Operating instructions

6 Commissioning Issue 10/06
MICROMASTER 430
48 Operating Instructions (Compact)
6.3.16.6 Vdc controller
Configuration of Vdc controller
Enables / disables Vdc controller.
0 Vdc controller disabled
1 Vdc-max controller enabled
P1254 =...
Auto detect Vdc switch-on levels
Enables/disables auto-detection of switch-on
levels for Vdc control functionalities.
0 Disabled
1 Enabled
t
t
⏐f⏐
1
-controller active
V
DC_max
t
V
DC
0
r0056 Bit14
r1242
A0911
f
f
act
set
6.3.16.7 Bypass
Bypass is used to described the condition when a motor is ran alternatively
between a mains supply and the inverter. For example, the bypass circuit can be
used to switch over from the inverter to a mains supply when the inverter is faulty.
This function can also be used to ramp-up a large rotation mass using the inverter
and then, at the correct speed, switching over to the mains supply.
Bypass control
Selects the possible sources for contactor changeover control.
0 Bypass disabled
1 Controlled by inverter trip
2 Controlled by P1266
3 Controlled by P1266 or inverter trip
4 Controlled by act. frequency = P1265
5 Controlled by act. frequency = P1265 or inverter trip
6 Controlled by act. frequency = P1265 or P1266
7 Controlled by act. frequency = P1265 or P1266 or inverter trip
NOTE
Flying start P1200 should be enabled in cases where the motor may still be turning after
switch-over from bypass-mode to inverter-mode.
Mains
Mechanical
interlock
Relay outputs
Contactors
1
1
P1240 =...
0
P1260 = ...