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s4 series
STANDARD DUTY / HEAVY DUTY
Standard Low Voltage Drive Products
NEMA 4X Washdown / NEMA 12 Sensorless Vector Drives
Highlights:
The S4 Series is a line of high performance NEMA 4X washdown /
NEMA 12 variable frequency drives. Benshaw’s S4 variable frequency
drives are built to withstand the harshest environments and hold up
under your most demanding pressure washing applications. All S4
Series drives combine a simple user interface with an array of features
and are suited to almost any indoor environment.
S4 variable frequency drives come standard with over 180 configu-
rable parameters to match specific application and interface require-
ments.
A standard dynamic braking transistor and resistor are also included
for regenerative applications.
Standard Features:
• NEMA 4X IP66 washdown
enclosure*
• Standard I/O: 10 digital inputs,
2 analog inputs, 2 analog outputs,
2 relay outputs, 2 open collector
outputs, 1 pulsed output
• Digital metering: Output current,
output voltage, power, MWh meter,
run time, power on time, bus
voltage, output frequency, and more
• Communications:
ModBus RTU (standard)
• Voltage tolerance: ±10%
RATINGS
Constant Torque:
1 HP @ 115 V
1–20 HP @ 230 V
1–200 HP @ 460 / 600 V
Key Advantages:
• NEMA 4X IP66 washdown duty
enclosure*
• Standard braking transistor and
resistor
• Sensorless vector control
• Standard and Heavy Duty ratings
• LCD plain English display
• Simple, easy-to-use interface
• Standard ModBus communication
port
• Integral PI control
• Control methods: V/Hz, sensorless
vector, slip compensation
• V/Hz pattern: Linear, fan and
pump, 2-step
• Analog output functions:
1 at 0 – 10 Vdc, 1 at 0 /4-20 mA.
Configurable to motor speed,
output current, output voltage, DC
link voltage, output power, output
torque, PID
• Analog inputs: 0 – 10 Vdc, 0/4-20
mA, –10 Vdc to 10 Vdc, pulse train
input
• Relay outputs: Running, forward,
reverse, ready, faulted, at speed,
keypad control, adjustable torque
levels, adjustable current levels,
PID limits, loss of reference, timers
• Digital inputs: 10 digital inputs.
configurable to run, preset speeds,
jogging, PID disable, fault reset,
drive enable, timers, motorized pot,
and more
• User interface: 2 line LCD display,
16 characters per line
• Braking functions: Decel, coast,
DC injection, dynamic braking
(internal IGBT and resistor)
* Units 1–100 HP are NEMA 4X.
Units 125–200 HP are NEMA 12.
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