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HF-2700A, HF-2500A - High Frequency Inverter Spot Welding Power Supply (formerly known as HF27, HF25)
The controls found on the HF-2700A, HF-2500A High Frequency Inverter Spot Welding Power Supply address the challenges of micro joining for a wide range of applications. Miniature welds are highly sensitive to small heat profile fluctuations in the resistance welding process. Overheating deforms and destroys parts, while underheating results in a weak and unacceptable bond. To achieve consistent, reliable welds of small to micro-miniature parts, heating needs to be precisely controlled. This necessitates superior control of the energy output. The HF-2700A, HF-2500A High Frequency Inverter Spot Welding Power Supply are also geared for automation featuring exceptional repetition rates, standard I/O connections and remote programming capability.
Key features HF-2700A, HF-2500A - High Frequency Inverter Spot Welding Power Supply
Control features
- Constant current, voltage, and power modes
- Monitors energy and resistance
- 2400 A maximum
- 25 kHz feedback
Weld Quality Process Tools
- Active Part Conditioning (APC)
- Pre-Weld Check
- Weld to Limits
HF-2700A Advanced Features
- Displacement and force monitoring
- Force control
- Envelope function
- Combo mod
- Energy and time limits
| Model number | HF-2500A/240 | HF-2500A/400 | HF-2500A/480 | HF-2700A/240 | HF-2700A/400 | HF-2700A/480 |
|---|---|---|---|---|---|---|
| Nominal line voltage (3 phase) | 240 VAC | 400 VAC | 480 VAC | 240 VAC | 400 VAC | 480 VAC |
| Line voltage range (vac) | 192 to 264 | 320 to 440 | 384 to 528 | 192 to 264 | 320 to 440 | 384 to 528 |
| Input circuit rating (per phase) | 25 A | 20 A | 13 A | 25 A | 20 A | 13 A |
| Input KVA @ 3% duty cycle | 30 KVA | 30 KVA | 30 KVA | 30 KVA | 30 KVA | 30 KVA |
| Output KW @ max. demand | 12 KW | 12 KW | 12 KW | 12 KW | 12 KW | 12 KW |
| Output transformer voltage @ max. rated output current | 5.2 V | 5.2 V | 5.2 V | 5.2 V | 5.2 V | 5.2 V |
| Open circuit max. output voltage @ nominal line | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V |
| Setting ranges | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW | Current – 100 A to 2400 A; Voltage – 0.2 V to 10 V; Power – 50 W to 10 kW |
| Output current | 2400 A @ 3% duty cycle | 2400 A @ 3% duty cycle | 2400 A @ 3% duty cycle | 2400 A @ 3% duty cycle | 2400 A @ 3% duty cycle | 2400 A @ 3% duty cycle |
| Output feedback response time (current, voltage, power) | 40 Microseconds | 40 Microseconds | 40 Microseconds | 40 Microseconds | 40 Microseconds | 40 Microseconds |
| Output regulation versus line voltage variance | 2% | 2% | 2% | 2% | 2% | 2% |
| Output regulation versus load resistance variance | 2% | 2% | 2% | 2% | 2% | 2% |
| Output repeatability current, voltage, power ± of setting | 2% | 2% | 2% | 2% | 2% | 2% |
| Weld period ranges | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps | All segments except squeeze and hold 0.10 ms to 10 ms, 0.1 ms steps; 10 to 99 ms, 1 ms steps; squeeze and hold 0 to 999 ms, 1 ms steps |
| Weld energy setting accuracy | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater | Current: 2% of setting or 2 A, whichever is greater; Voltage: 2% of setting or 0.050 V, whichever is greater; Power: 5% of setting or 20 W, whichever is greater |
| WELD HEAD PROFILE FUNCTIONS | ||||||
| Weld pulse control | Dual pulse with independent control of current, voltage, power or combo mode (HF27) on each pulse. | |||||
| Programmable weld pulse segments | Squeeze, upslope 1, weld 1, downslope 1, cool, upslope 2, weld 2, downslope 2, hold. | |||||
