1107200
Shadow VI User Manual
page 90
Chapter 4
Troubleshooting Shadow VI
Checking Relays with a Voltmeter
WARNING
!
ELECTRIC SHOCK HAZARD WHEN WORKING INSIDE ENCLOSURE WITH POWER ON
•
DO NOT touch electrical connections or circuit boards.
•
Use test equipment only on the terminals specified in the instructions.
•
Ensure that this test is performed by qualified personnel.
Failure to comply with these instructions could result in death or serious injury.
You can perform a test on the control relays in the control using a voltmeter. This test will
tell you if a relay contact is pitted or burned. When this occurs, resistance at the contact may
be so high that no current reaches the press control. Therefore, the press will not operate even
though the Shadow relay contacts are closed and the indicator light is green.
If you find a bad control relay, replace the Shadow VI Control board (see next section). To
obtain a new Control board, contact Wintriss Tech Support.
To check relays with a voltmeter, follow these steps.
1. Turn off power to Shadow.
2. Open the hinged cover of the control by loosening the locking screw. Locate the relays
on the circuit board. Refer to the location of components illustration in Chapter 2. There
are 3 relays - 2 stop relays (at location K1 and K2), and 1 status relay (at K3). Also find
terminal block TB4 (upper level). (It is illustrated in the section "Connecting stop
circuits to the control" in Chapter 2.)
3. Turn power on. Make sure the green light is on at the control. If it is not, the relays are
bad (see the previous section for an explanation), and you must replace the Shadow VI
Control board.
If the green light does go on, continue with the following steps.
4. Test the input voltage to the relays at FSD1 and FSD2 (see location of components in
Figure 2-14 of Chapter 2). If you are also using the third relay, labeled "SSD", test that
relay also. Make sure your meter is properly calibrated. The voltmeter should read 120
VAC. Verify your wiring.
NOTICE
Your press control may use 24 VDC voltage or other voltage. If so, check for these voltages.
5. Now test the relay contacts. To test relay K1, place the voltmeter leads across the FSD1
terminals on the connector. Voltage should be 0. If it is not, replace the Shadow VI
Control board. Check relay K2 by putting the leads across FSD2 terminals. If voltage is
not 0, replace the Shadow VI Control board. If you are also using the third relay, labeled
"SSD", test that relay also.
Содержание Shadow VI
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