30
AQUA M A STE R4
| EL EC T R O M AG N E T I C FLO W M E T ER T R A N SM I T T ER | O I/FE T4 0 0 - EN R E V. D
…5 Installation
Integral sensor connections
Pre-wired sensor connections to the connector plug are shown
in Figure 46.
Figure 46 Integral sensor connections (pre-wired)
Input/Output connections
CAUTION – DAMAGE TO EQUIPMENT
• Refer to the Specification,
63 for input/output ratings.
• Inductive loads must be suppressed or clamped to
limit voltage swings.
• Operation of outputs is programmable.
• External isolators are not normally required as the
pulse and alarm circuit is electrically-separated
from all other AquaMaster4 connections.
• Capacitive loads must be inrush current limited.
• Fully-floating pulse outputs may be subject to
static damage, for example connecting to a floating
datalogger, unless ‘COM’ is operated within its
galvanic isolation range (±35 V) from earth.
Input/Output connection socket
Figure 47 Input/Output connection socket (rear view)
Table 2 Connector input/output connections
( pulse/pulse*)
Pin
Signal
Function
Color (output cable)
A
DATA
Sensus Encoder
Violet
B
DATA CLOCK
Sensus Encoder
Blue
C
O/P COM
Output common
Yellow
D
O/P2
Reverse pulses
Red
E
O/P3
Alarm output
Brown
F
O/P1
Forward pulses
Orange
G
0V
Sensus Encoder
Screen
*For pulse only connection, use pins C, D and F.
A
B
C
D
E
F
G
3KXF221400L0XXX /
3KXF208400L0600
3KXF221400L0XXX /
3KXF208400L0600
I/O
Pin view – I/O or
Modbus socket only
I/O
