Bosch 4306 Service Manual download pdf (Page 37)

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

5. Interface descriptions

5.3. Electronics supply working

Transistor output NH, terminal X10/8

Maximum load DC 24V/100mA

Output NH

R >= 240

X10/8

X10/4

Ω

5.6

KDV 2.3

Ω

external protective circuits

+24V

SPKDV23NH

Operating no power to fault in auxiliary auxiliary voltage

status: the electronics voltage, DC bus functional

voltage functional

Output high-resistance low-resistance high-resistance

Figure 5.2: Protective circuit of the NH transistor output

5.4. Feedback power too high

Output BVW, terminal X10/9 - X10/10

Potential-free contact, maximum load DC 24V/1A

BVW contact

Operating no power to feedback power

status: the electronics too high acceptable

Output open open closed

The bleeder warning contact opens if feedback power is greater than 80% of

continuous bleeder power. If the bleeder load should continue to the rise to the

point of thermal overload, then the Bb1 contact will interrupt power flow. The

response of the drive system to this fault depends on the "NC" bridge (see

section 5.6).

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Bosch 4306 Service Manual Page 37