YOKOGAWA EXA DO402G, Руководство пользователя

Страница: 27 / 95

<3. Installation and Wiring>
3-4
IM 12J05D02-01E
3.2 Wiring
CAUTION
Wiring must be performed by a qualified personnel. If this rules is not followed and a damage
occurs, Yokogawa will not be held responsible.
3.2.1 Wiring of DO30G
DO402G
61
62
65
66
63
21
22
23
13 IE
11 T1
12 T2
14
15 RE
16
mA 1
mA 2
Power supply
Contact
output S1
Contact
output S2
Contact output S3 (cleaning,
HOLD or high and low alarms)
Contact output S4/FAIL
(failure or high and low alarms)
Grounding terminal (M4 screw)
S1
N
L
S2
S3
S4
High and low
alarms or HOLD
DO30G
DO sensor
WTB10 Terminal box
Output signal
(4 to 20mA DC or 0 to 20mA DC)
Output signal
(4 to 20mA DC or 0 to 20mA DC)
Contact input
(cleaning start command)
Note : External wiring connection terminal size is for Ø2 mm pin.
Protective grounding (100 Ω or less)
1
2
3
31
32
33
41
42
43
51
52
53
71
72
73
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
G
SCREEN
SCREEN
17
Jumper
Shield
Liquid earth *6
*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 100 Ω or less).
*3: Always use a cable with an OD of 6 to 12 mm.
*4: Terminal box is used only where DO converter is installed long distance from DO sensor. (ordinary not needed)
*5: This cable is specified in the Basic Code for the WTB10.
*6: Liquid earth to detect membrane failure. This function is available when using PB350G/PB360G float type holder.
Connect only when using this function.
*7: In the case of use of contact input, refer to item 3.3.2.
13
11
12
14
15
16
*4
*1
*1
*7
*3
*3
*3
*2
*5
Figure 3.4 Wiring of DO30G (Example)
9th Edition: Aug. 05, 2015-00