Yaskawa iQpump Controller User Manual - Manual (Page 253)

G.9 iQpump Software Multiplexing Set-up
YASKAWA TM.iQp.06 iQpump Controller User Manual 253
2. Use shielded communication cable for steps 3 and 4 to connect the iQpump drives in a daisy chain manner according to Figure G.12.
3. Daisy chain the (R+ to S+) terminals between each iQpump drive.
4. Daisy chain the (R- to S-) terminals between each iQpump drive.
Figure G.10
Figure G.12
◆ Setting the iQpump Drive Networking Parameters
1. Set parameter H5-01, Serial Node Address, on each iQpump drive.
Note: For optimal performance, use consecutive numbers starting from 1. Parameter setting H5-01 must be unique for each
iQpump drive.
2. Set parameter P9-25, Highest Node Adr, on each iQpump drive.
Note: For optimal performance, set to highest H5-01 value. This setting must be the same for all the iQpump drives on the
network.
3. Set P1-01 to 3 (MEMOBUS/Modbus Network) on all the iQpump drives.
4. Cycle main power to all networked iQpump drives.
Note: The H5-01 setting will not take effect until power is cycled to the iQpump drive and may cause communication errors
and unexpected behavior.
◆ Verifying the iQpump Drive Network Communications
Access monitor U1-67, Network Activity, and verify that:
• No iQpump drives have a value of 0 <->
• All iQpump drives are receiving valid data indicated by a regular change in the monitor value.
• At least one iQpump drive has the unit <M>, while the others have the unit <+>.
Figure G.11
Figure G.13 Example Digital Operator Displays for Verifying Correct Communication
Drive 1 Drive 2 Drive 3
H5-01 = 1 H5-01 = 2 H5-01 = 3
Drive 1 Drive 2 Drive 3
P9-25 = 3 P9-25 = 3 P9-25 = 3
Drive 1 Drive 2 Drive 3
P1-01 = 3 P1-01 = 3 P1-01 = 3
R+ S+ R- S-
Drive 3
R+ S+ R- S-
Drive 2
R+ S + R- S-
Drive 1
Master Master
Node Node
Al
on
e
Al
on
e