Hach ORBISPHERE 410, Руководство пользователя, Страница: 31 / 98

30
Installation
3.7.4 Measurement board
The different measurement boards for the EC and TC sensors are illustrated in Figure 13 and
Figure 14 below. The type of board is easily identified by the color of the J8 connector. For EC
boards this connector is colored orange, and for TC boards it is colored black.
The colors indicated are the wire colors in the sensor cable.
NOTICE
It is extremely important that sensors are connected to the correct measurement board.
Connecting a TC sensor to an EC measurement board (and vice versa) will cause irreparable
damage to the measurement board.
Figure 13 EC Measurement board
Figure 14 TC Measurement board
Figure 15 Connector J7
Figure 16 Connector J8
Connector J7 (inputs & outputs)
Measurement alarms relays
1.
Common
2.
Output relay 1
3.
Output relay 2
4.
Output relay 3
Note:
Relays N.O. or N.C. depends on the jumper
position on the relays. Refer to Measurement alarm
relays on page 31 .
Analog current (or voltage) outputs
5.
Analog GND
6.
Output 1
7.
Output 2
8.
Output 3
Digital inputs
9.
EC sensor: Not used
TC sensor: Hold input. To deactivate the
sensor from a PLC system, connect a dry
contact between J7.9 and J7.12
10.
Not used
11.
Not used
12.
Digital GND
13. to 16.
Not used