Bosch PIN8 N1 Guía para resolver problemas descargar pdf (Pagina 299)

100

101

MPH-02, MPB-02, MPD-02 Drive Control 6-87

DOK-INDRV*-MP*-02VRS**-FK01-EN-P

Due to hardware differences there are different requirements for mains

failure detection in supply units and converters:

• The supply unit has an integrated mains contactor, the mains voltage

must have been provided at the mains input terminals of the supply

unit before power is switched on.

• The converter doesn’t have an integrated mains contactor, the mains

voltage is only provided at the mains input terminals of the converter

by switching power on.

The mains voltage is therefore monitored when

• the mains contactor has been switched on in the case of supply units,

• the mains contactor has been switched on and drive enable has been

set in the case of converters.

Note: For converters the mains failure monitor is only convenient

when the drive is active ("AF"). The disconnection of power

(mains contactor disconnection) would otherwise always

cause the error message F2819 Mains failure although the

mains voltage is available without error at the mains contactor.

For this reason error reset would be required even if the

device status is correct!

When the failure of mains voltage is detected, the following immediate

measures are taken:

• The warning E2818 Phase failure/E2819 Mains failure (for supply

units) or E2819 Mains failure (for converters) is displayed.

• The message "failure DC bus supply" is signaled via the module bus.

In case the mains voltage fails permanently, the DC bus voltage is

continuously decreasing, the voltage value falls below the "minimum

voltage for power output" (see above). The following reactions are then

triggered:

• In the case of supply units, the integrated mains contactor is switched

off. The converter opens the "Rel1" contact via which the external

mains contactor has to be switched off.

• The error message F2819 Mains failure appears on the display of the

supply unit or converter.

• The message "readiness for operation of supply unit missing" is

signaled via the module bus.

If the voltage value, in the case of temporary mains voltage failure, does

not fall below the "minimum voltage for power output" (see above), there

are the following reactions:

• The warning E2818 Phase failure or E2819 Mains failure (for supply

units) or E2819 Mains failure (for converters) automatically

disappears from the display.

• The message "DC bus ready for power output" is generated via the

module bus again.

The behavior of the drives connected via the module bus in the case of

temporary mains failure depends on the reaction to undervoltage in the

DC bus that was set (configuration of power supply in parameter

P-0-0118).

There are the following possibilities:

• error reaction triggered according to setting in P-0-0119, Best

possible deceleration

• No error reaction, i.e. the message is handled as "non-fatal warning".

Mains Failure Detection

Immediate Measure at Mains

Failure

Permanent Mains Failure

Temporary Mains Failure

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Bosch PIN8 N1 Guía para resolver problemas Pagina 299

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