Dynamic periodic monitoring of dual body valves on an XPSPVK eccentric press
Presses used for cold working of metals must be systematically and regularly checked.
This check also affects the safety function provided by the XPSVK Preventa module: faults must to be simulated in order to test this function.
Method used to check the dynamic monitoring of the dual body valve when this is performed by an XPSPVK module Caution: These tests must be carried out by suitably trained personnel. Since the Preventa module only monitors the closing of the 2 disks of the dual body valve, the XPSPVK product cannot be tested by disconnecting only one of the valve's two coils then resetting.
Tests to be performed during periodic checks
1/ Equipment required for these tests:
Flat blade screwdriver
Piece of insulated electrical cable, min. length 6 cm (internal voltage 24 VDC)
2/ Simulation of a detector connection fault
OR stop at the upper threshold in single stroke mode
Result: the stroke does not start if the command is activated (open output 21-22).