Turbidity Unit Connection Box; Connections For 7997 450 Series - ABB 4670 Series User Manual

3.6 Turbidity Unit Connection Box – Fig. 3.8
Optical
Emitter
Blue
Screen
Braid
Red
Blue
Green
Yellow
Blue
Series Unit
Models 7997 200 Series and 7997 300

3.7 Connections for 7997 450 Series

The 405 sensor comes with a 2m cable which connects in
accordance with Fig 3.8, except that there is no Black wire.
To Turbidity Unit
Optical Receiver
Green Red
To 4600
Fig. 3.8 Turbidity Unit Connection Box
Fig. 3.9 Model 7997 400 Series Extension Cable Connection Box
Wiper
Unit
Screen
Braid
Blue
Yellow
Screen
Braid
Red
Green
Red
Screen link
Black
White
Screen
Braid
Information. If a longer cable to the 4600 Series unit
is to be fitted, remove the existing cable and replace it
making the appropriate connections shown here and
in Fig. 3.4 or 3.5. For model 7997 300, first remove
the receiver cap, to allow better access to the junction
box.
B
G
R
Y
W
Scrn.
3 ELECTRICAL CONNECTIONS
Model 7997 400 Series
Note. On 7997 400 Series Models only,
the sensor is wired directly into the
transmitter.
Information. For applications where the
transmitter is sited more than five meters
from the dip system, an extension cable
is required – see Section 9.4 for the part
number of the cable. The maximum
length of cable is 100 meters. An IP65
rated, good quality junction box is also
required to make the connection.
The wire colors in the extension cable are
the same as those in the standard cable.
Make connections like to like, i.e. red to
red, etc. – see Fig. 3.9.
4675
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