Pilz PSS SB HYD, Basic license - Manual (Page 172)

6-110 Modular Block System: Hydraulic Presses
Standard Function Blocks
Input circuitry
Connect the input parameters S1, S2 and LCKD as follows:
If you are using 2 gate switches and a guard locking monitoring circuit:
• Assign the relevant input parameters as specified in the section entitled
“Input parameters”.
If you are using one gate switch and one combined gate switch/guard
locking monitoring circuit:
• Assign the input parameters S1 and S2 to the signal from the gate switch
(both input parameters to the same signal).
• Assign the input parameter LCKD to the signal from the combined gate
switch/guard locking monitoring circuit:
Input parameter S1 : Gate switch
Input parameter S2 : Gate switch
Input parameter LCKD : Gate switch/guard locking monitoring circuit
WARNING!
The gate switch signal and the signal from the combined gate switch/guard
locking monitoring circuit must not be connected in series.
Output parameters
• ENBL: Enable flag bit
ENBL = 0 : Error detected (e.g. gate opened)
ENBL = 1 : The enable is given if the gate is closed and
locked and no error has been detected
• UNLK: Controlling the guard locking (electromagnet)
UNLK = 0 : Lock gate
UNLK = 1 : Unlock gate
WARNING!
The guard locking device must operate to normally energised
mode, i.e. the gate must be unlocked when operating voltage
is applied (
UNLK = 1)!
Use of a guard locking device that operates to normally de-
SB075