N269 Process Control Tonnage Monitor
The N269 process control monitor provides advanced information and control for refractory, powdered
metal and compaction presses. It is far more comprehensive than a typical tonnage monitor. It can improve
product quality, reduce scrap and increase profits while protecting against machine overload. Help solve
quality control and size variations with the N269. Plus, continuously check job status to forecast
completion and measure press performance against established standards (you can set).
The N269 controls the variable fill on the basis of peak load. It uses one or two strain gages to
determine the peak load on each press cycle and responds by operating the appropriate relay. Five
relays are used: four control the process and the fifth can stop the press. Four setpoints establish
the five zones.
Four control setpoints establish a "quality window" that assures acceptable parts are being made. It
has five zone counters (high reject, good-decrease fill, good, good-increase fill, low reject), four
relay counters (reject, good, decrease fill, increase fill) and up to six alarm counters.
Features
| Standard | Option | |
| Automatically operates fill relays |  |
|
| Displays high setpoints | |
|
| Shows low setpoints | |
|
| Displays tonnage changes | |
|
| Identifies out-of-tolerance hits | |
|
| Shows batch size | |
|
| Displays balance of the batch counter | |
|
| Shows number of pieces produced | |
|
| Displays strokes-per-minute | |
|
| Gives last high/low alarm tonnage | |
|
| Shows tonnage highs/lows over time | |
|
| Automatic Zero Balance | |
|
| Gives time lapse since last hit | |
|
| Press overload protection | |
|
| Standard computer interface | |
|
| Door Lock | |
|
| Flushmount | |
Specifications
| No. Of Channels | One or Two |
| Sensor Inputs | Full bridge strain gauge sensors 120 to 1000 ohms Up to (2) 350 ohm sensors |
| Sensor Excitation | Built-in 10VDC @ 475mA 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 | .025" header 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 | 2 updates per second |
| Resolution | 1024 count |
| SPM | 300 SPM (threshold trigger) 800 SPM (probe trigger) |
| Calibration Shunts | 1 Meg Ohm .1% precision resistor |
| Computer Interface |
(2)RS-485 |
| Trigger | Probe or Threshold |
| Thershold Probe | Accept 24-115V AC or DC (Built-in voltage source of 115VAC) It supports limit switch, solid state or mechanical relays |
| Resolver Interface | No |
| Shutdown Relay | 10A @ 120VAC N.O. Contact Bypass switch available |
| Power Req. | 69 Watts max, 95-130VAC @ 50-60Hz OR 190-260VAC @ 50-60Hz |
| Operating Temp. | 0-70 degrees Celsius |
| Weight | Approximately 25.8lbs |
| 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 | PressNet | Networking software that provides detailed production and tonnage information |
 |
| Standard Product | TT-Graph | Signature analysis program that generates tonnage signatures and provides a simple approach for analyzing the signatures |
|
| Service | Installation | On-site product installation | |
