YOKOGAWA vigilantplant DM8, User Manual

Page: 37 / 63

<3. INSTALLATION, PIPING AND WIRING>
3-12
IM 12T03A01-02E
3.4 Wiring
The vibration type density meter requires the following wirings:
(1) Wiring between analog output signal
(2) Wiring for analog output signal
(3) Wiring for digital output signal (10 m or less length is recommended).
(4) Wiring for contact output for abnormal status
(5) Wiring for power supplying
(6) Wiring for grounding
Figure 3.19 is a diagram of these wirings.
A2
A3
A4
A6
A5
B4
B5
A2
A3
A4
A6
A5
B4
B5
RED
BLUE
YELLOW
BROWN
GREEN
WHITE
GRAY
N.C
C
SG
RD
TD
+
-
+
-
G
G L1 L2
Detector Special cable*1 Converter
Power supply
Alarm
0 to 1V DC
4 to 20mA DC
RS-232C
Closed when a failure is
detected or the power
fails.
• Density signal after being
converted to the reference
temperature state
• Density signal before being
converted to the reference
temperature state
• Temperature signal
Density signal after being
converted to the reference
temperature state
*1: If you choose /KC, the ferrite core of accessories must be attached at the both ends of the
Special
cable.
Figure 3.19 Wiring Diagram
The cable inlet of the density detector is located at the bottom of the terminal box. The density
converter has five cable inlets and their size is 27 mm. A cable can pass any inlet of them (one
cable to one inlet). Figure 3.20 shows an example of allocated inlets.
Power supply
Contact output for abnormal status Digital output signal
Inlet of special cable
Analog output signal
Figure 3.20 Cable Inlet of Density Converter
Figure 3.21 shows terminal arrangement of the density detector.
A2 A3 A5 B4
A4 A6 B5
Terminals Function
B4
B5
A2
A3
A4
A5
A6
Output Frequency
Temperature Sensor
Power Supply for Pre-amp
Impressed Voltage for Pick-up Electrode
Earth Terminal
Figure 3.21 Terminal Arrangement of Density Detector
5th Edition : Dec. 11, 2015-00