7.4 Analogue Output and Serial Communications Cable
Make the appropriate connections, ensuring that the correct polarity and the
maximum load specification are strictly observed on connector 2.
7.5 Rear Connections:
Viewed from the rear and on the left is the AcuDew sensor input.
There are four banks of wiring connections points organized into groups named
here as C1, C2, C3 and C4.
Connector C1 – AcuDew interface
• Connect to mA and 24 V for AcuDew
Connector C2 - Analogue Output and Serial Communications
• Connect to + and – for 4-20 mA Analogue Output.
• Connect to A, B and COM for Serial Communication.
Connector C3 - Alarms
• Alarms: Two independent SPCO volt free contacts rated 10 A/240 V AC.
Connec
t
or
C2
AC
Po
wer
90
-
250V
50/60Hz
10
V
A
GND
N
L = Fused
1A
GND
-
+ = Fused
1A
Ferrite bead
Connec
t
or
C4
Connec
t
or
C3
Connec
t
or
C1
Alarm 1
Alarm 2
AC Wiring
DC Wiring
4-
20mA
Output
24VDC
Power
Supply
4VA
AcuDew Interface
Connect to mA and
24 V for AcuDew
Analogue Output and
Serial Communications
Connect to + and - for 4 -
20 mA analogue output
Connect to A, B and COM
for serial communication.
Alarms
Two independent
SPCO volt free
contacts rated
10A/240 V AC.
AC or DC Power
Universal 90 - 250 V AC 50/60 Hz
or 24 V DC version dependent on
factory set option.
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