M1020 PROGRAMMABLE LIMIT SWITCH THE SIMPLE, LOW-COST REPLACEMENT FOR CAM/LIMIT SWITCHES uProgrammable Limit Switch (PLS) at the cost of cam/limit switches uDetachable operator interface for program security uIncreased machine productivity uProgrammable production rate counters uFine tuning in motion uProgrammable zero offset M1020-PLS AVG Automation, your Programmable Limit Switch (PLS) mounted on the machine shaft, simply align the machine to a specialist, has now made it possible to simply obsolete electro- mechanical zero reference and enter the required offset num- mechanical cam/limit switches! In spite of numerous limitations, ber to read zero. such as cam bounce, limited life, and high maintenance, Programmable Limit Settings industrial use of electromechanical switches has continued due The "ON/OFF" setpoints for each output can be programmed to their low cost. The M1020-PLS from AVG Automation has simply by the touch of a key from the front panel. The AVG broken down the last barrier…the price. It offers solid-state reli- Automation patented key sequence in the M1020-PLS is ability at the cost of electromechanical cam switches. incredibly simple and easy to use. Principle of Operation Fine-Tuning in Motion The M1020-PLS consists of two parts, one being a position An additional advantage of the M1020-PLS is that you can transducer (resolver) mounted on the machine shaft and the fine-tune your limit settings while the machine is running. other a programmable unit mounted in the machine control This increase in machine productivity pays for the PLS within panel. The resolver produces an analog signal proportional to months. the shaft position that is converted to digital format by a ratio- metric converter inside the programmable unit. This position Programmable Production Rate Indicator is then displayed on the front of the PLS panel and compared In the "TACH" mode, the M1020-PLS displays the machine to the dwell setpoints programmed into it. When the process shaft speed in RPM. However, in this mode, a production rate cycle reaches these setpoints, outputs are enabled or disabled, factor can be programmed to display parts manufactured per resulting in starting or stopping desired functions during the minute. cycle. Programmable Zero Offset Key selects the function to be programmed, while MODE The M1020-PLS allows for quick initial setup, while matching the display shows each function's current values. "machine zero" to "resolver zero" or compensating for Key selects the parameter to be programmed, while machine-wear-induced speed changes. After the resolver is the location of the decimal points indicates which parameter is selected. 800-TEC-ENGR Programmable Limit Switches D-13 www.avg.net SECTION D Keys adjust the parameter value, Program Enable Input DEC INC while the display indicates all The M1020-PLS allows another level of security against unau- current parameter values. thorized programming changes. In addition to the detachable programmer, you need a contact closure at the back of the Key selects the next programmed setpoint RECALL M1020 to enable programming. for the display. Rugged, Reliable for Hostile Environments The M1020-PLS combines the ruggedness of a brushless MODULAR,EASY TO SERVICE resolver and the reliability of an advanced solid-state control. The rugged, heavy-duty, NEMA 13 (IP54)-rated resolver can Low Maintenance be mounted on a machine shaft in hostile environments, such Unlike an electromechanical limit switch that requires periodic as mechanical shock, vibration, extreme humidity and temper- maintenance and often at places that are hard to reach, the ature changes, oil mist, coolant sprays, solvents, etc., and the M1020-PLS requires no maintenance and has no mechanical programmable control unit, M1020-PLS, can be mounted up cams/contacts to wear out. In addition, the plug-in output to 2,500 ft. away in a control panel The splash-proof, oil-tight relays are easily field replaceable. front plate permits the unit to be installed directly on the machine itself, if so required. The ratiometric converter used in the M1020-PLS assures high noise immunity and short-cir- cuit-proof resolver wiring. Fully Absolute Position Unlike some other attempts to replace cam switches with incremental encoders, and/or counter modules in a PLC, the M1020-PLS maintains one crucial feature of cam switches…it is totally absolute. The M1020-PLS will give you reliable limit settings, irrespective of power outages, machine movement during a power outage, as well as during severe electrical noise! Detachable operator interface for Program A PLS AT THE COST OF CAM/LIMIT Security and Cost Savings SWITCHES ($500)* Once the setpoints are programmed using the front-panel-pro- An innovative design and AVG Automation's fully automated gramming interface, you can detach it from the main unit, 100,000 sq.ft. manufacturing facility with the latest in state- making the program inaccessible to any unauthorized person- of-the-art surface-mount equipment, have now made it possi- nel. While this feature makes the M1020-PLS tamper-proof, it ble to provide you with a programmable electronic cam/limit also saves you money by using the same programmer to pro- switch at the cost of electromechanical cam/limit switches. At gram various other AVG Automation PLSs in your plant. less than $500.00 for eight cam outputs, the M1020-PLS offers all the advantages of a solid-state programmable device with the same degree of product reliability as any other AVG Autotech PLS, and yet at no penalty cost. * OEM Quantities 800-TEC-ENGR Programmable Limit Switches D-14 www.avg.net M1020 PLS SPECIFICATIONS GENERAL: CONTROL INPUT: Power Requirements: AC Power: 105-135 VAC, 60Hz, 45W Program Enable: Needs to be tied to common (common pin is provided) to Operating Temperature: -10 °F to +130 °F (-23 °C to +55 °C) enable programming. Programming is disabled if this input is System Resolution: 10 Bits left open. Scale Factor: Fixed, 359 Types of Outputs: Offset: Programmable, 0 to 359 8 PLS outputs, activated according to the user-entered Scan Time: Setpoint Dependant (430 µs max.) setpoints (1 setpoint per channel). The available output types Position Signal: AVG Automation's Series RL100, E7R, E8R, or are: RL101 resolvers Electromechanical SPST relay: Cable Length Between Resolver and M1020: 2500 ft. (762 m) 10 A, resistive, continuous @ 120 VAC shielded Solid-state relays: Resolver-to-Digital Decoder Tracking Speed: 380 RPM with 1° 1. AC output: 120 VAC @ 3 A Resolution ON time: < 3 ms after zero cross OFF time: At zero cross Leakage: 2.1 mA @ 120 VAC 2. DC output: Up to 60 VDC @ 3 A ON time: 5 µs OFF time: 35 µs Leakage: 0.29 mA @ 15 VDC 3. DC output: Up to 200 VDC @ 1 A ON time: 15 µs OFF time: 100 µs Leakage: < 0.01 mA @ 30 VDC Panel Cutout 800-TEC-ENGR Programmable Limit Switches D-15 www.avg.net SECTION D