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3 Product overview
3.1
Hardware configurations
The HYDROVAR modular concept basically consists of two main parts: the power unit and
the control card. In its BASIC configuration (consisting of only the power unit) the
HYDROVAR can be used as so called BASIC Inverter. In that configuration the HYDROVAR
can be used as a sequence pump in a multi pump system, but also as a simple soft starter
for SINGLE pump applications.
By attaching one of the additional control cards to the BASIC Inverter the HYDROVAR can
be upgraded either to the so called SINGLE or the MASTER Inverter.
BASIC Inverter
– HYDROVAR BASIC unit (not available for HV 4.150 – 4.220).
Application:
- Sequence pump in a multi pump system, SINGLE pump operation as soft-starter
SINGLE Inverter
– HYDROVAR BASIC Inverter with included control card for SINGLE pump
operation. This SINGLE Inverter is not able to support any optional modules like the Relay
Card.
Application:
- Simple SINGLE pump applications
MASTER Inverter
– HYDROVAR BASIC Inverter including the high level control card
(supports also the optional modules like the Relay Card and all specific software features).
Application:
- SINGLE pump control including all extended features
- Multi pump system of MASTER and BASIC Inverters (up to 8 pumps)
- Multi pump system equipped with up to 8 MASTER Inverters
- Control of up to 5 fixed speed pumps when used in combination with the optional relay
card
3.2
Operating modes
3.2.1
Actuator (for SINGLE pump operation only!)
In this mode the HYDROVAR operates as an actuator according an external speed signal or
continuous operation on either one or two programmed frequencies by using the
corresponding digital input.
Please consider that this mode is only possible with a HYDROVAR MASTER or SINGLE
Inverter and is limited for SINGLE pump operation only
3.2.2
Controller
This mode is set as default operating mode and is used for a HYDROVAR in SINGLE pump
operation when there is no connection to any other HYDROVAR via the internal RS485
interface.
