Pilz PSS SB HYD, Basic license - Manual (Page 198)

6-136 Modular Block System: Hydraulic Presses
Standard Function Blocks
SB088: Driving/monitoring the position of a dual 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 “drive valves” (Y1 and Y2)
ON = 0:
Valves switched off
ON = 0/1 pulse edge: Switch valves on
ON = 1:
Valves switched on
ON = 1/0 pulse edge: Switch valves off
The valves cannot be switched on if the block has detected a
fault (reset lock).
The valves can only be switched on if they are in their start
(off) position (see input parameters
S1 and S2).
• S1: Acknowledgement of valve position (valve 1)
S1 = 1:
Valve in its start position (valve de-energised,
acknowledgement from valve is present)
• S2: Acknowledgement of valve position (valve 2)
S2 = 1:
Valve in its start position (valve de-energised,
acknowledgement from valve is present)
SB088
H_VALV_D
B - SSNR
X - ON
X - S1
X - S2
W - TOn
W - TOff
X - Y1On
X - Y2On
X - VTyp
X - RSET ENBL - X
Y1
- X
Y2 - X
ERR - X
SB088