ABB 4670 Series, Руководство пользователя

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17
B
G
R
Y
W
Scrn.
4675
Models 7997 200 Series and 7997 300
Yellow
Optical
Emitter
Screen
Braid
Yellow
Blue Green
Screen
Braid
Blue
Green
Blue
Red
Red
Screen link
To Turbidity Unit
To 4600
Series Unit
Wiper
Unit
Screen
Braid
Blue
Screen
Braid
Red
Green
White
Red
Optical Receiver
Black
3 ELECTRICAL CONNECTIONS
Fig. 3.8 Turbidity Unit Connection Box
Fig. 3.9 Model 7997 400 Series Extension Cable Connection Box
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.
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.
3.6 Turbidity Unit Connection Box – Fig. 3.8
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.