Bosch 4306 Service Manual download pdf (Page 35)

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

4. Control circuits

Q10

L-

L+ L+

L+

Bb Bb

KDV/Bb1

+24V

+/- 10%

756

control

voltage

supply

Leistungsteil

Supply module

KDV 2

additional drive

modules

drive module

E-stop

control unit

end

position

OFF

Q10 = mains disconnect

RF = drive enable signal from controller

S1 = E-Stop

S2 = limit switch

S4 = power OFF

S5 = power ON

UD = message from KDV "power feed OK"

T1 = power transformer

Y1 = Take delay time of electrically released

holding brake of feed axes into account!

Do not apply velocity command until

100 ms after RF-ON!

SKDV23.fh3

Control circuit: • without dynamic brake

• NC control unit brakes the drives in an E-Stop

X10/6

X10/7

K10

power section

Bb1 = supply module ready (drive system)

Bb = drive module ready

F1 = power supply fuses

F2 = electronics and blower fuses

K1 = mains contactor

K3 = decouple Bb1

K4 = dynamic brake contactor

K10 = decouple thermal contact of power transformer

NCB = no command-to-zero with a fault if NC bridge closed

X10/11

X10/12

drive

module

NCBNCB

K10

Figure 4.6: Control circuits for a controlled braking with an E-Stop or power failure

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Bosch 4306 Service Manual Page 35

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