YOKOGAWA EXA DO402G, Руководство пользователя

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<3. Installation and Wiring>
3-5
IM 12J05D02-01E
3.2.2 Wiring of DO70G
DO402G
61 +
62 ‒
65 +
66 ‒
63
21
22
23
mA1
mA2
Power supply
Contact
signal S1
Contact
signal S2
Contact signal S3 (Cleaning,
HOLD or High and Low alarms)
Grounding terminal
(M4 screw)
Protective grounding
(100 Ω or less)
S1
N
L
S2
S3
S4
High and Low alarms
and HOLD
Output signasl
(4 to 20mA DC or
0 to 20mA DC)
Output signal
(4 to 20mA DC or
0 to 20mA DC)
Remote contact input
(Cleaning start)
Note : External wiring connection terminal size is for Ø2 mm pin.
G
1
2
3
31
32
33
41
42
43
51
52
53
71
72
73
Contact signal S4/FAIL (Failure
or High and Low alarms)
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
L
N
G L
N
G
11
12
14
17
18
DO70G
Optical dissolved
oxygen sensor
*1: Always use a shielded cable with an OD of 6 to 12 mm.
*2: Be sure to ground the DO converter case grounding terminal (grounding
resistance of 100Ω or less).
*3: Always use a cable with an OD of 6 to 12 mm.
*4: The cable length between DO402G - DOX10; 1.5m
*5: At the circumstance influenced from noise (e.g. long transmission of contact
input), insertion of a relay near DO402G is recommended for insulating.
*6: In the case of use of contact input, refer to item 3.3.2.
*1
*1
*5
*6
*3
*3
*2
White
Green
Green/Yellow
Clear
Red
*3
*4
DOX10 Power supply unit
*3
*3
Power
supply
Brown
Blue
+ (BROWN)
‒ (BLUE)
Figure 3.5 Wiring of DO70G (Example)
WARNING
Never apply power to the DO402G converter and other instruments connected to the DO402G
converter until all wiring is completed.
WARNING
This product complies with the CE marking.
Where compliance with the CE marking and relevant standard is necessary, the following wiring
is required.
1. Install an external switch or circuit breaker to the power supply of the DO402G converter.
2. Use an external switch or circuit breaker rated 5A and conforming to IEC 60947-1 or IEC
60947-3.
3. It is recommended that the external switch or circuit breaker be installed in the same room
as the DO402G converter.
4. The external switch or circuit breaker should be installed within reach of the operator and
identified with marking as a power supply switch to the DO402G converter.
5. Power lines such as power cables and contact outputs should be fixed securely onto a wall
or construction using cable racks, conduit tubing, nylon bands or other appropriate ways.
Accidental removal from terminals by pulling may result in electric shock.
9th Edition: Aug. 05, 2015-00