YASKAWA iQpump Micro CIMR-PW Series User Manual page 238

5.11 P: Pump
u P9: Network Options
P9-01: Lead Drive Selection
n
Determines the selection method of the next Lead Drive.
No.
P9-01
Setting 0: Next available
Setting 1: Lowest runtime
Setting 2: Stop history
P9-02: Feedback Source
n
No.
P9-02
The drive Analog PI feedback signal and status are sent to the iQpump MEMOBUS network. The status is dependent on b5-12,
PI Feedback 4 to 20 mA Detection, that is run in the background per drive. If the status is good and the drive is the current
Lead drive, that feedback signal is used as the Network PI Feedback and is constantly sent to all the drives in the network.
When the current Lead drive does not have a good status, the Network PI Feedback is taken from another drive that has a good
status.
When there is no Analog Feedback signal for PI Feedback, the drive uses the Network PI Feedback register when it is allowed
and an alarm can flash if desired.
When P1-01 is set to 3, b5-12 > 0, and the PI source is 4 to 20 mA, the analog feedback detection process starts automatically
for all drives that have P9-02 ≠ 3 and are ready to run on the network as soon as one of the drives receives a Run command
is not running in Pre-charge mode. Drives that fail on the feedback detection will indicate that their feedback signals are invalid
and will not be considered by the iQpump MEMOBUS Network as good sources. The network reads out the valid signals
selected using lead-drive priority, and sends it back to all the drives as the Network PI Feedback. If the current lead drive has
a valid analog feedback signal, it will be the Network PI Feedback signal. Otherwise, the Network PI Feedback signal is set
to a drive with a good analog signal based on the Drive Discovery of the iQPump Memobus Network. In both cases, a status
bit is also sent out indicating that the network has a good feedback source.
b5-12 = 1: Instead of alarm, NetwrkFB Lost message
b5-12 = 2: Instead of fault, NetwrkFB Lost message, drive will not accept iQpump Network run commands, and the stopping
method is fixed to coast-to-stop.
Any drive with b5-12 set to 0 and P9-02 ≠ 3 will effectively have no feedback loss detection and will continuously send the
Analog PI Feedback to the iQpump Network regardless if it is a healthy signal.
When b5-12 is set to 2 and P9-02 ≠ 3, PI Feedback detection will cause an alarm instead when one of the following conditions
exists:
• The drive is in HAND Mode
• There is no Lead drive on the network
• The drive is not in AUTO Mode
Setting 0: Analog only
The drive will never read the Network PI Feedback register as the feedback source, although the drive will still transmit its
own PI Feedback signal to the network. The feedback detection is based on parameter b5-12.
Setting 1: Ana->Net, No alarm
The drive reads the Network PI Feedback register if the analog feedback detection determines a signal loss. If the network
feedback signal is also invalid, it will act according to b5-12. Setting b5-12 to 0 or using a non-4 to 20 mA PI Feedback signal
disables analog feedback detection and prevents the drive from switching to the Network PI Feedback.
Setting 2: Ana->Net, Alarm
The drive reads the Network PI Feedback register if the analog feedback detection determines a signal loss. In addition, an
alarm will be displayed indicating that the analog has been lost, and that the feedback source is now the network. If the network
feedback signal is invalid as well, it will act according to the b5-12 setting. Setting b5-12 = 0 or using a non-4 to 20 mA PI
Feedback signal disables analog feedback detection and prevents the drive from switching to the Network PI Feedback.
Setting 3: Network only
The drive will always read the Network PI Feedback register.
238
Name
Lead Drive Selection
Name
Feedback Source
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Setting Range
0 to 2
Setting Range
0 to 3
Default
1
Default
0