Yokogawa DO402 Dissolved Oxygen Analyzer - Manual (Page 26)

IM 12J05D02-01E
3-6 Installation and wiring
3-3-2. Access to terminal and cable entry
Terminals 1 and 2 on the bottom terminal strip are used for the power supply. Guide the power cables
through the gland closest to the power supply terminals. The terminals will accept wires of 2.5 mm
2 (14
AWG). Use cable finishings if possible.
Connect the wires as indicated in the wiring diagram (refer to figure 3-6).
High Voltage Section
A B C
D E F
D E F
CONT ACT (S3, S4/FAIL)
OUTPUT CABLE (S)
CONT ACT (S1, S2)
OUTPUT CABLE (S)
POWER CABLE
A B C
POWER CABLE
for DO70G or
COMMUNICATION
INPUT CONTACT
SENSOR CABLE (S) ANALOG OUTPUTS
CABLE
Suitable for cables with an outside diameter between 6 - 12 mm (0.24 - 0.47 in.)
Figure 3-7. Glands to be used for cabling
71
S4 S3 S2 S1
C NC NO
72 73 51 52 53 41 43 31 33 42 32
FUSE
100
115
230
250VAC; T
3 1 2
C NC NO C NC NO C NC NO
VAC
VAC
VAC 200 mA
200 mA
100 mA
Relay Contacts Power Supply
12 13 15 16 63 66 65 62 61 95 94 93 92 91
SCREEN
mA2 mA1
SCREEN
TL TL
17 11
Sensor Inputs mA Outputs
Digital
Communications
Contact
Input
CONT SENSOR mA OUTPUT RS485
14 22 21
- - - optical sensor and polarographic sensor galvanic sensor
High voltage compartment
G N L
18
Liquid
earth Shield
Temp
SCREEN
99
SCREEN 2
23
250VAC
5A
100VA
250VDC
5A
50W
Figure 3-8. Input and output connections