Chapter 4 Parameters
VFD-EL-W
4-97
Optional Accessories for Multi-pumps under Alternative Operation
When you use the multi-pump operation, pay attention to the following wirings.
1. Use a RJ45 cable (8 pin, Internet cable) without an adapter. Simply connect the master/slave communication
port. If there are more than two pumps, use RMKE-HUB01 to connect RJ45.
RJ45 Female Connector
RMKE-HUB01
RS-485 One-wire to Two-wire
2. Use a RJ11 (6 pin) cable with an adapter to connect the master/slave communication port.
VFD-CMD04
RS-485 RJ11
Four-port communication breakout box
Case:
For alternative operation of multi-pump (Pr.10.35=1 Fixed Time Circulation)
Enables four pumps to operate alternatively by time to extend their life span.
Keeps the water pressure at 3 kg in a water system with constant pressure.
Refer to the diagram below:
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