Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4“ - 10”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email
www.vatvalve.com
271149EA
2007-06-12
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2.6.8 Valve cluster connection
The valve cluster uses a two wire bus for the inter communication between the Master and the Slave valves. The valves
are connected in a daisy chain and the bus must be terminated on both sides by a 120
Ω
resistor that can be set in the
link adapter of the valve (refer to chapter «2.6.8.1 Link adapter»).
120
Ω
terminator
category 5 link cable
120
Ω
terminator
valve cluster daisy chain