MTT MS3782 Slim Plug-In PWM Converter

The MTT MS3782 Slim Plug-In PWM Converter takes a DC current or voltage input and converts it into a pulse-width-modulated output signal whose duty cycle tracks the input level, giving panel builders a way to drive equipment that expects a PWM control signal from a standard analog process reading. This makes it a useful bridge between analog instrumentation, such as a 4-20mA transmitter, and devices like variable-speed drives, dimmers, or actuators that are controlled by duty cycle rather than a straight analog level.

The output can be configured as a TTL-level, open-collector, or voltage pulse signal, and both the switching frequency and the duty-cycle range are adjustable to match the receiving equipment. Front-accessible trimmers allow zero and span to be adjusted on site, and four-way galvanic isolation between input, output, and power keeps the PWM signal clean and protected from noise and ground loops as it travels to its destination.

Input RangesCurrent -100 to 100mA (100µA-200mA span); voltage -10 to 10V (200mV-20V span)
Input Resistance1MΩ min. (voltage); 10Ω-250Ω (current, varies by range)
Max Allowable Input40mA DC max (current model); 30V DC max (voltage model)
Output SignalPWM with adjustable duty cycle (80% to 0%); TTL level, open collector, or voltage pulse (10V or 12V)
Max Output LoadTTL 10mA @3.5V; voltage pulse 7-15mA; open collector 100mA @30V
Frequency Range10Hz to 1kHz (user-specified ±30%)
Adjustment±5% of span, zero and span, via front trimmers
AccuracyBetter than ±1.5% of span (at 25°C±5°C); ±0.2% per 10°C temperature effect
Response Time1s max (0-90%)
Isolation4-way isolation between input, output, power, and ground; 100MΩ min. insulation resistance @500V DC; 2000V AC dielectric strength for 1 minute
Power Supply100-240V AC (85-264V, 50-60Hz), 24V DC ±10%, or 100-240V DC (85-264V); 6-6.5VA (AC) / 1.8-2.0W (24V DC) / 2.0-2.5W (100-240V DC)
DimensionsW29 x H86 x D125mm
Weight120g (main unit) / 80g (socket) max
TerminalsM3.5 screw terminals, 0.8-1.0 Nm torque, drop-out prevention screws
MountingWall or DIN rail mount
Operating Conditions-5 to 55°C, 5-90% RH non-condensing
Storage Temperature-10 to 60°C

Download MTT MS3782 Slim Plug-In PWM Converter information here

Datasheet: MTT_SpecSheet_MS3782_Rev10_E

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