Connecting The Analog Outputs - Siemens SIMATIC SM 335 Manual

2.3

Connecting the analog outputs

Connecting the analog outputs
The analog outputs must be connected as voltage outputs. Detailed informa-
tion can be found in the SIMATIC Programmable Logic Controller, S7-300 Module
Data Reference Manual.
Recommendation
If possible, the SM 335's analog outputs, with the associated zero potential, should
be connected to a terminal block from where you can tap the zero potential for the
analog outputs.
Configuration
The result is the following basic configuration:
SM 335
CH0 2
CH1 3
CH2 4
CH3 5
M
ANA
Fig. 2-2
Non-Isolated
Actuators, which are shielded and whose shields are grounded and connected to
the actuator's zero potential conductor, form a ground loop. You must therefore
break the connection between shield and zero potential conductor on the actuator
or use an actuator whose zero potential conductor is not connected to ground.
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
Connecting the Inputs and Outputs of the SM 335
6
Connecting Actuators to the SM 335
Actuator 0
Actuator 1
Actuator 2
Actuator 3
Twisted-pair,
shielded
2-5