Hitachi S1 Series User Manual

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

Hitachi S1 Series Specifications

General

Output Frequency	0 - 400 Hz
Overload Capacity	150% for 60 seconds
Frequency	50/60 Hz
Control Method	Sensorless Vector Control
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheat, Short Circuit
Communication	RS485, Modbus RTU
Output Voltage	3-Phase 200-240VAC, 3-Phase 380-480VAC (Matches Input Voltage)
Cooling Method	Fan Cooled