Capacitive Discharge, Fine-Spot Resistance Welder
Datasheet
CD150DP / CD300DP / CD600DP |
- Dual Pulse operation removes surface inconsistencies and contaminants
- Single or Dual Pulse operation
- Adjustable pulse width
- Available in 150ws, 300ws, and 600ws
- Adjustable from 1% to 100% energy discharge
- Up to 166 welds/min
- Simple, user-friendly interface
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Sunstone Dual Pulse Resistance Welders
Capacitive resistance welders, also called capacitive discharge or CD welders, have many advantages over other welder types:
- Quick energy release for welding highly conductive metals such as copper
- Small heat effected weld zones
- Repeatable energy release independent of line voltage fluctuations
- Capable of extremely fine energy adjustment
Weld nugget formation takes place during the first few milli-seconds of the welding process. A CD welder allows extremely fast energy release with large peak currents. More of the energy goes into weld formation and less into heating surrounding material. The heat affected zone, where the properties of the metal have been changed by rapid heating and cooling, is localized to a small area around the weld spot. The quick discharge rate of CD welders also allows electrically and thermally conductive materials, such as copper or aluminum, to be welded. Capacitive welders deliver repeatable welds even during line voltage fluctuations because weld energy is stored before use. Weld very small parts by turning down the weld energy to less than 1% of its full value. Tables 1-4 give additional technical details. |
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Table 1: Sunstone Dual Pulse Resistance Welder Technical Specifications
| Feature |
CD150DP / CD300DP / CD450DP / CD700DP |
| Dual Pulse |
Yes |
| Pulse 1 Energy Adjustment (% of set-point energy) |
1% - 50% |
| Pulse 2 Energy Adjustment (% of set-point energy) |
1%-100% |
| Peak Current |
4000 - 5000 Amps |
Table 2: Weld speed in welds per minute by Dual Pulse model number at maximum energy set-point.
Pulse Width
(at max energy) |
Rep Rate
CD150DP
welds/min
(pulse energy) |
Rep Rate
CD300DP
welds/min
(pulse energy) |
Rep Rate
CD450DP
welds/min
(pulse energy) |
Rep Rate
CD700DP
welds/min
(pulse energy) |
| 5% |
166 (7.5ws) |
166 (15ws) |
166 (23ws) |
166 (38ws) |
| 25% |
166 (38ws) |
166 (75ws) |
166 (113ws) |
166 (188ws) |
| 50% |
166 (75ws) |
166 (150ws) |
150 (225ws) |
120 (375ws) |
| 100% |
166 (150ws) |
89 (300ws) |
59 (450ws) |
36 (700ws) |
Table 3: Weld Pulse Characteristics
| Model |
Min and Max
Output |
Capacitor Bank |
Pulse Width |
Rise Time
(to max voltage) |
Min Pulse Height |
| CD150DP |
0.2 ws - 150 ws |
800,000 uF |
Min |
0.1 ms |
0.4 ms |
0.5 V |
| |
|
|
Max |
10 ms |
0.4 ms |
0.5 V |
| CD300DP |
0.4 ws - 300 ws |
1,600,000 uF |
Min |
0.1 ms |
0.4 ms |
0.5 V |
| |
|
|
Max |
20 ms |
0.4 ms |
0.5 V |
| CD450DP |
0.6 ws - 450 ws |
2,400,000 uF |
Min |
0.1 ms |
0.4 ms |
0.5 V |
| |
|
|
Max |
30 ms |
0.4 ms |
0.5 V |
| CD700DP |
0.6 ws - 700 ws |
2,400,000 uF |
Min |
0.1 ms |
0.6 ms |
0.5 V |
| |
|
|
Max |
30 ms |
0.6 ms |
0.5 V |
Table 4: Physical Characteristics
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CD150DP |
CD1300DP |
CD450DP |
CD700DP |
| Inches |
cm |
Inches |
cm |
Inches |
cm |
Inches |
cm |
| Height |
10.5 |
26.7 |
10.5 |
26.7 |
10.5 |
26.7 |
10.5 |
26.7 |
| Width |
12.0 |
30.5 |
12.0 |
30.5 |
12.0 |
30.5 |
12.0 |
30.5 |
| Depth |
13.5 |
34.3 |
13.5 |
34.3 |
13.5 |
34.3 |
13.5 |
34.3 |
| Weight |
35 lbs. (16 kg) |
38 lbs. (17 kg) |
40 lbs. (18 kg) |
45 lbs. (21 kg) |
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