Yaskawa iQpump Controller Programming Manual Instrukcja Użytkownika Pobierz pdf (Strona 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

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 301 302

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Yaskawa iQpump Controller Programming Manual Instrukcja Użytkownika Strona 26