Nova-Tech LMI Series HH Metering Pump - Manual (Page 42)

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8-Pin Connector (HH9 Only)
Analog 0-20 mA Input
+0 to 20 mA Violet
-0 to 20 mA Green
This is reverse polarity protected with a 22 Ohm impedance, a
resolution or 0.1 mA and an accuracy of +/- 0.2 mA typically.
15 v Output
The +15V Output (pin 1 Red) is regulated and capable of delivering
30 mA current.
Alarm Output
This is an opto-isolated open collector Darlington pair capable of
switching 25 mA at +24 VDC to within 1V of ground typically.
Reference: 8-Pin Cable (P/N 33738)
Pin 6 Yellow
GND Pin 2 Black
The output pair turns ON when an alarm condition occurs (i.e. low
level) and remains ON until the alarm condition is cleared.
8-Pin Cable (P/N 33738)
Appendix A