Operating Modes; Mechanical Mounting; Electrical Commissioning; Prerequisites - ASO Safety Solutions SK 41 Manuel D'utilisation

SK 41 Safety Relay Safety Relay Relay

5.4 Operating modes

Separate or serial output of the control circuits (redundant routing of the switching contacts)
Automatic reset (factory setting, S11 S12 unbridged)
After actuation / failure of the sensor or after a power failure, the switching unit automatically re-enables
the control circuits.
Manual reset (bridge S11 S12)
After actuation / failure of the sensor or after a power failure, the switching unit does not re-enable
the control circuits until the reset push-button has been actuated (terminals Z1 Z2).
Constant actuation or bypassing of the reset push-button is not possible.

6. Mechanical mounting

The switching unit must be professionally mounted:
- Installation in a Pollution Degree 2 environment.
- In a dust- and moisture-protected switching cabinet or housing.
- With a protection class of at least IP54.
- On a 35 mm DIN mounting rail acc. to EN 50 022.
- For reasons related to thermal convection, when installing two or more switching
units, maintain a minimum distance of one housing thickness (approx. 3 cm)
between the units or to other installations in order to prevent mutual heating.
Do not install the switching unit in the immediate vicinity of strong sources of heat.
The switching unit may be mounted in any orientation

7. Electrical commissioning

Connecting to the wrong terminals can destroy the switching unit.

7.1 Prerequisites

• The switching unit enables operation at 230 V (115 V) or at 24 V.
• When supplying with 24 V AC/DC, the voltage must comply with the requirements for Safety Low Voltage
(SELV)
• The auxiliary terminal 31 32 serves only as an auxiliary terminal (signalling, display, etc.) and must not be
integrated in the sa�et�� circuit.
• Cables installed outdoors or outside of the switching cabinet must be protected appropriately.
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