LS Series Signature Based Tonnage Monitor
The PressWatch LS (Load Signature) Series is one of the most advanced and complete production monitors
on the market today. The LS Series provides tonnage and signature features that help ensure press, die and
part protection.
The operator interface is a computer screen that provides color signatures to be displayed right at the press.
Enveloping and Critical Curve monitoring (CCM) are part of the standard signature software.
We also provide a solution if you are interested in combining die protection and programmable limit switches
(PLS) with your LS Series tonnage monitor.
Tonnage
Tonnage Alarm
Signature
Setpoints
Features
| Standard | Option | |
| Two or four channel display, plus total |  |
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| Six or eight channel display, plus total | |
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| Independent left/right, high/low limits | |
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| Signatures for each press corner & total | |
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| Critical Curve monitoring (CCM) | |
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| Signature enveloping | |
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| Five signature zones for enveloping | |
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| Percent of benchmark setpoints | |
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| Percent of capacity setpoints | |
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| Shows reverse load or snap-through | |
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| Stroke, part, good part & batch counters |
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| Can view count left in batch | |
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| Low alarms may be disabled | |
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| Automatic Zero Balance | |
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| Shows die/job summary information | |
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| Target tonnage die storage, up to 200 jobs |
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| Three password levels | |
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| Shows strokes per minute | |
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| Can bypass an individual corner | |
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| Flash card for memory & data transfer | |
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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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| Auto-Learn | |
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| Door Lock | |
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| Counterbalance control | |
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| Shut-height indicator | |
Specifications
| No. Of Channels | Two, Four or Eight |
| Sensor Inputs | Full bridge strain gauge sensors 120 to 1000 ohms Up to (8) 350 ohm sensors |
| Sensor Excitation | Built-in 10VDC @ 500mA max (Short circuit protected) |
| Balance Range | +/- 1mV/V of offset |
| Gain Range | 100 to 11,000x (digitally controlled) |
| Analog Output | 1.25VDC at 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 |
| Resolution | 1024 count |
| SPM | 400 SPM resolver |
| Computer Interface |
(3)RS-485/232 |
| Trigger | Resolver |
| Threshold Probe | N/A |
| Resolver Interface | Yes, 5000Hz rotor resolver |
| Shutdown Relay | 10A @ 250VAC & 30VDC N.O. and N.C. Contacts |
| Power Req. | 70 Watts max, 85-132VAC @ 50-60Hz OR 170-264VAC @ 50-60Hz |
| 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 |
 |
| Standard Product | Resolver | Precise crank-angle position measurements |
|
| 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 | |
