R7232A Proportional Indicating Controller

Transcription

1 SRITION R73 roportional Indicating ontroller LN Issued: March 199 The R73 ontroller provides a means of converting a remote position sensor signal into a suitable output signal to drive a servovalve such as the anfoss MV103/113. Typical sensors include the S104 Rotary osition Sensor for grade or steering control applications and the KS1001 Level Sensor for slope control applications. When used with mobile equipment, the sensor detects the equipment s deviation in position with respect to a reference. The R73 ontroller converts the deviation information into a pulse-width-modulated proportional output to command a two-wire servovalve. The servovalve moves a final drive element the proper direction and distance, eliminating the error signal. The R73 is designed to be mounted in a panel. gain adjustment, a RUN/STNY switch, a JOG switch and a continuous display deviation meter are on the ontroller s front panel for operator convenience. TURS Versatile - Models available with either MS or terminal strip connectors. eviation Meter - Zero center meter shows direction and amount of servovalve drive. Resists vibration. Reverse polarity protection. Short circuit protection. Manual Override - JOG switch provides manual commands to the servovalve. RUN/STNY Switch. Moisture rotection - ircuit board components coated to guard against corrosion. ORRING INORMTION SIY 1. Model number R (MS onnector). Model number R73108 (Terminal Strip).. Sensors; KS1001 or S Valves; MV103/ Slope Set Unit; MQ Mating cables and connectors needed. MTING ONNTORS 1. Mating MS connector to the Sensor connector (6 pin) - endix Type Number MS S-6S, straight; anfoss art Number K Mating MS connector to the Remote Setpoint onnector (5 pin) - endix Type Number MS S-8S, straight; anfoss art Number K Mating MS connector to the power and output connector (10 pin) - endix Type Number MS S, straight; anfoss art Number K anfoss, LN

2 THNIL T INUT SULY VOLTG 11 to 15 Volts dc OWR ONSUMTION ependent on load, 4.5 watts maximum at 1 Volts dc. INUT IMN TO H RIG MOUL- TOR 0 kilohms minimum MXIMUM INUT TO H RIG MOULTOR 58 Volts peak to peak MXIMUM IRNTIL INUT 10 Volts peak to peak as seen at the ontroller gain adjustment. OUTUT OWR OUTUT 0 to 5.8 ± 0.4 Volts dc at 1 Volts dc supply voltage. requency of pulse width modulation is 440 ± 40 Hz. OLRITY n input error signal provides a higher voltage from Terminals to than from Terminals to on the sensor connector. The result is counterclockwise meter deviation and a positive average output of power connector Terminal with respect to. TRNSUR XITTION Square wave at a frequency of 440 ± 40 Hz. Nominal amplitude into a slope sensor (10 ohm load) is 1.7 Volts peak to peak, 1.4 Volts ac as read on a volt-ohmmeter. Nominal amplitude into a grade sensor (5 ohm load) is 1.0 Volts peak to peak, 0.7 Volts ac as read on a voltohmmeter. ONTROL RUN/STNY SWITH Located on the front panel. In the RUN position, the output is proportional to the sensor error signal. In the STNY position, the output of the R73 is switched off. JOG SWITH Located on the front panel. Spring return to open center position. NOT: The JOG switch overrides the sensor signal and provides manual operation of the valve regardless of the RUN/STNY switch position. MTR Located on the front panel. isplays output of the ontroller. The output may or may not be connected to the load, depending upon the RUN/STNY switch position. With the switch in the STNY position, the meter will continue to indicate errors generated by the sensor. Scale - Zero drive is at midscale. Needle in the red indicates output greater than 3 Volts dc. GIN The gain potentiometer is located on the front panel and is field adjustable. 50 millivolt dc error signal across the gain potentiometer () when the potentiometer is in full clockwise position will give 5.8 ± 0.4 Volts dc to the load. lockwise rotation increases gain. Shaft rotation is 70. If the gain potentiometer is rotated counterclockwise to its stop, the ontrollers will be turned O. ONNTION IGRM NIX TY NO. MS31016S-8 ONNTOR (NOSS RT NO. K0399) S104 OR KS1001 SNSOR S N S O R S T O IN T 1 NL MOUNT RMOT STOINT Q TO 15Vdc INUT - O W R O UT U T V7059 MOIL QUIMNT SRVOVLV WIRING ROM TO IS N ONLY WHR TH RMOT STOINT IS QUI WITH OLL-O IRUIT Wiring onnections to the R73 Terminal Strips I HN-HL RMOT STOINT Q65 IS US, ONNT TH MLIIR TO NIX TY NO. MS31016S-8,,,,, TO,,, RSTIVLY N MOUNT ON TH NL. 358 LN

3 OK IGRM OSILLTOR 440 Hz R73 ROORTIONL INITING ONTROLLR ROTRY OSITION, LVL OR LVT SNSOR RIG IRUIT ONTROLLR OWR RIV RUN/ STNY SWITHS & JOG S104 OR KS1001 GIN MV103/113 SRVOVLV RMOT STOINT OR STRING K MQ THORY O ORTION Refer to the lock iagram. ower is obtained from the equipment s 1 volt system. our basic sections comprise the internal circuitry of the R73. They are as follows: 1. OSILLTOR The oscillator provides sensor excitation. In addition, the oscillator supplies an input to the mplifier, setting the frequency of the output.. RIG The bridge accepts the floating signals from the single external sensor and rectifies the signals. The signal is split with a fixed voltage divider within the total bridge network. The difference, or error signal, is supplied to the mplifier. In slope control applications, a Remote Setpoint (Q65) is connected across the fixed voltage divider. hanging the setpoint of the Q65 changes the bridge ratio and calls for a new null point for the sensor. 3. SNSOR The error signal from the bridge is summed with the 440 Hz signal from the oscillator to form the mplifier input. The mplifier is affected by three adjustments: an internal balance potentiometer, an internal range potentiometer and an external gain potentiometer. The output of the mplifier operates the power drive. 4. OWR RIV The mplifier output goes to the power drive operating servovalve as a pulse width system. The output signal provides both dither and power to the load at a rate of 440 Hz. With zero bridge error signal, the drive in each direction will be equal, resulting in no net power delivered to the final drive element. With the introduction of a bridge error signal, the drive in one direction will be longer than the other resulting in net power delivered to the final drive element. LN

4 IMNSIONS, MS ONNTORS 71 imensions and anel utout Size of the R73 With MS onnectors in Millimeters (Inches). IMNSIONS, TRMINL STRIS 9 imensions and anel utout Size of the R73 With Terminal Strips in Millimeters (Inches). LN

5 USTOMR SRVI NORTH MRI ORR ROM anfoss (US) ompany ustomer Service epartment 3500 nnapolis Lane North Minneapolis, Minnesota hone: (763) ax: (763) VI RIR URO ORR ROM anfoss (Neumünster) GmbH & o. Order ntry epartment Krokamp 35 ostfach Neumünster Germany hone: ax: or devices in need of repair or evaluation, include a description of the problem and what work you believe needs to be done, along with your name, address and telephone number. RTURN TO anfoss (US) ompany Return Goods epartment 3500 nnapolis Lane North Minneapolis, Minnesota LN