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A.2 auxiliary connector j8 pinout, Appendix – American Magnetics 187 Self-Compensating Liquid Level Controller User Manual

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Appendix

Auxiliary connector J8 pinout

A.2 Auxiliary Connector J8 Pinout

The HI level and LO level contacts are provided for external use by the
customer. When a HI or LO level condition exists, the respective contact
pairs are closed. The HI and LO setpoints provide 0.05% hysteresis,
however the respective contact pairs still may “chatter” if the liquid
sloshes, bubbles, etc.

The HI level and LO level contacts also provide positive indication of a
power-off condition. With a power-off condition, both the HI level and LO
level contacts will be closed, which is a state unique to the power-off
condition.

The following table provides the specifications for the relay contacts:

Pin

Function

1

Not used

2

4-20 mA current loop output

(optional feature)

3

0-10 VDC output

(optional feature)

4

Analog output common

5 & 6

Lo level relay contacts (dry)

7 & 8

Hi level relay contacts (dry)

9

Not used

Max switching VA

10

Max switching voltage

200 VDC

Max switching current

0.5 A

Max continuous current

1.5 A

Dielectric between

contacts

200 VDC minimum

J8

Pin 1