Toshiba TOSVERT VF-AS3 Instruction Manual page 17

Embedded Ethernet Inverter to inverter communication [C680] to [C682]
[C680: EmbEth. Inverter to inverter communication select]
Adjustment range:
0: Disabled
1: Inverter to inverter communication
2: Pump control
[C681: EmbEth. Inverter to inverter communication ID]
Adjustment range:
0: Leader
1 to 9: Follower 1 to 9
[C682: Emb Eth. Inverter to inverter communication]
Adjustment range:
0: Follower (0Hz command when Leader fails)
1: Follower (continue running when Leader fails)
2: Follower (emergency off when Leader fails)
3: Leader (transmit frequency command)
4: Leader (transmit output frequency signal)
5: Leader (transmit torque command)
6: Leader (transmit output torque command)
When [C680] is set to "1: Inverter to inverter communication", you can use inverter to inverter
communication. (Please refer to "Pump control function manual" E6582124 for usage of "2: Pump control")
Inverter to inverter communication can be used to implement speed-proportional control between multiple
inverters without using a PLC or a computer. Commands are input to the leader inverter via the operation
panel or analog signal.
When the inverter-to-inverter communication function is used, the leader inverter keeps sending data
selected by parameter [C682] to all follower inverters on the same network. You can configure a network
using this function to perform simple synchronized operation or speed proportional operation.
* When the leader trips, all follower inverters operate according to the parameter [C682] of each follower
inverter.
* To select how the followers operate when cable is disconnected or the leader is turned off (continue /
alarm/trip), use the communication error detection function ([C606] to [C609]).
* Up to 9 followers can be connected by this function.
<Communication connection schematic diagram (example)>
Leader
(60Hz)
Inverter
Follower 1 Follower 2
(50Hz) (40Hz)
Inverter Inverter
15
E6582125
Follower 3
(30Hz)
Inverter