En
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16
12. Description of functions
12.1 Setpoint
You can set the setpoint for all control modes when
you have selected the desired control mode. See
section
.
12.2 Operating mode
Possible operating modes:
•
Normal
The pump runs according to the selected control
mode.
•
Stop
The pump stops.
•
Min.
You can use the minimum curve mode in periods
in which a minimum flow rate is required. When
operating according to the minimum curve, the
pump is operating like an uncontrolled pump.
•
Max.
You can use the maximum curve mode in periods
in which a maximum flow rate is required. When
operating according to the maximum curve, the
pump is operating like an uncontrolled pump.
•
Manual
The pump is operating at a manually set speed.
In Manual the setpoint via bus is over-ruled. See
section
•
"User-defined speed"
The motor is operating at a speed set by the
user. See section
.
All operating modes are illustrated in fig.
Fig. 14
Operating modes
12.3 Set manual speed
With Grundfos GO Remote, you set the speed via
the Setpoint menu.
You can set the pump speed in percentage of the
maximum speed. When you have set the operating
mode to Manual, the pump starts running at the set
speed. The speed can then be changed manually via
Grundfos GO Remote.
12.4 "Set user-defined speed"
You can set the motor speed in percentage of the
maximum speed. When you have set the operating
mode to "User-defined speed", the motor runs at the
set speed.
12.5 "Control mode"
Available control modes:
•
"Constant pressure" (Const. pressure)
•
"Constant temperature" (Const. temp.)
•
"Constant curve" (Const. curve.)
12.5.1 "Constant pressure"
We recommend this control mode if the pump is to
deliver a constant pressure, independently of the
flow rate in the system. See fig.
.
Fig. 15
"Constant pressure"
This control mode uses the factory-fitted pressure
sensor, if any, which measures the outlet pressure of
the pump.
For pumps without a factory-fitted sensor, you must
connect a pressure sensor to the analog input of the
pump. You can set the pressure sensor in the Assist
menu. See section
.
Fig. 16
"Constant pressure"
Controller settings
For recommended controller settings, see section
"Controller" (Controller settings)
TM0
6
402
4 1
5
1
5
Q
H
Q
H
Max.
Min.
Normal
Normal
Manual
Stop
TM
05
79
0
1
16
13
Examples
• One external pressure sensor.
H
Q
p
p
