PW Plus Benchmark Tonnage Monitor
The PressWatch PW PLUS Series is the most advanced benchmark tonnage monitor in the industry
today. Sophisticated electronic circuitry makes the monitor extremely easy to understand and use.
One operator switch controls the monitor and operating instructions are printed near control.
The PW PLUS production monitors are used for many important operations, such as: automatic,
progressive dies and basic stamping. It is available as a two or four channel unit for easy
plant standardization.
Features
| Standard | Option | |
| Two or four channel display, plus total |  |
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| Displays tonnage & deviation from benchmark |
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| Percent of benchmark & percent of capacity setpoints |
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| Parts counter counts all parts within the tonnage limits |
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| Displays reverse load or snap-through | |
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| Can view overload counts with PressNet | |
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| Automatic setpoints based on benchmark tonnage |
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| Capacity and working tonnage alarms | |
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| Low alarms may be disabled | |
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| Can display calibration numbers | |
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| Independent left and right, high & low set points |
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| Automatic Zero Balance | |
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| Drift controls limit excessive load deviation from hit to hit |
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| Set gradual trending limits based on tonnage variances |
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| Press overload protection at all times | |
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| Helps identify off-center tool loading | |
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| Two or four sensor inputs | |
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| Analog output jacks | |
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| RS-485/232 serial port | |
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| AutoLearn | |
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| AutoSet keyswitch | |
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| Door lock | |
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| Flushmount Kit | |
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| Auto Target Tonnage Recall | |
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| Forging anti-noise | |
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| Time based signatures | |
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| Pressroom networking | |
Specifications
| No. Of Channels | Two or Four |
| Sensor Inputs | Full bridge strain gauge sensors 120 to 1000 ohms Up to (4) 350 ohm sensors |
| Sensor Excitation | Built-in 10VDC @ 125mA max (Short circuit protected) |
| Balance Range | +/- 1mV/V of offset |
| Gain Range | Low Gain = 0.568mV/V to 5.000mV/V High Gain = 0.057mV/V to 0.625mV/V |
| Analog Output | .25" stereo phono jack 2.5VDC @ Press Capacity |
| Accuracy | +/- 1% of full scale max |
| Non-linearity | +/- .1% of full scale max |
| Frequency Response |
Flat DC to 1KHz |
| Display | 4 digit display |
| Display Update | Every Stroke (up to 2 updates per second max) |
| Resolution | 1024 count |
| SPM | 400 SPM (threshold trigger) 2000 SPM (probe trigger) |
| Calibration Shunts | 1 Meg Ohm .1% precision resistor |
| Computer Interface |
RS-485 |
| Trigger | Probe or Threshold |
| Threshold Probe | Built-in voltage source (24VDC @ 50mA max) provides power for NPN or PNP proximity probes. Also supports limit switch, solid state or mechanical relays |
| Resolver Interface | No |
| Shutdown Relay | 10A @ 120VAC N.O. and N.C. Contact Bypass switch available |
| Power Req. | 58 Watts max, 95-130VAC @ 50-60Hz OR 190-260VAC @ 50-60Hz |
| Operating Temp. | 0-70 degrees Celsius |
| Weight | Approximately 22.3lbs |
| Width | Height | Depth | |
| Dimensions | 12.5 " | 14.5 " | 6.8 " |
Manual/Downloads
| Name | Format | Link |
| User Manual |  |
Accessories/Related
| Type | Name | Description | Link |
| Standard Product | PM Kit | PM Kit includes strain gauge sensors, cables and mounting hardware |
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| Standard Product | PressNet | Networking software that provides detailed production and tonnage information |
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| Standard Product | TT-Graph | Signature analysis program that generates tonnage signatures and provides a simple approach for analyzing the signatures |
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| Service | Installation | On-site product installation | |