| Weld schedule memory | Save up to 100 different weld schedules, protected from unauthorized changes. | |||||
| Measurement parameters | Independent monitor of current, voltage, power, and resistance on each pulse. Envelope, time limits and energy monitor (HF27). | |||||
| Graphic display | Back-lit LCD displays programmed and actual weld current, voltage or power, upper and lower limits, and resistance. | |||||
| Measurement selection | Peak or average | |||||
| Current measurement range / accuracy | 50.0 A to 2.400 KA/±2% of reading or ±2 A, whichever is greater. | |||||
| Voltage measurement range / accuracy | 0.2 V to 9.999 V/±2% of reading or ±0.05 V, whichever is greater. | |||||
| Power measurement range / accuracy | 0.01 KW to 9.999 KW/±5% of reading or ±20 W, whichever is greater. | |||||
| Alarms | Display alert, four user programmable AC/DC relays; audio alarm. | |||||
| Programmable weld energy limit | Terminates weld energy when exceeding user defined current, voltage, or power limits. | |||||
| Weld pre-check | Inhibit second weld pulse when first test pulse exceeds user programmed limits. | |||||
| Active part conditioner | First pulse current limit in constant power allows second pulse to fire. | |||||
| I/O AND DATACOMMUNICATIONS | ||||||
| Input: Input Isolation | All inputs and outputs are fully isolated. | |||||
| Input: Control voltages | Selectable: +5 V, +24 V, sourcing or sinking inputs. | |||||
| Input: Firing switch initiation | 1-level foot switch, 2-level foot switch, mechanical or opto firing switch. | |||||
| Input: Remote control | Remote weld schedule select, process inhibit, emergency stop. | |||||
| Input: RS232 | Change weld schedules and individual parameters. | |||||
| Input: RS485 | Change weld schedules and individual weld parameters; “Daisy Chain” unit to unit, unit(s) to host computer. | |||||
| Input: Electrode voltage | Weld voltage signal for voltage feedback operation (0 to 10 V peak). | |||||
| Weld head air valve driver | 24 VAC, 1 A; timing controlled by HF-2500A/HF-2700A. Operates new EZ-Air. | |||||
| Alarm relays | Four user-programmable mechanical relays; programmable normally open or normally closed; contacts: 250 VAC at 5 A; 30 VDC at 5 A. Conditions: weld, end of weld, alarm, out of limits. | |||||
| DISPLACEMENT OPTION (HF-2700A ONLY) | ||||||
| Capabilities | Part detection, final thickness measurement, set down measurement, energy stop (weld to limit) | |||||
| Accuracy of displacement readings | ± .003 in (0.076 mm) | |||||
| Repeatability | ± 1.0 % | |||||
| Maximum travel | 1 in (25 mm) | |||||
| Alarm relays | Additional conditions: any LVDT, initial Lo/Hi, final Lo/Hi, displacement Lo/Hi, initial NG, displacement NG, energy stop | |||||
| Data output | Initial thickness, final thickness, displacement, and any alarm condition | |||||
| FORCE CONTROL AND MONITOR (HF-2700A ONLY) | ||||||
| Force input | 0 - 10 V input signal from signal conditioner or load cell | |||||
| Force measurement | End of squeeze, end of hold | |||||
| Force output | 0 - 10 V for use with proportional valve | |||||
| Force programming | lbs, kg. N. force can be stored by schedule | |||||
| WEIGHT & DIMENSIONS | ||||||
| Dimensions (LxWxH) | 460 mm x 230 mm x 325 mm (18 in x 9 in x 12.8 in) | |||||
| Weight | 25 kg (54 lb) |
Customized Solutions
Send your sample to one of our technology centers in Europe for an evaluation. We will then determine which solution meets your needs best. AMADA WELD TECH offers feasibility testing and application consulting.