Switch output voltages

For each EtherCAT P port the output voltages US and UP can be switched individually.

Protective functions can prevent the switching-on of the output voltages.

A switched-on output voltage is signaled in two ways:

  • Status LEDs
  • Status bits in the process data:
         „DPO Inputs Channel n“ > „Status“ > „Status Us“
         „DPO Inputs Channel n“ > „Status“ > „Status Up“
         (where: n = 0 for X52, n = 1 for X53, n = 2 for X54, n = 3 for X55)

The output variable "DPO Outputs Device" > "Enable Control Via Fieldbus" defines whether the output voltages are switched manually or automatically.

  • „0“: automatic (factory setting)
  • „1“: manual

Inadvertent switching of output voltages.

If you change the value of "Enable Control Via Fieldbus", it is possible that the output voltages may be switched on or off.
To prevent that, match the values of the CoE indices (automatic switching) and output variables (manual switching) mentioned below to each other before changing the value of "Enable Control Via Fieldbus".

Automatic switching

You can specify whether the output voltages are automatically switched on after application of the supply voltage US.

The following table shows the correlation of the output voltages and the CoE indices that control the automatic switch-on.

EtherCAT P port

Output voltage

CoE Index

Name

X52

US

8000:02

„DPO Settings Ch. 1“ > „Default State Us“

UP

8000:03

„DPO Settings Ch. 1“ > „Default State Up“

X53

US

8010:02

„DPO Settings Ch. 2“ > „Default State Us“

UP

8010:03

„DPO Settings Ch. 2“ > „Default State Up“

X54

US

8020:02

„DPO Settings Ch. 3“ > „Default State Us“

UP

8020:03

„DPO Settings Ch. 3“ > „Default State Up“

X55

US

8030:02

„DPO Settings Ch. 4“ > „Default State Us“

UP

8030:03

„DPO Settings Ch. 4“ > „Default State Up“

Value range:

  • „1“: US/UP is switched on automatically when US is applied (factory setting).
  • „0“: US/UP remains switched off when US is applied.

The output voltages are switched on with a time offset. The time offset prevents the starting currents of the connected EtherCAT P devices adding together.
You can set the time offset in the CoE index F80E:11 "Startup Delay":

  • „0“: „Fast“
  • „1“: „Moderate“
  • „2“: „Slow“

Manual switching

Set "Enable Control Via Fieldbus" to "1" to switch output voltages manually via output variables.

EtherCAT P port

Output voltage

Output variable

X52

US

„DPO Outputs Channel 1“ > „Output Us“

UP

„DPO Outputs Channel 1“ > „Output Up“

X53

US

„DPO Outputs Channel 2“ > „Output Us“

UP

„DPO Outputs Channel 2“ > „Output Up“

X54

US

„DPO Outputs Channel 3“ > „Output Us“

UP

„DPO Outputs Channel 3“ > „Output Up“

X55

US

„DPO Outputs Channel 4“ > „Output Us“

UP

„DPO Outputs Channel 4“ > „Output Up“