Multi-Drop Connection (2-Wire Connection) - Honeywell VERSAFLOW SONIC 1000/TWS 9000 Handbook

DESCRIPTION OF HART INTERFACE
9

9.3.2 Multi-drop connection (2-wire connection)

In the case of a multi-drop connection, up to 15 devices may be installed in parallel (this signal
converter and other HART
The current outputs of the devices must be passive!
Figure 9-2: Multi-Drop connection (2-wire connection)
1 Primary Master
®
2 HART modem
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3 HART signal
4 Other HART
5 Signal converter terminals A (C)
6 Signal converter terminals A- (C-)
7 Signal converter with address ≥ 0 and passive current output, connection of max. 15 devices (slaves) with 4...20 mA
8 Secondary Master
9 Power supply
10 Load ≥ 230 Ω
190
®
devices).
®
devices or this signal converter (refer also to 7)
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VERSAFLOW SONIC 1000/TWS 9000
34-VF-25-07 iss.2 GLO Nov 11 US