Siemens SIMATIC ET 200AL - Overview; Wiring Loads;Actuators

Analog value processing
Function Manual, 06/2014, A5E03461439-AC
103
Wiring loads/actuators
6
6.1
Overview
Introduction
This chapter describes the basic procedure for wiring loads/actuators to analog outputs.
Information on specific wiring options is available in the manual of each module.
For detailed information on cable routing and shielding, potential equalization, etc. please
refer to the function manual Configuring interference-free controllers
(http://support.automation.siemens.com/WW/view/en/59193566).
Abbreviations used in the figures
Key to the abbreviations in the figures below:
AQ
Analog output module
M
Ground connection
L+
Supply voltage connection
S
n
+/S
n
-
Sense line channel n
QV
n
+/QV
n
-
Voltage output channel n
QI
n
+/QI
n
-
Current output channel n
M
ANA
Reference point of the analog ground
U
ISO
Insulation voltage
Lines for analog signals
Always use shielded twisted-pair cables to wire the analog signals. This improves immunity.