9.8 Automatic Night Setback
Once you have enabled automatic night setback, the
pump automatically changes between normal duty
and night setback, duty at low performance.
Changeover between normal duty and night setback
depends on the flow-pipe temperature.
The pump automatically changes over to night
setback when the built-in sensor registers a flow-pipe
temperature drop of more than 10 to 15 °C within
approximately two hours. The temperature drop must
be at least 0.1 °C/min.
Changeover to normal duty takes place without a time
lag when the temperature has increased by
approximately 10 °C.
You cannot enable automatic night setback when the
pump is in constant-curve mode.
Factory setting
See the section on factory settings.
Related information
9.58 Factory settings for Grundfos GO
9.9 Analog inputs
The inputs and outputs available depend on the
functional module fitted in the motor.
Functional
module
Analog
input 1
(Terminal
AI1)
Analog
input 2
(Terminal
AI2)
Analog
input 3
(Terminal
AI3)
FM110 • • -
FM310 • • •
FM311 • • •
Wiring examples:
These connection scenarios are also valid for
connection to analog input 2 and analog input 3.
TM083181
2-wire sensor, 0/4-20 mA
TM083182
3-wire sensor, 0/4-20 mA
TM083182
3-wire sensor, 0.5 - 3.5 V, 0-5 V, 0-10 V
TM083184
Setpoint influence, 0.5 - 3.5 V, 0-5 V, 0-10 V; 0/4-20
mA
Pos. Description
1 Potentiometer
2 PLC
3 External controller
To set the input, make the settings below:
Function
You can set the inputs to these functions:
• Not active
• Feedback sensor
The sensor is used for the selected control mode.
• Setpoint influence
The input signal is used for influencing the
setpoint.
• Other function
The sensor input is used for measurement or
monitoring.
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