Procedure To Test Speed Sensor Extension Cables - Raven DCS 410 Installation & Service Manual

PROCEDURE TO TEST SPEED SENSOR EXTENSION CABLES

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 or +12
VDC (RADAR).
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 9999 in
2) Depress
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.
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
.
.
Each time a contact is made,
Replace defective cable as required.
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