Maintenance Alarm - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

SENSOR INFORMATION (vibration)
Maintenance Alarm (LZ12 Vibration only): For optimum performance and proactive maintenance, the sensor
automatically adjusts for coating, and if necessary, outputs a preventative maintenance alarm. The Yellow
wire is a NPN transistor designed to switch when a build up of material prevents the vibration switch from
operating at its operational frequency. Use the Yellow wire to identify when the Vibration switch requires
cleaning. To wire the maintenance output wire to an LED, follow the wiring diagram below. The Yellow wire is
connected to the LED and a 2.2k resistor in series and referenced back to the (+) of the power supply.
To wire the maintenance output wire to a PLC, follow the wiring diagram below. The Yellow wire is connected
to the PLC input with a 10 k resistor parallel to the PLC input and the (+) of the power supply.
Rev A
Sensor Power
[RED & BLK wires] / 36 VDC Max.
5 ±1mA Dry / 22 ±1mA Wet
Relay Rating
[GRN & WHT wires] / 60 VA

Maintenance Alarm

[YEL wire] / NPN Transistor / 10mA Max.
Sensor Power
[RED & BLK wires] / 36 VDC Max.
5 ±1mA Dry / 22 ±1mA Wet
Relay Rating
[GRN & WHT wires] / 60 VA
Maintenance Alarm
[YEL wire] / NPN Transistor / 10mA Max.
LO900002
Step Three
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