Application Information And Noise Immunity - Siemens SIMATIC FM 458-1 DP User Manual

Mounting
3.3

Application information and noise immunity

CAUTION
!
NOTE
3-8
Fig. 3-7 Inserting the FM 458-1 DP module (schematic diagram)
4. Screw the module at the top and bottom, tightening the screws
to 0.8 ... 1.1 Nm.
5. Re-insert the line connector at the power supply module.
The following is valid for the FM 458-1 DP application module and for
the EXM 438-1 and EXM 448/EXM 448-2 expansion modules:
 Noise-immune operation is only possible if the modules are tightly
screwed into the subrack.
 It is not permissible to insert or withdraw modules undervoltage.
Additional information on EMC and ambient conditions, refer to
Chapter 5 "Assembly Guidelines", or the appropriate SIMATIC S7
documentation!
Application Module FM 458-1 DP - User Manual
A5E01078222-02 Edition 03.2009