Bosch 4306 Instrukcja Obsługi Pobierz pdf (Strona 39)

• DOK-POWER*-KDV*2.3****-ANW1-EN-E1,44 • 06.97

5. Interface descriptions

This makes it possible for the NC control unit to brake the drives to a standstill

with either a mains or phase failure. The power regenerated during braking

must be greater than the power consumed.

The Bb1 contact always switches the power supply off with a drive fault.

The superordinate control must guarantee that the drives are braked

with a closed NC bridge because the command-to-zero is dropped.

The superordinate control monitors the UD contact and brings the

drives to a standstill once the contact is open.

There will otherwise be an uncontrolled coasting of the drives if the

power supply system fails.

Do not use an NC bridge in digital drives with SERCOS interface. The

programmable error reaction of digital drives means a controlled

braking is possible without the bridge. The bridge prevents the

signal to the drive indicating there is a fault in the power supply.

Überw_Prinz.fh3

auxiliary voltage fails

bleeder and temperature

monitoring

error message from all drives

fault current monitoring

voltage in D.C. bus

less than / equal to 50V

voltage in D.C. bus

greater than / equal to 200V

mains phases functional

NH transistor output

switches to OVL

with fault

BVW opens

with fault

Bb1 contact

opens with fault

≥1

X 1/1

X 1/2

ϑ ≥ 80% ϑ

max

ϑ < ϑ

max

NCB

Signal to

drive units

operating

status + 15V

UD contact,

open with fault

Figure 5.3: Diagram of interfaces for monitoring and diagnostics systems

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 56 57

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