Siemens M7-400 ユーザーズマニュアル

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S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

Potential differences must not arise between non-isolated measured value sensors.
If necessary, you must take additional installation measures (equipotential bonding
conductor) to ensure this.

Figure 13-14 shows the connection of non-isolated measured value sensors.

+

-

V

E0

Non-isolated
measured value
sensors

Ground bus

+

-

V

E1

M

SENSOR

MV

0+

M

0-

MV

1+

M

1-

Figure 13-14 Connection of Non-Isolated Measured Value Sensors

Figure 13-15  shows the connection of voltage sensors to the analog input module.

+

-

U

+

-

U

+24 V

MV

0+

M

0-

MV

1+

M

1-

M

L+

V

CM1

V

CM0

0 V

Figure 13-15 Connection of Voltage Sensors