Xylem ECOCIRC XL, XLplus Electronic drive - Manual (Page 2)

1 Introduction
The electronic drive described in this manual controls
both ecocirc XL and ecocirc XLplus circulators; the
drive’s main features are:

sensorless motor control

sine wave modulated PWM

2 micro-controllers:
one dedicated to motor control
one implementing the following features:
- several operating and control modes
- night mode operation
- 0-10V analog input signal control
- PWM input signal control
1
- 4-20mA pressure sensor control
- external temperature sensor control
2
- external start/stop signal control
- fault signal control
- connection to Modbus control
systems
2
- connection to Bacnet control systems 3

multiple alarms and errors detection and
control

multiple pump status indication

optional Wireless module control
2

optional RS485 module control
2
In the next chapters, a detailed description of ecocirc
XL
family drives’ features will follow.
1
Only on plug-connected models, see 1.1
2
Only on ecocirc XLplus
3
Only on ecocirc XLplus terminal-connected models, see 1.1