AMADA
Fine Spot Welders
AC controlled welding power suppies
AC controlled welding power supply: MEA-100B
Features
- ■ Four welding current control systems are currently available for the MEA-100B. Select the control system best suited to the particular workpiece.
- ①Multi-Cycle Welding + Secondary Constant-Current Control
Returns welding current feedback to the control at each half-cycle, using the toroidal coil. The control makes adjustments based on this feedback to maintain a constant current, compensating for voltage fluctuation and workpiece load variances. - ②Multi-Cycle Welding + Power Supply Voltage Fluctuation Compensation Control
Monitors and compensates for power supply voltage fluctuation to maintain a constant current. Compensation begins from the first half-cycle. - ③Single-Cycle Welding + Power Supply Voltage Fluctuation Compensation Control
Permits the flow of one cycle current only. You can set the first half wave and the second half wave separately. Compensation begins with the first half wave. - ④Half-Cycle Welding + Power Supply Voltage Fluctuation Compensation Control
Permits the flow of one half-cycle current only. The direction of the current is inverted with each current flow.
| Controlling: current mode | Multi-cycle welding | Single-cycle welding | Half-cycle welding |
| Power supply voltage fluctuation compensation control | ○ | ○ | ○ |
| Secondary constant-currenet mode | ○ | － | － |
- ■ An automatic maximum current configuration.
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The maximum current setting is automatically configured through test run to optimize the performance of the device.
- ■ The welding current is monitored using the a toroidal coil.
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The upper and lower current limits can be fixed. This will aid the welding quality control.
- ■ Support for export.
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CE marking and CCC supported. There are also 480V version for USA.
Specifications
| Model | MEA-100B | |
| Power requirement | Single-phase Automatic switching (The voltage can be switched, but the factory setting is fixed.) | |
| Maximum capacity | 60 kVA (Duty cycle: 1.3% when 200 V AC is input) / 66 kVA (Duty cycle: 1.3% when 220 V AC is input) / 68 kVA (Duty cycle: 2% when 380 V AC is input) / 72 kVA (Duty cycle: 2% when 400 V AC is input) / 86 kVA (Duty cycle: 2% when 480 V AC is input) | |
| Control method | 1. Secondary constant current control type 2. Power supply voltage fluctuation compensation control type |
|
| Welding current control | 1. Multi - cycle welding 2. Single - cycle welding 3. Half - cycle welding |
|
| Control speed | Half - cycle | |
| Current accuracy | For secondary constant current control | ±2% max. of power supply voltage fluctuation ±10% ±2% max. of load fluctuation ±10% ±2% max. of load fluctuation ±10% |
| For power supply voltage fluctuation compensation control | ±3% max. of power supply voltage fluctuation ±10% | |
| Timer setting (31 schedules) | Multi - cycle welding | Squeeze, weld 1, cool, weld 2, hold ... 00 - 99cycles Upslope 1, upslope 2, downslope 0 - 9cycles Pulsation 1 - 9times |
| Single - cycle welding | Squeeze, 00 - 99cycles First-half wave, second-half wave 0.5cycle | |
| Half - cycle welding | Squeeze, 00 - 99cycles Half wave 0.5cycle | |
| Current value setting range (31 schedules) | For secondary constant current control | Current value 1, current value 2 ... 0.20 - 9.99kA (0.01kA unit) |
| For power supply voltage fluctuation compensation control | Current value 1, current value 2 ... 10.0 - 99.9kA (0.1% unit) | |
| Current monitoring (31 schedules) | For secondary constant current control | Upper limit setting: +1 to +49% Lower limit setting: -1 to -49% |
| For power supply voltage fluctuation compensation control | Upper limit setting: 0.01 - 9.99kA (0.01kA unit) Lower limit setting: 0.01 - 9.99kA (0.01kA unit) | |
| Options | Toroidal coil MB-35E (Required for secondary constant current control) | |
| External communication function | Bi-directional communication | |
| Ambient temperature and huidity | Temperature = 0 to 45°C Humidity = 90% max.(No condensation) Altitude: 1000meters or lower |
|
| Power consumption | For standby 15W max. | |
| Mass | 6.5kg | |
Transformers that are selectable
| Model | MT-510AC | MT-520AC | MT-530A *1 | MT-25, MT-25A |
| Rated capacity | 1.0kVA | 3.2kVA | 6.0kVA [4.2kVA] |
11.1kVA |
| Rated primary voltage | AC200V±10% (50/60Hz) | |||
| Non-load secondary voltage *1 | 1.2V/1.8V/2.5V/3.5V | 2.5V/3.2V/4.0V/5.0V | 2.7V [2.2V]/3.4V [2.8V]/ 4.3V [3.6V]/5.3V [4.4V] |
2.6V/4.0V(paralell)/5.3V/ 8.0V(straight) |
| Turn Ratio | 167:1/111:1/80:1/57:1 | 80:1/63:1/50:1/40:1 | 74:1/59:1/47:1/38:1 | 77:1/50:1/38:1/25:1 |
| Maximum output current | 1600A | 3700A | 6600A [5500A] | 8000A |
| Duty factor (@100ms) | 1.5% or below | |||
| Cooling method | Air cooling | Water cooling | ||
| CE marking | - | - | - | －: MT-25 ◯: MT-25A |
| CCC | ○ | － | ○ | ○ |
| Mass | 20kg | 35kg | 52kg | 60kg |
| Dimensions *2 | 193(W)×284(D) ×175(H) |
182.5(W)×358(D) ×197(H) |
228(W)×370(D)×244(H) | 180(W)×370(D)×240(H)：MT-25 180(W)×463(D)×200(H)：MT-25A |
*1: Values at 60 Hz input are indicated in brackets [ ].
*2: Not including projections.
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