Bosch 4306 Service Manual download pdf (Page 17)

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

3. Guidelines for installation and electrical connections

3.7. Additional capacitance on the DC bus

It is possible to connect additional capacitors (CZ 1.02) or additional capacitance

modules (TCM) to the DC bus to increase the capacity of the KDV 2.3.

An additional capacitance of 4 mF is needed to utilize this.

In a few applications, it might be necessary for the drives to back up in the event

of a power failure. The energy stored in the DC bus can be used for this action.

The DC bus capacity can be increased with the use of additional capacitors.

A maximum of 8 mF additional capacitors may be connected. Each mF of

additional capacitance can store up to 30 Ws.

3.8. Smoothing choke

The KDV 2.3 must be operated with a smoothing choke in the "L+ line" from

a DC bus load of 9Kw:

DC bus load

up to 9 kW

up to 15 kW

greater than 15 kW

Smoothing choke required

(see Section 7.6 for technical data)

none

GLD 13

GLD 12

Figure 3.8: Required smoothing choke

3.9. Electronics and internal blower power supply

Supply terminal: X10a/1 - X10a/3

Terminal diameter: maximum 1.5 mm

Terminal voltage: AC 230 V; 50 to 60 Hz

Terminal capacity: 500 VA (if electronics supply reaches maximum

load)

Recommended fusing: Circuit breaker 10 A (tripping characteristic C:

magnetic release between 7 to ten times rated

current)

Electronics supply

External blower supply

Supply terminal: X13

Terminal diameter: maximum 1.5 mm

Terminal voltage: LE3-220 blower: AC 220/230 V; 50 to 60 Hz

LE3-115 blower: AC 110/115 V; 50 to 60 Hz

Terminal capacity: 70 VA for each blower

Increasing power

Energy capacitor for

power failures

Tap electronics power off of outer conductors L1 and L3 of the

power source (see terminal diagram in Section 3.1). NOTE: X10a/

1 and X9/l1 must have the same phase, and X10a/3 and X9/L3 must

also have same phase! The KDV 2.3 could otherwise be damaged!

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