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

PROCEDURE TO TEST SPEED SENSOR EXTENSION
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. If the Speed reading is 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. Replace defective cable as required.
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
CABLES
.
40
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