The color coding for the connector of the LEDset interface is
defi ned as follows:
LED+ and LED- are the power outputs of the control gear.
The position and order of the terminals can vary between the
different LEDset ECG types.
The maximum length of LEDset cables should not exceed
2 m. Further limitations to cable length generally derive from
EMI emission or immunity issues or directly from product
specifi cation details. For detailed information, please refer to
the datasheet or instruction sheet of the respective LEDset
control gear.
The LEDset interface has been designed to inherently pro-
tect itself and the LED module against incorrect wiring on the
secondary side of the control gear. Incorrect connections
between LED+ and Vset or GNDset can irreversibly damage
the ECG.
Other possible incorrect wirings on the secondary side do
not affect the operation of the ECG once they are removed
(irrespective of problems regarding the connected external
LEDset ECGs).
LEDset is an interface intended for the current setting and
thermal management of an LED module. If the Vset terminal
is not connected to the control unit, the thermal protection of
the LED module and its correct current setting will not work.
This fault condition may result in an undetected overheating
of the LED module. In order to protect the LED module in
this condition, the absence of a control signal (Vset open or
Vset ≥ 11 V) is detected and the ECG is shut down or set to
its minimum current (see fi gure 3).
Table 3: Color coding.
LED+ Red
LED- Black
LEDset GNDset Gray
LEDset Vset Violet
LEDset +12Vset Blue