ABB Navigator ADS551 Instruction page 7

TB1 TB3 TB5
Screen
White Screen Black
Red
Green Black Red White
E
Fig. 6.6 Replacing the temperature sensor assembly
Navigator ADS551 | Low level dissolved oxygen | Replacement / Upgrade procedures – wet section spares | INS/ANAINST/025-EN Rev. B
TB4 TB2
Blue Red Brown Black
Red
F
6.6 Replacing the Modbus cable assembly
Part numbers:
— AW502 090 / 1.5 m (4.9 ft.)
— AW502 091 / 5 m (16.4 ft.)
— AW502 092 / 10 m (32.8 ft.)
— AW502 093 / 20 m (65.6 ft.)
Referring to Fig. 6.1, page 4:
1. Remove the PCB cover.
Referring to Fig. 6.7:
2. Loosen cable gland A at the wet-section PCB housing
B and disconnect the Modbus cable C from terminal
block connections D (TB1) marked white, green, screen,
black and red.
3. Withdraw Modbus cable C from the PCB housing and
flowcell case assembly and discard.
4. Feed the replacement Modbus cable through cable gland
A and remake connections to the (TB1) white, green,
screen, red and black terminal connections at the wet
section PCB and at the transmitter.
5. Refit the PCB cover by reversing the removal procedure.
TB1 TB3
White Screen
Red
Red
Black
Green
Fig. 6.7 Replacing the Modbus cable assembly
TB5 TB4 TB2
Screen Blue Red Brown Black
Black
White Red
7