
12
Electromagnetic Flowmeter Converter
Terminal Designations 1/10” to 40” [DN 3 to DN 1000]
1) Supply power, see Instrument Tag.
2) Magnet coil supply from line.
3) External zero return, passive, over contact with internal
voltage supply terminals U2 (+24 V DC) and 22. Switch S902 closed.
External totalizer reset, passive over contact with internal voltage supply
terminals U2 (+24 V DC) and 31. Switch S902 closed.
4) External totalizer reset with external voltage supply (forgalv. isolation) terminals G2 (–)
and 31 (+24 V DC). Switch S902 on the Connection Board must be opened.
External zero return with external voltage supply (for galv. isolation) terminals G2 (–)
and 22 (+24 V DC). Switch S902 on the Connection Board must be opened.
Dynamic zero compensation with external voltage supply (for galv.isolation) terminals G2 (–)
and A1 (+24 V DC). Switch S902 opened. The fluid must be at absolute zero flowrate
the metering tube must be completely filled, see 3.3.
5) * Scaled pulse output, 24 V DC active, load ≥150 , fmax 10 kHz
terminals V1, V2; Function 9,11 forward
terminals V3, V4; Function 9,11R reverse
6) * Scaled pulse output, passive, relay contact, ≤28 V DC, ≤250 mA, ≤3 W, fmax 20 Hz
terminals V1, V2; Function 55, 56 forward
terminals V3, V4; Function 57, 58 reverse
7) Option, data link RS 485. terminals V1, V2, V3, V4; Function T-, T+, R-, R+.
8) Option,data link Profibus DP, terminals V1, V2, V4, G2, Function RxD/TxD-P(B),
RxD/TxD-N(A), +5V (VP), DGND(G2) terminals V4, G2 use only for bus terminations.
9) Alarm max., relay contact ≤28 V DC, ≤250 mA, ≤3 W,
passive or optocoupler UCE ≤25 F, ICE ≤7.5 mA. terminals P1, P2; Function E7, C7.
10) Alarm min., relay contact ≤28 V DC, ≤250 mA, ≤3 W,
passive or optocoupler UCE ≤25 F, ICE ≤7.5 mA. terminals P3, P4; Function E8, C8.
11) Forward/reverse direction signal, relay contact ≤28 V DC, ≤250 mA, ≤3 W. terminals 44, 45, 46 44, 45, 46.
12) Current output, RL≤550 0/4–20 mA, 0–10–20 mA, 4–12–20 mA, RL≤1000 0/2–10 mA,
RL≤2000 0–5 mA. terminals –, +.
13) a) Alarm output, relay contact opens at alarm,≤28 V DC, ≤250 mA, ≤3 W, terminals V5, V6; Function 39, 40 or
b) Alarm output, optocoupler, UCE ≤25 F, ICE ≤7.5 mA. terminals V5, V6; Function E9, C9.
If a passive scaled pulse output is required in addition to the data link, then the alarmoutput is not available.
c) Scaled pulse output, optocoupler, UCE ≤25 F, ICE ≤7.5 mA
terminals V5, V6; Function 55, 56 forward.
14) Shielded signal cable, already installed. If a new signal cable is required ,
see Interconnection Diagram 20” to 40” [DN 500 to DN 1000].
15) Reference voltage cable, already installed.
*) Scaled pulse output, active or passive, pulse width can be set from 0.032 to 2000 ms.
Ω
ΩΩ
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