Pilz PSS SB HYD, Basic license - Manual (Page 34)

4-4
Intended Use
Modular Block System: Hydraulic Presses
SB059: Two-hand monitoring
The function of standard function block SB059 is determined in
accordance with EN 574, 02/97. It fulfils all the requirements of category 4,
in accordance with EN 954-1, 03/97.
Operating modes:
• Monitoring two buttons (N/C and N/O) in accordance with
EN 954-1, 03/97
• Monitoring the synchronisation time of two buttons (<0.5 s)
• Can also be used to monitor foot switches
INFORMATION
Input circuitry:
• Two-hand buttons must use test pulses.
SB061: Emergency stop monitoring
SB061 is a standard function block for monitoring E-STOP buttons up to
category 4, in accordance with EN 954-1, 03/97 and AK 6, in accordance
with DIN V 19 250, 05/94. It is also possible to use SB061 to monitor
safety gates up to category 4, in accordance with EN 954-1, 03/97.
Operating modes:
• With or without start-up reset on cold-start
• With or without automatic reset when E-STOP is released
INFORMATION
Input circuitry:
• Use E-STOP button with test pulses
• When using SB061 for category 4 applications:
- use dual-channel elements
• When using SB061 for category 2 applications:
- use single-channel elements