Block Diagram; Figure 3-1 Inverter Block Diagram - Siemens MICROMASTER 420 Operating Instructions Manual

Issue 04/02
3.1

Block diagram

Analogue Input Source
Input Voltage: 0 - 10V
(monitoring possible, P0756)
Input Current: 0 - 20 mA
(on 500 9 external resistor)
AIN +
AIN -
9
>5.0k
DIN1
DIN2
DIN3
+
24V
–
External Power
Opto -
Supply.
isolated
*1
Output Relay (RL1) Contacts RL1B
250V AC, 2A (inductive load)
RL1C
30V DC, 5A (resistive load)
Analogue Output.
AOUT + 12
0-20mA
AOUT -
P+
N-
The Analogue input circuit can be alternatively
configured to provide an additional digital input (DIN4) as shown.
Figure 3-1 Inverter block diagram
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
1
+10V
2
0V
3
4
A/D
5
6
7
8
+24V(100mA max)
9
0V(Isolated)
CPU
RL1
10
11
13 D/A
14
Serial
Link
15
(RS485)
DIN4
+
24V
–
1/3 AC 200V - 240V (RSD)
3 AC 380V - 480V
PE
Optional - Operator Panel
-1
Hz Min V A kWh
l Fn
O Jog P
2
0V
3
4
9
0V (Isolated)
3 Commissioning
FS1
PE
L, N (L1,L2)
or
L1, L2,L3
~
+ DC
Link
-
~
3
PE
M
33