60
APPENDIX A
REPLACING A 7320 TRANSMITTER WITH AN AV400
L
N
E
CA
4
Relay 1
N
C
A
5
NO
A6
CA
7
Relay 2
N
C
A
8
NO
A9
C
A10
Relay 3
N
C
A11
NO
A12
Analog Output 1
+
A13
—
A14
Analog Output 2
+
A15
—
A16
B16
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
Terminal Block C
C1
Not Used
C2
C3
+12V
C4
T
rigger
Sensor A Cleaner
C5
Acknowledge
C6
0V
C7
Out of Sample
Sensor A
C8
Common
Out-of Sample
C9
+12V
C10
T
rigger
Sensor B Cleaner
C11
Acknowledge
C12
0V
C13
Out of Sample
Sensor B
C14
Common
Out-of-Sample
C15
TX+
C16
TX—
Digital Communications
C17
RX+
C18
RX–
C19
Common
C20
Not Used
L
N
E
L
Line
N
Neutral
E
Connect supply earth to stud on case
85 to
265 V AC
Receiver
Emitter
Cleaner
7320 100 Sensor
Factory-fitted Links.
DO NOT REMOVE
+ve
–ve
24 V DC
Terminal Block B
Terminal Block B
Flowcell Connections
Sensor
B
Sensor
A
B1
B9
Emitter 0V
B2
B10
Red (Cable 2)
B3
B11
Green (Cable 1)
B4
B12
Yellow (Cable 1)
B5
B13
Red
B6
B14
Blue
B7
B15
Green
B8
B16
Yellow
Cable
Colors
Blue (Cable 2)
E24V
Emitter Trigger –ve
Emitter Tve
Re12V
Receiver 0V
Receiver Reference Signal
Receiver UV Signal
Terminal Block C
Flowcell Connections
Sensor
B
Sensor
A
Cable
Colors
C9
C3
C12V
C10
C4
Green
C12
C6
Blue
Red
Cleaner Trigger
Cleaner 0V
C11
C5
Acknowledge
N/A
Terminal Block A
Cable 1
(2 Wire)
Cable 2
(3 Wire) –
see note 5
Before making
any electrical
connections,
refer to the
Warnings on
page 37
Earth (Ground)
Stud on Case
(see Fig. 6.10)
Notes.
1) The screens of the sensor's emitter, receiver and cleaner cables must be enclosed in yellow/green sleeving and
connected to the earth (groud) stud fitted to the transmitter case closest to the cable's entry point – see Fig A.1.
2) Dual input versions – connect each sensor to the correct input terminals (A or B) as indicated on the sensor's
cables.
3) Use the three-hole cable gland provided with the sensor for the sensor cables.
4) Fit a link between C3 and C5. This stops a false Cleaner Fail messages occuring, as the 7320 system cleaner
module does not generate the Cleaner Acknowledge signal used in the AV400 for the Cleaner Fail Diagnostic.
5) Remove the existing tag from the green wire and fit an eyelet tag. Connect the green wire (Cable 2) to the AV400
Transmitter earth (ground) stud.