Procedure To Test Speed Sensor Extension Cables - Raven SCS 460 Installation & Service Manual

PROCEDURE TO TEST SPEED SENSOR EXTENSION CABLES

Verify that the Console is in the SP1 Speed Sensor mode while testing the cable.
Disconnect extension cable from Speed Sensor Assembly cable. Hold extension cable
connector so that keyway is pointing in the 12 o'clock position.
PIN DESIGNATIONS
2 o'clock socket location is power.
10 o'clock socket location is ground.
6 o'clock socket location is signal.
VOLTAGE READINGS
1) 10 o'clock socket to 6 o'clock socket = +5 VDC.
2) 10 o'clock socket to 2 o'clock socket = +5 VDC.
If a +5 VDC voltage reading is not present, disconnect
the Flow Sensor cable.
restored, Test the Flow Sensor cable per Appendix
"PROCEDURE TO TEST FLOW METER CABLES".
PROCEDURE TO CHECK CABLE:
l) Enter SPEED CAL number of 1000 in key labelled
2) Depress key labelled
3) With small jumper wire (or paper clip), short between the 10 o'clock and 6 o'clock
sockets with a "short-no short" motion. Each time a contact is made, the DISTANCE
total should increase by increments of 1 or more counts.
4) If DISTANCE does not increase, remove the section of cable and repeat test at
connector next closest to Console.
5) Perform above voltage checks.
6) If all cables test good, replace Speed Sensor.
NOTE: After testing is complete, re-enter correct SPEED CAL number before
application.
APPENDIX 4
If the Speed reading is
Replace defective cable as required.
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