42
X4 RS485-Interface
1
User SIO-Interface: SIO-
2
User SIO-Interface: SIO+
3 GND
, electronic ground
User interface
for external communication
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 HYDROVAR
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 either the terminals X2/1-3 on the
power unit can be used. (
Connection example:
using one
MASTER - and three BASIC Inverters)
By using the
RS485 – 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 parameterization 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!
