Hach 9586sc Basic User Manual page 10

5.2 Wiring overview
Figure 2 shows an overview of the wiring connections inside the controller with the high voltage
barrier removed. The left side of the figure shows the back side of the controller cover.
Note: Remove connector caps from the connectors before module installation.
Figure 2 Wiring connections overview
1 Service cable connection
2
2 4-20 mA output
3 Sensor module connector
4 Communication module
connector (e.g., Modbus,
Profibus, HART, optional
4-20 mA module, etc.)
5.2.1 High-voltage barrier
High-voltage wiring for the controller is located behind the high-voltage barrier in the controller
enclosure. The barrier must remain in place except when installing modules or when a qualified
installation technician is wiring for power, alarms, outputs or relays. Do not remove the barrier while
power is applied to the controller.
5.2.2 Wiring for power
Potential Electrocution Hazard. Always disconnect power to the instrument when making
electrical connections.
2
Terminals can be removed for improved access.
10 English
5 AC and DC power
2
connector
6 Ground terminals
2
7 Relay connections
8 Digital sensor connector
W A R N I N G
9 Discrete input wiring
2
connector
10 Digital sensor connector
2
2