- Real Time Feedback
- Displacement and force monitoring
- Force control
- Envelope function
- Combo mode
- Energy and time limits
Miniature welds are highly sensitive to even the smallest heat profile fluctuations during the resistance welding process: overheating deforms and destroys parts, while under heating results in a weak, unacceptable bond.
Precisely controlled heating, therefore, is required to achieve consistent, reliable welds.
The HF27 high frequency inverter welding machine achieves this level of control by precisely managing and monitoring both electrical AND mechanical weld parameters in a completely closed-loop process.
Perfect for automation. Can address a wide range of applications including sensitive medical device components, solar cells, automotive electronics, battery tabs, battery pack assembly and more!
Specification :
Model Number |
HF25/240 |
HF25/400 |
HF25/480 |
HF27/240 |
HF27/400 |
HF27/480 |
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Nominal Line Voltage (3 phase) |
240 VAC |
400 VAC |
480 VAC |
240 VAC |
400 VAC |
480 VAC |
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Line Voltage Range (VAC) |
192 to 264 |
320 to 440 |
384 to 528 |
192 to 264 |
320 to 440 |
384 to 528 |
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Input Circuit Rating (per phase) |
25A |
20A |
13A |
25A |
20A |
13A |
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Input KVA @ 3% duty cycle |
30KVA |
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Output KW @ Max. demand |
12KW |
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Output Transformer Voltage @ Max. Rated Output Current |
5.2V |
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Open Circuit Max. Output Voltage @ Nominal Line |
11.5V |
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Setting Ranges |
Current – 100A to 2400A; Voltage – 0.2V to 10V; Power – 50W to 10kW |
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Output Current |
2400A @ 3% duty cycle |
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Output Feedback Response Time (Current, Voltage, Power) |
40 Microseconds |
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Output Regulation versus Line Voltage Variance |
2% |
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Output Regulation versus Load Resistance Variance |
2% |
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Output Repeatability Current, Voltage, Power ± of Setting |
2% |
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Weld Period Ranges |
All segments except squeeze and hold 0.10ms to 10ms, 0.1ms steps; 10 to 99ms, 1ms steps; squeeze and hold 0 to 999ms, 1ms steps |
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Weld Energy Setting Accuracy |
Current: 2% of setting or 2A, whichever is greater; Voltage: 2% of setting or 0.050V, whichever is greater; Power: 5% of setting or 20W, whichever is greater |
Features :
Weld Heat Profile Functions |
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Weld Pulse Control |
Dual pulse with independent control of current, voltage, power or combo mode (HF27) on each pulse. |
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Squeeze, upslope 1, weld 1, downslope 1, cool, upslope 2, weld 2, downslope 2, hold. |
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Weld Schedule Memory |
Save up to 100 different weld schedules, protected from unauthorized changes. |
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Measurement Parameters |
Independent monitor of current, voltage, power, and resistance on each pulse. Envelope, time limits and energy monitor (HF27). |
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Graphic Display |
Back-lit LCD displays programmed and actual weld current, voltage or power, upper and lower limits, and resistance. |
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Measurement Selection |
Peak or average |
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Current Measurement Range/Accuracy |
50.0A to 2.400KA/± 2% of reading or ± 2A, whichever is greater. |
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Voltage Measurement Range/Accuracy |
0.2V to 9.999V/± 2% of reading or ± 0.05V, whichever is greater. |
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Power Measurement Range/Accuracy |
0.01KW to 9.999KW/± 5% of reading or ± 20W, whichever is greater. |
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Alarms |
Display alert, four user programmable AC/DC relays; audio alarm. |
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Programmable Weld Energy Limit |
Terminates weld energy when exceeding user defined current, voltage, or power limits. |
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Weld Pre-Check |
Inhibit second weld pulse when first test pulse exceeds user programmed limits. |
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Active Part Conditioner |
First pulse current limit in constant power allows second pulse to fire. |
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I/O and Data Communications |
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Input |
Input Isolation |
All inputs and outputs are fully isolated. |
ControlVoltages |
Selectable: + 5V, + 24V, sourcing or sinking inputs. |
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Firing Switch Initiation |
1-level foot switch, 2-level foot switch, mechanical or opto firing switch. |
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Remote Control |
Remote weld schedule select, process inhibit, emergency stop. |
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RS232 |
Change weld schedules and individual parameters. |
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RS485 |
Change weld schedules and individual weld parameters; “Daisy Chain” unit to unit, unit(s) to host computer. |
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Electrode Voltage
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Weld voltage signal for voltage feedback operation (0 to 10V peak). |
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Weld Head Air Valve Driver |
24 VAC, 1A; timing controlled by HF25/HF27. Operates new EZ-Air. |
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Alarm Relays |
Four user-programmable mechanical relays; programmable normally open or normally closed; contacts: |
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Displacement Option (H F27 only) |
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Capabilities |
Part detection, final thickness measurement, set down measurement, energy stop (weld to limit) |
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Accuracy of Displacement Readings Inches (mm) |
± .003 (0.076) |
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Repeatability |
± 1.0 % |
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Maximum Travel Inches (mm) |
1 (25) |
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Alarm Relays |
Additional conditions: Any LVDT, initial Lo/Hi, final Lo/Hi, displacement Lo/Hi, initial NG, displacement NG, energy stop |
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Data Output |
Initial thickness, final thickness, displacement, and any alarm condition |
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80DSPK |
Attaches to Miyachi Unitek Series 80 weld heads. Includes LVDT, interface cable, and mount |
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Force Controland M onitor (H F27 only) |
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Force Input |
0-10V input signal from signal conditioner or load cell |
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Force Measurement |
End of squeeze, end of hold |
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Force Output |
0-10V for use with proportional valve |
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Force Programming |
lbs, kg. N. force can be stored b schedule |
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Physical Characteristics |
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Dimensions (L x W x H) Inches (mm) |
18 x 9 x 12.8 (460 x 230 x 325) |
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Weight – Lbs (Kg) |
54 (25) |