Hitachi S1 Series Basic Manual page 15

S1 series standard inverter
Function description
Output power (kW)
Output frequency (Hz) 0–400Hz
Speed regulation ratio
Speed control precision ± 0.2% (SVC)
Speed fluctuation
Torque response
Technical
Torque control precision ± 10% (SVC)
control
performance
Overload capacity
Frequency setup mode
Automatic voltage
Running regulation function
control
performance
Fault protection function
Speed tracking restart
Terminal analog input
Terminal digital input
Peripheral
interface
Control mode
Motor type
Starting torque
function
resolution
resolution
Analog input
Refer to Rated value
V/F control, SVC
Asynchronous motor
Asynchronous motor 1: 100 (SVC); models <4kW
Asynchronous motor 1: 200 (SVC); models ≥4kW
± 0.3% (SVC)
<20ms (SVC)
Asynchronous motor: 0.25Hz/150% (SVC)
ND:
150% of rated current: 1min
180% of rated current: 10s
200% of rated current: 1s
LD:
120% of rated current: 1min
150% of rated current: 10s
180% of rated current: 1s
Digital, analog, pulse frequency, multi-step speed
running, PID, Modbus communication
Realize switch-over between the set combination and the
set channel
Keep the output voltage constant when grid voltage
changes
Fault protection function
Provide over 30 kinds of fault protection functions:
overcurrent, overvoltage, undervoltage,
over-temperature, phase loss and overload, etc
Realize impact-free starting of the motor in rotating
Note: This function is available for 4kW and above
models
No more than 20mV
No more than 2ms
2 inputs
AI2: 0–10V/0–20mA; AI3: -10–10V; models <4kW
AI1: 0–10V/0–20mA; AI2: -10–10V; models ≥4kW
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Specification