Pilz PSS SB HYD, Basic license - Manual (Page 190)

6-128 Modular Block System: Hydraulic Presses
Standard Function Blocks
SB087: Driving/monitoring the position of a single hydraulic valve
(poppet and directional control valve)
Block header
Input parameters
• SSNR: Safety subroutine number
Permitted value range: 1 ... 200
Format: Byte constants KB001 ... KB200
(see sections in Chapter 5 entitled “Administration data blocks
DB015, DB016 and DB017” and “Input parameter SSNR”).
Value of DW (
SSNR) = 0: No error found
• ON: Start signal for “Operate valve”
ON = 0:
Valve switched off
ON = 0/1 pulse edge: Switch valve on
ON = 1:
Valve switched on
ON = 1/0 pulse edge: Switch valve off
The valve cannot be switched on if the block has detected a
fault (reset lock).
The valve can only be switched on if it is in its start (off)
position (see input parameter
S).
• S: Acknowledgement of valve position
S = 1:
Valve in its start position (valve de-energised,
acknowledgement from valve is present)
INFORMATION
If the valve is acknowledged via a switch, the supply to this switch must
be from test pulses.
SB087
H_VALV_S
B - SSNR
X - ON
X - S
W - TOn
W - TOff
X - VTyp
X - RSET ENBL - X
Y
- X
ERR - X
SB087