For a safe series connection the use of the normally open contacts at the termination points 2.5 and 2.6, as well as 3.5 and 3.6 is necessary
For a safe parallel connection the use of the normally closed contacts of both relays at the termination points 2.4 and 2.5 respectively 3.4 and 3.5 ismAndatory
MACX MCR-EX-T Series Signal Conditioners
Programmable Ex-i temperature transducer with analog output and 1 limit value relay Standard configuration Resistance thermometer in two, three, or four wire technology Galvanic isolation Wide range power supply Spring cage connection
