Pilz PSS SB NOT, Basic license - Manual (Page 26)

4-4
Intended Use
Modular Block System: Emergency Stop Circuits
• With or without automatic reset when E-STOP is released
• With or without prompt for function test after a synchronisation error
when the E-STOP is released
INFORMATION
Input circuitry:
• Use E-STOP button with test pulses
• When using SB063 for category 4 applications:
- use dual-channel elements
• When using SB063 for category 2 applications:
- use single-channel elements
SB065: Feedback loop monitoring
SB065 is a standard function block for the direct control and monitoring of 1
or 2 contactors up to category 4, in accordance with EN 954-1, 03/97.
INFORMATION
On SB065, the SSNR may lie in the range of 1 to 600.
Features and application areas:
• Feedback loop is monitored during the change in the switch signal and
while the contactors are in a static condition.
• Feedback loop can be monitored on two separate feedback loops of
contactors connected in series
• Feedback loop can be monitored on two separate feedback loops of
contactors connected in parallel
• Feedback loop can be monitored on group contactors
• Selectable time for feedback loop monitoring
• Parameter to suppress error messages when an I/O-Group stops
(SafetyBUS p)
INFORMATION
Input circuitry:
• To achieve category 4, two independent shutdown routes must be
provided within the current path of the potentially dangerous drive