Phoenix Contact PSR-CT Series, Operating Instructions Manual, Page: 33 / 69

Electrical connection
108366_en_01 PHOENIX CONTACT
33 / 69
4.1.1 Notes on using Y distributors and dummy plugs
Observe the following notes when connecting with Y distributors and the corresponding
dummy plugs:
– Do not stick Y distributors directly on the connection of the safety switch.
– Use suitable connecting cables to connect the Y distributor and the safety switch.
– In order to prevent manipulation, install the Y distributors or cables out of reach of peo-
ple.
4.1.2 UL notes
Adhere to the following conditions for use according to cULus requirements
1
:
– Use of a power supply with “for use in class 2 circuits” feature
– Alternatively: electrically isolated power supply unit with a maximum off-load voltage of
30 V DC and a maximum limited current of 8 A
– Use of a connecting cable that is listed under UL category code CYJV2 or CYJV
1
The devices have been checked according to the requirements of UL508 and CSA/ C22.2 no. 14 (protec-
tion against electric shock and fire). Only for use according to NFPA 79 (Industrial Machinery).