Press Attendant
The Press Attendant is a press automation and monitoring package. It combines tonnage monitoring, die
protection, programmable limit switches, brake monitoring, motion detection and more into ONE encoder-based
system. This all-in-one package will help protect your investment and reduce downtime.
The Press Attendant is comprised of two products, the DPPlus and tonnage monitor. The DPPlus controls the
die protection and PLS features, while the tonnage monitor is used to protect your press and die from hard hits.
The DPPlus unit press automation system includes a controller with operator interface,
output relays, die protection inputs, and brake input. The
DPPlus unit offers 8 programmable limit switch (PLS) outputs that can be used to control press
automation equipment such as feeders (feed and pilot release), air blow off, part lubricators and
more. The die protection inputs allow sensors to be fed into the controller to monitor the strip
progression (short and long feeds), part ejection, buckle detection and other events to prevent
crashes. The brake monitor can be used to monitor the stopping performance of the brake each
time it is activated. The system incorporates batch and total counters that can be used to shut the
press down upon reaching the count as well as tool and stroke counters that can be reset. All
settings can be stored in one of 50 jobs.
The tonnage unit is a two channel, compact, inexpensive and simple-to-use tonnage monitor. It
is capable of displaying the load for both sides of the press as well as the total press tonnage.
Both the left and right side displays have a bar graph that visually shows the deviation
from the benchmark tonnage. This allows the operator to easily watch the repeatability of
forming loads.
Features
| Standard | Option | |
| Die protection |  |
|
| Programmable limit switches | |
|
| Time based brake monitor | |
|
| Motion detection | |
|
| Job storage | |
|
| Stroke, batch, tool & total counters | |
|
| Speed compensation & timed outputs | |
|
| 24 VDC power supply for die protection | |
|
| Standard die protection box | |
|
| Clutch/Brake controller | |
|
| Left, right & total tonnage display | |
|
| Deviation from tonnage setup | |
|
| High and low tonnage display | |
|
| Target tonnage indicator lights | |
|
| Time based signature analysis | |
|
| Reverse load display | |
|
| Low alarms may be disabled | |
|
| Automatic zero balance | |
|
| Auto-Set benchmark tonnage | |
|
| RS-485/ 232 serial port | |
|
| PressNet & TT Graph compatible | |
Specifications
| Die Protection | |
| Inputs | 4 |
| Sensor Type | Momentary, maintained, static, scan part, NO or NC |
| Power For Sensors | 24VDC @ 2 Amp power supply |
| Programmable Limit Switches | |
| Outputs | 5 |
| Position Output | Up to 2 on/off windows, speed compensation individually at on/off position |
| Timed Output | 1 to 9,999ms |
| Speed Comp. | Individual speed compensation value for each output |
| Mechanical Relay | NO and NC contacts, 10 AMP @ 250VAC, 10 AMP @ 30VDC |
| Solid State Relay | NO contact, 3 AMP @ 140VAC |
| Tonnage Monitor | |
| Channels | 2 |
| Sensor Inputs | Full bridge strain gauges, 120 to 1,000 ohms, up to (4) 350 ohm sensor inputs |
| 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 at press capacity |
| Inaccuracy | +/-1% of full scale max |
| Non-Linearity | +/-.1% of full scale max |
| Frequency Response |
Every stroke (up to 2 updates per second max) |
| Display Update | Every stroke (up to 2 updates per second max) |
| Resolution | 1 Meg Ohm .1% precision resistor |
| Calibration Shunts | 1 Meg Ohm .1% precision resistor |
| Computer Interface |
RS-485/232, PressNet & TT Graph compatible |
| Motion Detect | |
| Start Time Limit | 125ms, 250ms, 375ms or 500ms |
| Dual Safety Valve Input |
110 VAC |
| General | |
| Power Requirments | 90 Watts max, 85-132VAC @ 50-60Hz OR 170-264VAC @ 50-60Hz |
| Operating Temperature |
0-70 degrees Celsius |
| Width | Height | Depth | |
| Dimensions | 12.5 " | 14.5 " | 6.68 " |
Manual/Downloads
| Name | Format | Link |
| User Manual |  |
Accessories/Related
| Type | Name | Description | Link |
| Standard Product | Die Protection Box | Standard die protection box |  |
| Standard Product | Die Protection Box | Universal sensor interface | |
| Service | Installation | On-site product installation | |
