Hach ORBISPHERE K1000 Manual Básico Del Usuario página 12

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4.7.2 Measurement board

Figure 6 Measurement board

Connector J7 (inputs & outputs)

The numbers listed below refer to the 16 available J7 connections (from left to right) in

Measurement alarms relays:

2. Output relay 1

3. Output relay 2

4. Output relay 3

Digital inputs:

9. Hold input. To deactivate the sensor from a PLC system, connect a dry contact

between J7.9 and J7.12

Note: It is recommended to use this functionality in order to extend the sensor lifetime for

installations with a CIP process that can damage the spot.

10. to 11. Not used

12. Digital GND

13. to 16. Not used

4.7.3 Measurement alarm relays

The three output relays are located on the measurement board.

They can be individually configured to Normally Open (NO) or to Normally Closed (NC) by

physically moving the jumper on each relay. On the illustration:

• Upper relay is set to NC

• Middle relay is set to NO

• Lower relay is shown with no jumper

Note: J14 is relay 1, J18 is relay 2, J19 is relay 3

Note: The output relays are in alarm condition when the instrument power is set to off.

Figure 7 Connector J7

Analog current

5. Analog GND