Santerno Sinus M, User Manual, Page: 142 / 219

10-42
10.21 2 Phase PWM
Group Display Parameter Name Setting Range Default Unit
Function Group
2 H48 PWM controlling mode
0: NORMAL PWM
1: 2 phase PWM 1 0 ~ 1 0

Heat loss and leakage current from inverter can be reduced when H48 is set to 1(2 phase PWM)
according to the load ratio.
10.22 Cooling fan control
Group Display Parameter Name Setting Range Default Unit
Function
group 2
H77 [Cooling fan control] 1
0 ~ 1 0

Control the On/ Off of the heatsink cooling fan.

When it is set to 0:
-. Cooling fan begins to operate when power is ON.
-. Cooling fan is stopped when inverter main circuit voltage becomes low due to power off.

When it is set to 1:
-. Cooling fan begins to operate when power is turned ON with RUN command ON.
-. Cooling fan is stopped when RUN command is Off and when the deceleration ramp is end.
-. Cooling fan keeps operating when heatsink temperature exceeds a certain limit regardless
of RUN command.
-. Used when frequent Run/Stop or long time stop is required. This may make the cooling fan
life longer.