ABB MAG-SM Instruction Bulletin page 18

Electromagnetic Flowmeter Converter
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 (for galv. 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.
Scaled pulse output, 24 V DC active, load ≥150
5) *
terminals V1, V2; Function 9, 11 forward
terminals V3, V4; Function 9, 11R reverse
Scaled pulse output, passive, relay contact, ≤28 V DC, ≤250 mA, ≤3 W, fmax 20 Hz
6) *
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.
Alarm max., relay contact ≤28 V DC, ≤250 mA, ≤3 W,
9)
passive or optocoupler U
Alarm min., relay contact ≤28 V DC, ≤250 mA, ≤3 W,
10)
passive or optocoupler U
Forward/reverse direction signal, relay contact ≤28 V DC, ≤250 mA, ≤3 W. terminals 44, 45, 46 44, 45, 46.
11)
12) Current output, R
Ω
≤2000
R
L
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, U
If a passive scaled pulse output is required in addition to the data link, then the alarm output is not available.
c) Scaled pulse output, optocoupler, U
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.
Terminal Designations 1/10" to 40" [DN 3 to DN 1000]
12
≤25 F, I ≤7.5 mA. terminals P1, P2; Function E7, C7.
CE CE
≤25 F, I ≤7.5 mA. terminals P3, P4; Function E8, C8.
CE CE
Ω
≤550
0/4–20 mA, 0–10–20 mA, 4–12–20 mA, R
L
0–5 mA. terminals –, +.
≤25 F, I ≤7.5 mA. terminals V5, V6; Function E9, C9.
CE CE
≤25 F, I
CE
Ω
, fmax 10 kHz
≤1000
L
≤7.5 mA
CE
Ω
0/2–10 mA,