MainsVoltageMode

General

Type	ES
Devices supporting the parameter	Lexium LXM62 Power Supply
Traceable	–

Functional Description

Displays the mains voltage and is monitored while the DC bus is precharged.

Setting The Parameter for The Mains Input Voltage

NOTICE
	OVERCURRENT IN THE POWER SUPPLY When parameterizing, check the permissible DC bus voltage specified below as a function of the mains input voltage. Failure to follow these instructions can result in equipment damage.

Set the parameter MainsVoltageMode (see the following tables).

NOTE: Incorrect parameterization has been detected automatically and diagnostic message 8960 Invalid setting of the mains voltage has been triggered.

Permissible DC bus voltages

Mains input voltage	Permissible DC bus voltage
230 V (±10 %) 1 AC	260…560 V
230 V (±10 %) 3 AC	260…560 V
400 V (±10 %) 3 AC	> 460 V

Values for MainsVoltageMode

Value	Data type	Meaning
not valid / 0	DINT	The parameter is not evaluated.
230 V / 1	DINT	Mains input voltage set to 230 V.
400 V / 2	DINT	Mains input voltage set to 400 V.

Example Scenario

The following scenario can lead to a detected device fault:

Parameter MainsVoltageMode = 230 for 230 V (±10 %) 1 AC
Real mains voltage = 400 V (±10 %) 3 AC
During the precharging phase of the DC bus, a DC bus voltage of 460...560 V occurs due to contact interruptions of one or more phases. This value triggers no diagnostic message for the parameter setting MainsVoltageMode = 230.
After the DC bus charging however, a 400 V mains voltage will be present again if the DC bus relay is closed, for example, due to restoring the contact. This can cause the device to fail after several cycles.
If so, the parameter value MainsVoltageMode = 230 V and the real mains voltage of 400 V are saved in the device operating data.

NOTE: Modifications to the parameter are only applied during the Sercos phase up (communication phase 0 => communication phase 4).