Status LEDs

Status LEDs 1:
Status LEDs for the supply voltages

LED

Display

Meaning

US
(control voltage)

off

The supply voltage US is not available.

green illuminated

The supply voltage US is available.

red illuminated

Red illumination of this LED has different meanings for different products:

  • EP1839-0042: Undervoltage of the supply voltage US.
  • Other products: Sensor supply overload.

In both cases all sensor supply outputs were switched off.

UP
(peripheral voltage)

off

The supply voltage UP is not available.

green illuminated

The supply voltage UP is available.

red illuminated
(EP1859-0042 only)

Due to overload (current > 0.5 A), the sensor supply generated from the supply voltage UP was switched off for all sensors supplied from it.