ABB MagMaster - Frequency Outputs; Alarm Outputs; PLC Interface

13
ALARM1
ALARM2
PLS0V
Alarms
MagMaster Transmitter
ALARM1
ALARM2
PLS0V
MagMaster Transmitter
and/or
Alarm 2
+
Alarm 1
DC.
supply
Relay
Timer
Switch
R
Relays and Timers
Forward Flow
DC
supply
Reverse Flow
Counter/Totalizers
Electromechanical
Connections
Telemetry, Electronic
Counters etc.
and/or
and/or
Counter/Totalizers
Forward Flow
Reverse Flow
F OUT A
F OUT B
PLS0V
F OUT A
F OUT B
PLS0V
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
MagMaster Transmitter
F OUT A
F OUT B
PLS0V
Typically 1k
1W
PLC — Common —ve
PLC — Common +ve
F OUT A
F OUT B
PLS0V
+
—
Rev +
PLC
Fwd +
+
—
Rev –
PLC
Fwd –
DC
supply
DC common
DC
supply
3 ELECTRICAL INSTALLATION…
Fig. 3.16 Frequency Output Connections
Fig. 3.18 PLC Interface
Fig. 3.17 Alarm Output Connections
Information. Relay and Timer Switch
shown for example only. Connect as
required.
3.4.1 Frequency Outputs – Fig. 3.16 3.4.3 PLC Interface – Fig. 3.18
3.4.2 Alarm Outputs – Fig. 3.17
Information.
• Inductive loads may be suppressed by diodes (D) – 1N4004 or similar.
• Inrush currents are limited to 1 Amp by resistor R – e.g. 27 1W for 24V systems.
• Operation of outputs is programmable – see Configuration Manual for details.
• Frequency and Alarm outputs share a common return with contact input.
• External isolators not normally required, as the pulse, alarm and contact circuits are
electrically separated from all other Magmaster connections.