Siemens SIMATIC HMI Betriebsanleitung Seite 27

UL approval
Note
After installation of the operator controls in the cover of the extension unit, the entire system
will have to get UL approval once again.
Underwriters Laboratories Inc., to
● UL 508 (Industrial Control Equipment)
● CSA C22.2 No. 142 (Process Control Equipment)
or
Underwriters Laboratories Inc. complying with
● UL 508 (Industrial Control Equipment)
● CSA C22.2 No. 142 (Process Control Equipment)
● UL 1604 (Hazardous Location)
● CSA-213 (Hazardous Location)
Approved for use in
● Class I, Division 2, Group A, B, C, D or
● Class I, Zone 2, Group IIC or
● non-hazardous locations
Extension Units
Operating Instructions (Compact), 02/2009, A5E02296499-01
Standards, certificates and approvals
27