Yaskawa iQpump Controller Programming Manual - Manual (Page 26)

26 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
Figure 1.19
Figure 19. DC Injection Braking During Starting and Stopping
Parameter b2-04 also serves the function of affecting the length of time DC Injection to stop (b1-03 = “2: DC Injection to Stop”) will
occur.
◆ b2-09 Motor Pre-Heat Current
Setting Range: 0 ~ 100%
Factory Default: 0%
A DC current can be circulated within the motor windings while the motor is stopped. The current will produce heat within the motor and
prevent condensation. Parameter b2-09 determines the percentage of the iQpump drive rated output current that will be used for the motor
pre-heat function. This function can be useful in applications where the motor sits for extended periods of time in humid conditions.
Motor pre-heating can only be initiated by closing a digital input programmed as a Motor Pre-heat Input (H1-0x = 60). Check with the
motor manufacturer to determine the maximum acceptable current level the motor can withstand when stopped. Be sure not to exceed the
motor manufacturers recommended level.
Output Frequency
DC injection
b2-03 b2-04