Troubleshooting Guide for Newall Digital Readout Systems
Contents
1. 3 Take the reader head cable from the malfunctioning axis and plug it into the other axis of the display You may need to get into setup mode and ensure that this axis is set up to read the correct type of scale 4 If the malfunction was corrected when the cable was moved to the other axis the source of the fault is the display The display will need repaired 5 If the malfunction followed the cable to the other axis the source of the fault is the reader head and scale assembly If this is the case proceed to the next step 6 Check for any physical damage to the reader head and cable 7 Check the reader head for proper alignment It must be aligned within 002 on each side Refer to the installation manual for instructions on reader head alignment 8 Check the scale to make sure there is no binding on the scale If the scale brackets are slightly loosened you should be able to slide the scale back and forth through the brackets with minimal resistance 9 If you have a Spherosyn scale ensure that the scale is not bent Remove the scale and roll it on a flat surface If the scale is bent at all it will cause inaccuracies Replace scale if bent 10 If there is no binding on the scale the reader head is aligned and the scale is not bent the malfunction must be coming from the reader head Replace the reader head Display shows Signal Fail or No Signal in one axis Disconnect the external power supply from the2. NEWALL Digital Readout Systems Linear Encoders Troubleshooting Guide for Newall Digital Readout Systems For Display Models A50 C80 C70 DP700 This Troubleshooting Guide is intended for use in conjunction with the applicable user manuals Please follow the troubleshooting steps below and call our Tech Support Department at 1 800 229 4376 with the results Nothing happens when the power is turned on Axis windows are blank Test the AC input voltage to the external power supply unit using a voltmeter It should be 100 240VAC Test the DC output of the external power supply unit with a voltmeter It should be 15 24VDC Disconnect the external power supply from the back of the display Disconnect all reader head cables from the back of the display A defective reader head could prevent the display from powering up Reconnect the external power supply to the back of the display dl i pr Inaccuracy in one axis 1 Get into Setup mode and check the following settings a Linear Compensation Set to 0 on all axes b Scale Type Input Type Set to read the correct scale type Spherosyn Microsyn 5 Microsyn 10 c Radius Diameter Diameter will display a 2 1 ratio Radius will display a 1 1 ratio 2 Puta dial indicator on the edge of the reader head Move the axis Compare the dial indicator reading to the display reading If there is a discrepancy that exceeds our accuracy specifications proceed to the next step
3. back of the display Take the reader head cable from the malfunctioning axis and plug it into the other axis of the display Reconnect the external power supply to the back of the display If the scale works properly when connected to the other axis of the display the source of the fault is the display The display will need repaired Note You may need to get into setup mode and adjust the scale type radius diameter and linear compensation set to 0 parameters to get accurate readings The main goal in this step is to identify the source of the signal fail no signal error 5 Ifthe malfunction followed the scale cable to the other axis of the display the source of the fault is the reader head Replace the reader head Note Signal Fail or No Signal errors can NOT be caused by incorrect parameter setting Pah V7 21 10
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