Pilz PSS SB HYD, Basic license - Manual (Page 136)

6-74 Modular Block System: Hydraulic Presses
Standard Function Blocks SB069
Wiring the input parameters
Wiring for category 2 (ESPE/AOPD Type 2)
It is sufficient to use one output signal from the ESPE/AOPD. In this case,
parameters for input parameters
NO_1 and NO_2 should be set for the
same input.
WARNING!
If only one signal is used, certain faults will not be detected. For this
reason you should carry out a function test of the ESPE/AOPD at regular
intervals. This requirement can be met by requesting an automatic
function test at appropriate intervals via the input parameter
Test.
Wiring for category 4 (ESPE/AOPD type 4)
To achieve category 4 you will need to use two output signals from the
ESPE/AOPD. Type 4 ESPE/AOPD devices with semiconductor outputs
can be connected to DI 2 inputs (e.g. input module PSS(1) DI 2) in order to
meet the requirements of category 4.
Test pulses
If the relay outputs of the ESPE/AOPD do not have their own test pulse
signals, these will need to be set via the PSS.
Output parameters
• ENBL : Enable bit
ENBL = 0: Protected field broken
ENBL = 1: Protected field clear
The enable is issued if the protected field is clear
(
NO_1 = 1, NO_2 = 1) and no faults are present.
• TEST: Test output
TEST = 0: Simulated break in protected field
Function test of ESPE/AOPD by switching off the
ESPE/AOPD emitter
TEST = 1: ESPE/AOPD emitter in operation
• PWR: Output for switching the operating voltage to the ESPE/AOPD
(POWER)
PWR = 0:
ESPE/AOPD switched off
PWR = 1: ESPE/AOPD switched on