Xylem HYDROVAR HV 4.150 / 4.185 / 4.220 - Manual (Page 61)

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0100
0100 SUBMENU BASIC
SETTINGS
0105
0105 MODE
Controller
Selection of the operation mode
Possible settings: Controller, Cascade Relay, Cascade Serial, Cascade Synchron, Actuator
Controller (Default Setting):
This mode should be selected if only one HYDROVAR MASTER /SINGLE Inverter is used and
no connection to any other HYDROVAR via RS-485 interface is needed.
Cascade Relay:
The standard application for this mode is one MASTER –Inverter fitted with an additional
Relay Card to control up to 5 fixed speed pumps.
No connection to any other HYDROVAR via RS-485 Interface possible.
Advantages: costs, realizing of simple systems
Disadvantage: quality of regulation, reliability
Cascade Serial:
Has to be selected if more than one HYDROVAR controlled pump operate together via the
RS-485 interface.
The standard application for this mode is a multi-pump system with up to 8 pumps, each
fitted with a HYDROVAR MASTER Inverter or a combination of MASTER and BASIC Inverters.
Advantages: reliability, switch over for operating hours optimizing, switch over in case of a
failure (duty standby) and automatic duty assist.
Cascade Synchron:
The Synchronous Controller mode is working in the same way like the cascade serial mode.
The only difference is that all pumps in the multi pump system are running at the same
frequency.
Advantages: In the synchronous mode the pumps can operate in a better efficiency range
and the system is able to provide additional energy saving compared to
standard Cascade Serial mode.
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