Series 388MPLC Motorized Potentiometer
Conductive Plastic—1/2" square
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| Description |
| The series 388MPLC Motorized Potentiometer combines a geared motor with up to four potentiometer modules. The motor is coupled by a slip clutch to limit mechanical rotation and to allow manual adjustment.
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| Features: |
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Small Size
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Remote Operation
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Slip Clutch for Manual Operation
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1/2" square Potentiometer
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Gear Motor: 0.63" Diameter
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Cermet equivalents available, see Series 389MPLC
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Electrical Specifications
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Number of Sections
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Up to four modules
target="_blank" (Only two gang units are available from stock)
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Resistance Range
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Linear - 100 ohms to 5 Megohms
Tapered - 500 ohms to 2.0 Megohms
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Resistance Tolerance
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Linear - ±10% to 500K; ±20% over 500K
Tapered - ±10% to 100K; ±20% over 100K
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Independent Linearity
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±5% standard; specials available
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Dynamic Noise (C.R.V.)
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Linear: 1.5% of total R standard
target="_blank" (1.0% available as special)
Tapered: 2.2% of total R
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Static Noise
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20dB up to 30 Kohms
12dB up to 100 Kohms
3dB up to 1 Megohm
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Power Rating
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Bushing mounted: 0.5 watt at 70°C
PC mounted: 0.25 watt at 70°C
Derate to zero watts at 120°C
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Effective Rotation
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265° ±5°
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Mechanical Specifications
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Mechanical Rotation
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295° ±5°
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Stop Torque
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4 in-lb target="_blank" (0.45 Nm) maximum
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Bushing
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1/4 in target="_blank" (6.35mm) x 1/4-32 NEF - Standard
3/8 in target="_blank" (9.53mm) x 3/8-32 NEF - Special
Various lengths available
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Shaft
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Standard: 1/8 in target="_blank" (3.18mm) x 3/4 in target="_blank" (19.05mm) FMS Slotted
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| Motor and Gear Train Specifications |
Gear Ratio
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120.4
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Torque
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2 Pot Sections - 0.3 to 3.5 oz.-in.
3 Pot Sections - 0.5 to 4.5 oz.-in.
4 Pot Sections - 0.5 to 5.5 oz.-in.
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Direction of Rotation
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ClockWise - Viewed from pot shaft end when motor (+) terminal connected to positive terminal of 12 volt supply
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No-Load Current
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28 ma - Gear Motor Only
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Torque Constant
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0.072 oz.-in./ma - Gear Motor Only
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Speed Constant
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4.0 RPM/ma - Gear Motor Only
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Stall Current
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250 ma
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Voltage
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12 VDC
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Weight
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0.86 oz. Gear Motor Only
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Operating Temperature
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-30°C to 65°C
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Life
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500 hours
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