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N123-137 Series Snap Trac Ramp Generator Gen Purpose Amplifier

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N123-137 Series Snap Trac Ramp Generator and General Purpose Amplifier SPECIFICATIONS Ramp Generator Inputs: ±12 VDC maximum at terminal 4. 0 to -15.0 VDC at terminal 1. 0 to +15.0 VDC at terminal 3. Outputs: Steady state output at terminal 6. R5 e6 = ––––––-– R4 + R5 e4 VDC ( ) Load resistance ≥5KΩ. ±10 VDC maximum output. Slope of output: External Control of Ramp Rate: For positive slope: J1 = “EXT”. Rate controlled by e1 (-E Va, however,A1D goes into Pos (+) Saturation. At the same time,A1C is comparing the input voltage (VIN) to the ‘negative’ switchover voltage (Vb). If VIN is < Vb, then A1C will be in NEG (-) Saturation. (Vb more ‘negative’ than VIN). On the other hand, if VIN is > Vb (VIN more ‘negative’ than Vb), the output of A1C will be in POS (+) Saturation. Diodes D1 and D2 provide a voltage limiting network.A1D and diode D1 handle ‘positive’ input signals, while A1C and diode D2 are set-up to deal with ‘negative’ input signals. MODEL N123-137 RAMP GENERATOR – FLOW +E COMPARATOR WINDOW RESULTS -SLOPE A1D A1A 4 Vin 6 Vo D1 Va C3 Vo' -E Vb D2 A1C +SLOPE R9 A1B CLOSED-LOOP CONTROL OF A HYDROSTATIC DRIVE WITH LIMITED ACCELERATION AND VELOCITY FEEDBACK Model N123-140 Frequency to Voltage Converter can be used to process signals from a bi-directional magnetic pulse pick-up for velocity feedback from a variable displacement pump and fixed displacement motor. Magnetic pulse pick-ups are often used in rugged harsh environments such as used in off-road vehicles.A DC/DC converter can be used to supply the required 3-wire, ±15 VDC regulated power source from a power supply such as a ‘battery’. Model N123-137 Ramp Generator Card provides necessary acceleration/deceleration control in velocity feedback control. -SLOPE 7 VELOCITY COMMAND MODEL N123-137 RAMP GENERATOR (Snap-Trac Card) +E 7 (+) +E 4 D1 9 C3 8 -E -E 9 (-) D2 R9 6 +SLOPE 16 MODEL N122-142A SERVOAMPLIFIER (Snap-Trac Card) +E +V +E 17 18 16 BATTERY +15VDC REG + 17 PWR COMMON -E 18 -15VDC REG -V 19 -E DC/DC CONVERTER - R9 SCALE CMD or FBK LOOP GAIN-1 SUM 15 3 CMD or FBK Input (to +/-120VDC) DRIVER R4 12 A1A A1B A2B 13 +E R34 Current Limit A2C R46 10 (TP - Test Point) TP11 R8 Inner-Loop Input 4 Error-Output Monitoring 11 Signal Ground (Monitor) 5 Signal Ground 2 Feedback Input (to +/-15VDC) FBK INPUT R7 CMD INPUT Model 63-500 Pump Controller Bi-Directional Magnetic Pulse Pick-Up 1 Drive Shaft Variable Displacement Pump Fixed Displacement Motor Load Drive MODEL N123-140 F-V CONVERTER BATTERY +12VDC 7 3 -E + - SPAN 2 1 +E K1 4 K1 F 5 V 6 Industrial Controls Division Moog Inc., East Aurora, NY 14052-0018 Telephone: 716/655-3000 Fax: 716/655-1803 Toll Free: 1-800-272-MOOG CDL6172 Rev B 500-198 798