7280 TTELEC | Alldatasheet
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Technical content
© TT electronics plc Issue B 09/2015 Page 1 BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. Applications: Pedal position Joystick controls Valve control Wind vane Panel control Test and measurement Medical equipment Angular position Features: Lead-free RoHS 2 compliant 7/8” diameter 10 turn wirewound Model Styles Available 7281 1/8” shaft, 1/4” bushing 7283 1/8” shaft, servo 7284 6 mm shaft, 3/8” bushing 7286 1/4” shaft, 3/8” bushing 7288 (for heavy side load applications) 1/4” shaft, 3/8” bushing Electrical Resistance range 100 to 100K ohms Standard resistance tolerance ±5% Minimum practical resistance tolerance ±1% Independent linearity ±0.25% Minimum practical independent linearity ±0.15% (<300 ohms), ±0.075% (≥300 ohms) Power rating 2.0 Watts at 70°C, derating to 0 at 125°C Dielectric strength 1,000 V rms Insulation resistance 1,000 Megohms minimum Noise 100 ohms maximum Actual electrical travel 3600° +10° -0° (>100 ohms), 3600° +10° -5° (≤100 ohms) End voltage Maximum 0.25% of input voltage Tap tolerance ±3°
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. Precision Potentiometer Issue B 09/2015 Page 2 BI Technologies www.bitechnologies.com | www.ttelectronics.com Mechanical Total mechanical travel 3600° +15° -0° Number of gangs 2 maximum Weight (single gang) 0.75 oz. nominal Backlash 1° maximum Environmental Operating temperature range -40°C to +125°C dynamic, -55°C to +125°C static Temperature cycling 5 cycles, -55°C to +125°C, maximum 5% ∆R Shock 6 ms saw-tooth, 100 G’s, 0.1 ms maximum discontinuity Vibration 15 G’s, 10 to 2,000 Hz, maximum 5% ∆R, 0.1 ms maximum discontinuity Moisture resistance Five 24 hour cycles, maximum 3% ∆R High temperature exposure 1,000 hours at 125°C, maximum 5% ∆R Rotational load life (1 lb side load for 7288) 1M shaft revolutions + 900 hours at 2.0 Watts & 70°C, maximum 5% ∆R Ingress protection rating (IP Code) IP50, IP66 available as option (feature code ES) 7281, 7284, 7286, 7288 7283 Static stop strength 36 oz.-in. Maximum 48 oz.-in. Panel nut tightening torque n/a Maximum 25 lb.-in. Shaft end play 0.005” Maximum 0.010” Shaft radial play Maximum 0.003” 0.002”
Ordering Information
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. Precision Potentiometer Issue B 09/2015 Page 3 BI Technologies www.bitechnologies.com | www.ttelectronics.com Feature Codes 7281, 7283 plain shaft; 7284, 7286, 7288 slotted shaft No code Center tap CT Linearity tape LT Flatted shaft FS Slotted shaft (standard on single cup 7284, 7286 & 7288 without RS feature) SS Rear shaft extension (7281, 7286, 7288 single cup only) RS Shaft lock (7286 & 7288 only) SL High torque 2-6 oz.-in. (7286 & 7288 only) HT Additional gang 2G Gold plated solder lug terminals (see optional terminal configuration) FT Seal (IP66) 7284, 7286, or 7288 only ES When multiple feature codes are used the P/N shall be in the same sequence as listed in this table (top to bottom). Standard Resistance Values Total Resistance (Ohms) Theoretical Resolution (% nominal) Tempco of Wire (ppm/°C) 100 0.059 ±20 200 0.037 ±20 500 0.030 ±20 1K 0.024 ±20 2K 0.020 ±20 5K 0.018 ±20 10K 0.017 ±20 20K 0.016 ±20 50K 0.010 ±20 100K 0.008 ±20 Circuit Diagram Feature Codes 7281: RBJ, 2601, 2641 7286, 7288: RB, 2126, 2606, 2606S, 2607, 2607S, 2626, 2627, 2646, 2646S, 2647, 2647S
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. Precision Potentiometer Issue B 09/2015 Page 4 BI Technologies www.bitechnologies.com | www.ttelectronics.com Outline Drawing
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. Precision Potentiometer Issue B 09/2015 Page 5 BI Technologies www.bitechnologies.com | www.ttelectronics.com Outline Drawing