72
100-412-183 REV. 13
5.6
Converter Cooling
Converter performance and reliability can be adversely affected if the converter ceramics
are subjected to temperatures above 140º F (60º C). The converter front driver
temperature should not exceed 122º F (50º C).
To prolong converter life and maintain a high degree of system reliability, the converter
should be cooled with clean, dry, compressed air, particularly if your application calls for
continuous ultrasonic operation. Converter cooling is especially critical in 40 kHz
applications.
Use one of the following procedures to determine if a converter is operating close to the
maximum allowable temperature. Check converter temperature immediately after
substantial machine operation and without power applied to the horn.
• Press a pyrometer probe (or similar temperature measuring device) against the front driver of
the converter assembly. Wait for the probe to reach the temperature of the shell. If the
temperature is 120º F (49º C) or higher, the converter requires a cooling air stream
• If a temperature measuring device is unavailable, use your hand to feel the shell of the converter.
If the converter is hot to touch, the converter requires a cooling air stream
High duty cycles require additional cooling for the converter. System average power must
be limited to the specified continuous maximum. Higher peak power, up to the maximum
acceptable power limit, with an on time of up to 10 seconds may be obtained, if
appropriate off time ensures that, on average, the continuous duty maximum power is not
exceeded.
Table 5.20 Continuous Duty Max. Power & Full Power Duty Cycle
Configuration
Continuous Duty
Max. Power
Full Power Duty Cycle
20 kHz / 1250 W
800 W
10 s on 10 s off (50% Duty Cycle)
20 kHz / 2500 W
1600 W
10 s on 10 s off (50% Duty Cycle)
20 kHz / 4000 W
2000 W
5 s on 15 s off (25% Duty Cycle)
30 kHz / 750 W
300 W
2 s on 2 s off (50% Duty Cycle)
30 kHz / 1500 W
800 W
2 s on 2 s off (50% Duty Cycle)
40 kHz / 400 W
300 W
10 s on 10 s off (50% Duty Cycle)
40 kHz / 800 W
400 W
10 s on 10 s off (50% Duty Cycle)
Summary of Contents for DCX S
Page 4: ...iv 100 412 183 REV 13 ...
Page 22: ...12 100 412 183 REV 13 ...
Page 36: ...26 100 412 183 REV 13 ...
Page 47: ...100 412 183 REV 13 37 4 3 Declaration of Conformity Figure 4 1 Declaration of Conformity ...
Page 50: ...40 100 412 183 REV 13 ...
Page 54: ...44 100 412 183 REV 13 Figure 5 1 DCX S Power Supply Benchtop Dimensional Drawing ...
Page 86: ...76 100 412 183 REV 13 ...
Page 87: ...100 412 183 REV 13 77 Chapter 6 Converters and Boosters 6 1 Converters and Boosters 78 ...
Page 120: ...110 100 412 183 REV 13 ...
Page 137: ...100 412 183 REV 13 127 8 5 Circuit Diagram Figure 8 2 Interconnect Diagram Power Supply ...
Page 144: ...134 100 412 183 REV 13 ...
Page 145: ...100 412 183 REV 13 135 Appendix A Timing Diagrams A 1 Timing Diagrams 136 ...
Page 147: ...100 412 183 REV 13 137 Appendix B Signal Diagrams B 1 Signal Diagrams 138 ...
Page 154: ...144 100 412 183 REV 13 ...
