General Description - Burkert 8642 Instructions De Service

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GENERAL DESCRIPTION

I/O Box for driving process valves with 6520 NAMUR type valves:
• Driving of four Type 6520 valves (PTB No. Ex-97.D.2089x):xx
• Connection of two sensors per valve
NOTE
Fig. 1: Circuit diagram with NAMUR sensor and protective resistance
54
Max. line resistance to the sensors and valves: 20 Ω
The values of the capacity and inductance are specified in the
conformity certificate.
N
series resistor
I/O-Box Type 8642 Id. Nr. 142 791