PAGE 56
Er 4 - RTD Mismatch Error 1. Check the connections to the instrument for the
RTD Input Calibration CAL5 as described in the
Calibration section (page 47). Repeat the RTD
Input Calibration.
Er 5 - No Zero Crossings 1. Turn off the power to the instrument. Wait 5
Detected seconds and turn the power on.
2. Turn off the instrument power. Loosen the front
panel screw and remove the instrument from the
housing. Inspect the white ribbon cable that
connects the Processor board to the Power
Supply board. Be sure that the cable is properly
aligned and seated in the socket on the Power
Supply board. Return the instrument to the
housing and tighten the front panel screw. Turn
on the power to the instrument.
3. Connect the instrument to another AC power
source.
Er 6 - AC line below 45 HZ 1. Turn off the power to the instrument. Wait 5
seconds and turn the power on.
2. Turn off the instrument power. Loosen the front
panel screw and remove the instrument from the
housing. Inspect the white ribbon cable that
connects the Processor board to the Power
Supply board. Be sure that the cable is properly
aligned and seated in the socket on the Power
Supply board. Return the instrument to the
housing and tighten the front panel screw. Turn
on the power to the instrument.
3. Connect the instrument to another AC power
source.
Er 7 - AC line over 65 HZ 1. Turn off the power to the instrument. Wait 5
seconds and turn the power on.
2. Turn off the instrument power. Loosen the front
panel screw and remove the instrument from the
housing. Inspect the white ribbon cable that
connects the Processor board to the Power
Supply board. Be sure that the cable is properly
aligned and seated in the socket on the Power
Supply board.
Er 8 - Cal 2 Volt Input Error 1. Check that 50 mVDC is properly connected to the
instrument and is within the tolerance limits as
indicated in the CAL 2 procedure of the Calibration
section (page 45).
2. Loosen the front panel screw and remove the
instrument from the housing. Inspect the
Processor board (Appendix A-2, page 60) to
insure that the input conditioning jumper JU 1 is in
the non-volt position.
3. Perform the CAL 2 procedure as described in the
Calibration section (page 45).
Er 9 - ADC Reference Number 1. Perform the CAL 2 procedure as described in the
Error Calibration section (page 45).
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