Table of Contents
Advertisement
Chapter 6 – Maintenance
Possible Cause
Indeterminate cause
Problem: No RPM Signal
Wrong channel
selected
RPM out of range
Interrupter gap
(magnetic pickup)
too large
Small, missing, or
misaligned retro-
reflective target
(photocell)
Cable damaged
Connector damaged
Internal connections
loose and/or
damaged
Sensor failure
Problem: RPM Reading Erratic
Interrupter gap
(magnetic pickup)
too small
Small or misaligned
Honeywell Confidential: Use or disclosure of information on this page is subject to the restrictions on the title page.
Corrective Action
inspection.
See Section 6.4.2.2 "No Vibration Reading".
Check to make sure the sensor cable is
connected to the correct channel.
The incoming RPM is below or above the
instrument specifications. Adjust the unit to the
RPM being measured.
Reduce the gap between the interrupter and
magnetic pickup.
Recheck the photocell setup and alignment.
Use the correct target width.
Inspect the cable for damage, short circuits,
bent pins, and/or opens.
Inspect the connectors for damage and/or bent
pins.
Remove the connector end plate (see
Section 6.3.7.2 "Disassembly"). Inspect the
unit for loose connectors, pinched and/or
broken wires.
Replace the sensor.
Increase the gap between the interrupter and
magnetic pickup.
Recheck the photocell setup and alignment.
13841 Rev A
244
Advertisement
Chapters
Table of Contents
