15
WATERMASTER
ELECTROMAGNETIC FLOWMETER | DS/ WM-EN REV. Y
—
Output connections
Frequency outputs
XX XX XX XX 42 41 51 61
52
62
Terminal connection IDs
are HART- / PROFIBUS-
variant dependent
COM DO1 DO2
PLC or Datalogger
PLC / Datalogger connections
Note
. Digital outputs DO1 and DO2 are polarity sensitive. The
common (negative) connection for these outputs is
designated 'COM'.
+
–
1 2 3 4 5 6
1 2 3 4 5 6
XX XX XX XX 42 41 51 61
52
62
COM DO1 DO2
Forward flow output (DO1)
Counter / Totalizer
Reverse flow
output (DO2)
Counter / Totalizer
DC Supply
and/or
Electromechanical connections
1 2 3 4 5 6
1 2 3 4 5 6
XX XX XX XX 42 41 51 61
52
62
+
–
+
–
COM DO1 DO2
Forward flow output (DO1)
Counter / Totalizer
and/or
Reverse flow
output (DO2)
Counter / Totalizer
Telemetry / Electronic counters connections
Alarm outputs
Terminal connection IDs
are HART- / PROFIBUS- /
MODBUS- variant dependent
COM DO3
XX XX XX XX 42 41 51 61
52
62
+
–
COM DO1 DO2 DO3
DC supply
Horn
Alarm 1
Alarm 2
Bell
and/ or
Note
.
• Normal alarm / logic output is from DO3 (terminal 61). DO1
(41) and DO2 (51) can also be configured as alarms if
required but are then NOT available as frequency / pulse
outputs as shown in
Electromechanical connections
and
Telemetry / Electronic counters connections
, opposite.
• Bell and horn shown for example only. Any suitable alarm
device may be used (for example, lamp, siren, buzzer etc.).
XX XX XX XX 42 41 51 61
52
62
+
–
COM DO1 DO2
DC supply
Timer switch
Alarm 1
Alarm 2
Relay
and/ or
Note
. Relay and timer switch shown for example only.