The buttons in the two-hand circuit must be arranged and be such that accidental operation is prevented and the protective action cannot be easily bypassed.
Here the regulations in the applicable standards, in particular EN ISO 13851 and DIN EN ISO 13855, are to be observed.
The ESM-2H2.. is intended for the connection of two-hand buttons each with one NC contact and one NO contact.
Fig. 5: Wiring for the ESM-2H2.. with two-hand buttons (NC/NO contact)
Feedback loop
Fig. 6: If an external contactor or expansion module (e. g. ESM-ES3..) is to be
connected to ESM-2H2.. to increase the rating of the contacts or the
number of contacts, its positively driven monitoring contacts (NC con-
tacts) are to be connected in series and connected to the connections
for the feedback loop X1 and X2.
Jumper X1-X2:
see description
Plug-in terminals
Power supply
Fig. 7: Connection of the power supply to terminals A1 and A2 (power supply