Wieland SNH Serie Mode D'emploi page 20

2 Proper use
The units must only be used as components of safety devices on machines intended to pro-
tect persons, material and machines.
Only use the unit in accordance with its intended purpose. Also, pay particular attention
to the information in Chapter 7.3 "Disposal" on page 23.
In particular, the respective requirements for the installation and operation of emergency
stop buttons must be complied with to ensure use as prescribed:
• EN 60204-1
• EN 13849-1
• EN ISO 13850
Contactors are suitable for applications up to PL e according to EN ISO 13849-1 and up to
SIL CL 3 according to EN IEC 62061.
3 Installation and connection
• During installation, the EMERGENCY OFF button must be in a position that is easy to
reach. This is especially the case for EMERGENCY OFF buttons with a high protective col-
lar!
• When using illuminated operating elements, maximum 230 V AC is permitted to be con-
nected to the switching elements.
• Note the dimensions, see Chap. 11 "Dimensions", p. 32.
Panel mount version
Drill mounting holes in the mounting plate (see illustration SNH 00xx + SNH 1102 M12,
Chapter 11 "Dimensions", p. 32.).
Insert the operating element through the mounting hole and fasten it with the lock nut
(see Section 8.1 "Tightening torques for the fixing nuts" on page 23).
Attach the switching element and turn this clockwise by one eighth of a turn. The swit-
ching element engages.
Check that the actuator unit and the switch unit are correctly engaged with each other.
Check whether the contacts of the failure switch-off are closed when the switching ele-
ment is engaged and the operating element is not actuated.
Connect the connecting wires to the terminal blocks. In doing so, note the permitted
electrical and mechanical values (see Chapter 7.3 "Disposal" on page 23).
Sufficient strain relief must be provided for an emergency stop with an integrally ex-
truded M12 connector. The device connector may not be loaded.
Ensure that the bending radius of the cable is sufficient, so that the cable connection on
the emergency stop is not loaded.
Doc. # BA000612 – 05/2023 (Rev. E)
NOTE
SNH EN 20 / 99