Rockwell Automation FlexPak 3000 Power Module Version 4.2 - Manual (Page 156)

APPENDIX B
FlexPak 3000 49’1340 e B-52
UNDERWIND ENABLE (Alternate network map, Drop_1, register 32, Bit 5)
Setting this bit to 1 enables two inverter blocks that permit underwind operation.
Setting this bit to 0 disables the two inverter blocks and permits overwind operation.
Parameter Range: 0 = DISABLED (overwind)
1 = ENABLED (underwind)
Default Setting: 0
Parameter Type: Configurable
OIM Menu Path(s): This parameter is available over the network, alternate network map,
drop_1, register 32, bit 5. It cannot be viewed through the
OIM or DCM .
The use this register, CONTROL SOURCE SELECT must be set to NETWORK and NETW REGISTER
MAP SEL (P.914) must be set to ALTERNATE .
The inverters are added to the speed loop block and the current minor loop reference block.
ATTENTION:
If CONTROL SOURCE SELECT is changed from NETWORK to any other control source, the
UNDERWIND ENABLE bit is forced to the default if DISABLED. If the setting was ENABLED and
CONTROL SOURCE SELECT is changed from NETWORK , the motor rotates in the opposite direction
when the drive is restarted. The active speed reference should be set to zero before starting the drive
from the new control source. Slowly increase the speed reference until the proper rotation direction
can be determined. If it is incorrect, change the setting of the FORWARD/REVERSE input. The active
speed reference is based on the new control source and the AUTO/MANUAL setting.
From Speed Reference
Mode Select Block Diagram
(SPD LOOP REFERENCE)
SPD LOOP LAG FREQ
(SPD LOOP OUTPUT)
SPD LOOP
LAG BYPASS
(SPD LOOP ERROR)
WLG
LAG
(SPD LOOP
LAG OUTPUT)
PI
KP HI
WLD LO
To CML Reference
Block Diagram
+
D.5(E)
P.295
P.297
P.215
P.217
P.298
P.299
D.9(A)
A
B
A * B
1000
UNDERWIND ENABLE 1)
Netw. Drop 1, Reg. 32, Bit 5
SPEED FEEDBACK GAIN 1)
Netw. Drop 1, Reg. 38
INIT
RST
* BYPASS
ENABLE
OFF
*ON
Feedback Multiplier
Bypass 2)
EN