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• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1: 2008
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL 3) to IEC/EN 61508
- Category 4 to EN 954-1
• Functions selectable via rotational switches to connect max.:
- 8 E-stop circuits, single channel or
- 4 E-stop circuits, 2-channel or
- 4 light curtains or
- 2 light curtains and 1 E-stop circuit or
- 4 safety gates or
- 2 safety gates and 1 E-stop circuit or
- 4 pairs of 2-hand-buttons or Typ III A according to DIN EN 547 or
- 2 pairs of 2-hand-buttons Typ III C according to DIN EN 547
and 1 E-stop circuit
• In addition selectable:
- auto or manual reset (simulation input for gate monitor)
- continuously monitored feedback circuit to monitor external
contactors
• Cross fault detection
• Short circuit and broken wire detection
• Outputs:
- 3 NO or 2 NO and 1 NC contacts
- 2 semiconductor outputs short circuit proof and overload
protected
• Under- and overvoltage detection and signalling
• LED indication for operation (RUN), channel 1/2
• 45 mm width

• Usable for safety application by using a correctly installed and
connected, security module (e. g. BG 5925/920 or LG 5925/920)
• According to IEC/EN 60 204-1
• Standard switching distance: San ≤ 7 mm
Sab ≥ 18 mm
• Max. number of switches in series:
- 6 NE 5021 on control unit BG 5925/920 or LG 5925/920
- 10 NE 5021 on multifunctional safety timer UG 6960 and UG 6961
- 10 NE 5021 on multifunctional safety module UG 6980
- 20 NE 5021 on multifunctional safety module UG 6970
- 20 NE 5021 on multifunction module BH 5910
• 2 NO contacts or 2 NO contacts / 1 NC contact
• Contacts protected against welding
• Very long service life
• Easy to mount and service
• Manipulation is difficult due to coded sensor
• Protection class IP 67