40
X4 RS485-Interface
1
User SIO-Interface: SIO-
2
User SIO-Interface: SIO+
3 GND, electronic ground
User Interface
for external usage
4
Internal SIO-Interface: SIO-
5
Internal SIO-Interface: SIO+
X4/
6 GND, electronic ground
Internal Interface
for multi-pump-systems
RS-485 – Internal Interface RS-485 - User Interface
The internal RS-485 Interface is used for the communication between up to 8 HYDROVARs
in a multi-pump application. For the connection of each HYDROVAR via the RS-485
interface the terminals X4/4-6 on the Control Card, and even the terminals X2/1-3 on the
power unit can be used. (Connection example: using one Master- and three Basic -
Inverters.)
By using the RS-485 – User Interface on the Control Card, one or more HYDROVAR can
communicate via the standardized Modbus-protocol with an external-control-device (e.g.
PLC). This interface can be used for parameterising and controlling the HYDROVAR via
external devices. Also active for HYDROVAR Single Inverter - Configuration.
Do not use the Internal Interface as User Interface and vice versa!
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