Grundfos CUE Series User Manual

19
8.2 Controlled operation (closed loop)
TM03 8475 1607 TM03 8804 2507
Proportional
differential
pressure.
The differential
pressure is reduced
at falling flow rate
and increased at
rising flow rate.
TM03 8476 1607 TM03 8804 2507
Constant
differential
pressure, pump.
The differential
pressure is kept
constant,
independently of
the flow rate.
TM03 8476 1607 TM03 8806 2507
Constant
differential
pressure, system.
The differential
pressure is kept
constant,
independently of
the flow rate.
TM03 8476 1607 TM03 8805 2507
Constant pressure.
The pressure is
kept constant,
independently of
the flow rate.
TM03 8477 1607 TM03 8807 2507
Constant pressure
with stop function.
The outlet pressure
is kept constant at
high flow rate.
On/off operation at
low flow rate.
TM03 8482 1607 TM03 8808 2607
Constant level.
The liquid level is
kept constant,
independently of
the flow rate.
TM03 8482 1607 TM03 8809 2607
Constant level with
stop function.
The liquid level is
kept constant at
high flow rate.
On/off operation at
low flow rate.
TM03 8478 1607 TM03 8810 2507
Constant flow rate.
The flow rate is
kept constant,
independently of
the head.
CUE
Δp
CUE
Δp
CUE
Δp
CUE
p
CUE
p
CUE
L
CUE
L
CUE
Q
TM03 8482 1607 TM03 8811 2507
Constant
temperature.
The liquid
temperature is kept
constant,
independently of
the flow rate.
CUE
t
Grundfos.bk Page 19 Friday, July 30, 2010 10:10 PM

Grundfos CUE Series Specifications

General

Category	DC Drives
Output Voltage	24 V DC
Control Signal	0-10 V, 4-20 mA
Communication	Modbus RTU
Protection Features	Overvoltage, overcurrent, overtemperature, short circuit
Humidity	5% to 95% (non-condensing)
Enclosure class	IP20
Enclosure Rating	IP20