Zapi EPS-AC, Руководство по эксплуатации и инструкция пользователя, Страница: 38 / 52

Page 38
5) ADJUSTMENT #4
Provides the second phase current gain: it can be acquired or hand adjusted
pushing the right side buttons (factory adjusted).
6) SET BATTERY TYPE
Specify the battery you have through this option. This setting is used for the flux
compensation when the COMPENSATION parameter is set to Level 1 or 2. Note: it
is important that the battery setting must be compatible with the Eps_ac version you
have.
7) SET SAT FREQ
it specifies the limit frequency for the constant flux control law. There are two control
regions. The first works with a constant V/f (flux) value from zero to saturation
frequency. The second works with a constant voltage (Vbatt) for higher than
saturation frequency values (weakening region) .
8) OVERSAT FREQ
The limit frequency for the constant voltage control law (degraded flux and torque)
is set through this adjustment. It provides the increment over saturation frequency
for the constant voltage region (weakening region).
In our open loop steer we suggest that you adjust oversat freq to level 1. A motor
used as power steering infact does not need to work in the weakening region. We
advise against oversat freq = 0 because with this setting the sinusoidal wave shape
at the maximum frequency becomes a square wave increasing the noise.
9) MAXIMUM SLIP
Provides the maximum slip when an optional encoder control is adopted. It is used
also to set the lowest limit to the frequency in a max current limit with a blocked
rotor. (Typical value is 5Hz).