YASKAWA iQpump1000 - Page 180

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Setting the Drive Networking Parameters
1.
1. Set parameter H5-01, Serial Node Address, on each drive.
Note: For optimal performance, use consecutive numbers starting from 1. Parameter setting H5-01 must be unique for each drive.
2.
Set parameter P9-25, Highest Node Address, on each drive.
Note: For optimal performance, set to highest H5-01 value. This setting must be the same for all the drives on the network.
3.
Set P1-01 to 3 (MEMOBUS/Modbus Network) on all the drives.
4.
Cycle main power to all networked drives.
Note: The H5-01 setting will not take effect until power is cycled to the drive and may cause communication errors and unexpected
behavior.
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Verifying Drive Network Communications
Access monitor U9-02, Network Activity, and verify:
• No drives have a value of 0 <->
• All drives are receiving valid data indicated by a regular change in the monitor value.
• At least one drive has the unit <M>, while the others have the unit <+>.
Note: Set parameter P9-98. Refer to MEMOBUS Multiplexing System-wide Parameter Entry on page 191 for details.
Table 4.8 Network Connectivity Information
Network State
Top Line on Home Screen
(o1-12 = 1)
U9-02 Network Activity
Drive is the Master and is
communicating with
another drive.
Pump Off Network
<M> CONNECTED
<- MONITOR - >
U5-99=
U1-02=
U1-91=
100.0PSI
0.00Hz
62.8PSI
Network Activity
U9-02=
U1-02=
U1-91=
9453<M>
0.00Hz
62.8PSI
- MONITR - DRV RDY
Home
FWD
Drive is a node on the
network and is
communicating with a
Master.
Pump Off Network
<+> CONNECTED
<- MONITOR - >
U5-99=
U1-02=
U1-91=
100.0PSI
0.00Hz
62.8PSI
Network Activity
U9-02=
U1-02=
U1-91=
324<+>
0.00Hz
62.8PSI
- MONITR - DRV RDY
Home
FWD
Drive is not able to
communicate to any other
drives.
Pump Off Network
<-> DISCONNECTED
<- MONITOR - >
U5-99=
U1-02=
U1-91=
100.0PSI
0.00Hz
62.8PSI
Network Activity
U9-02=
U1-02=
U1-91=
0<->
0.00Hz
62.8PSI
- MONITR - DRV RDY
Home
FWD
If a drive displays U9-02 = 0 <->:
• Check physical connections.
•
Verify the H5-oo serial communication settings.
• Confirm the P9-25 and P9-27 settings on all the drives. P9-25 should be set to the highest H5-01 address and at least one
drive should have P9-27 set to 0.
• Cycle main power.
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Multiplexing Principle
Always observed by system:
• New drives start as Lead and run in PI mode.
4.6 iQpump Presets and Functions
180
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual