Siemens M7-400 Benutzerhandbuch

13-42

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

The abbreviations used in Figures 13-20 to 13-21 have the following meanings:

QI:

Analog output current

QV:

Analog output voltage

S:

Reference potential of the analog circuit

R

L

:

Load resistance

Figures 13-20 and 13-21 show you how you must connect loads/actuators to the
current or voltage outputs of the analog output module.

The following figure shows wiring on one channel as an example.

+24 V

R

L

L

+

QI

Ground bus

V

CM

M

0  V

Figure 13-20 Connecting Loads/Actuators via a Two-Wire Connection to a Current Output