Pt100/1000 Inputs; Digital Inputs - Grundfos TPE2 Notice D'installation Et De Fonctionnement

17.12 Pt100/1000 inputs

Pump variant
TPE3, TPE3 D
TPE2, TPE2 D
Function
Pt100/1000 input 1, setup
Pt100/1000 input 2, setup
* See section 9.5.1 Connection terminals, advanced functional
module, FM 300.
For some pumps, the built-in temperature sensor is connected to
Pt100/1000 input 1 (terminals 17 and 18).
Set the Pt100/1000 input for a feedback sensor via the Assisted
pump setup menu. See section
If you want to set a Pt100/1000 input for other purposes, you can
do this manually.
You can set the analog inputs via the Setup, analog input menu.
See section 17.49 Setup, analog
If you perform the manual setting via Grundfos GO, you need to
enter the menu for the Pt100/1000 input under the Settings menu.
Function
You can set the Pt100/1000 inputs to these functions:
• Not active
• Feedback sensor
• Ext. setpoint infl.
See section 17.20.1 Setpoint influence
• Other function.
Measured parameter
Select one of the parameters, such as the parameter to be
measured in the system by the Pt100/1000 sensor connected to
the actual Pt100/1000 input. See fig. 55.
1
TT
Fig. 55 Overview of Pt100/1000 sensor locations
Parameter
Liquid temp.
Temperature 1
Temperature 2
Ambient temp.
Measuring range
-58 to +399 °F (-50 to +204 °C).
Factory setting
See section 35. Factory settings.
40

Pt100/1000 inputs

●
●
Terminal
17 and 18
18 and 19
17.48 Assisted pump setup.
input.
2
TT
4 3
DTT
TT
Pos.
1
2
3
Not shown

17.13 Digital inputs

Pump variant
TPE3, TPE3 D
TPE2, TPE2 D
Function
Digital input 1, setup
Digital input 2, setup
* See section 9.5.1 Connection terminals, advanced functional
module, FM 300.To set up a digital input, make the settings
below.
Function
Select one of these functions:
• Not active
When set to Not active, the input has no function.
• External stop
When the input is deactivated, open circuit, the pump stops.
• Min. (minimum speed)
When the input is activated, the pump runs at the set minimum
speed.
• Max. (maximum speed)
When the input is activated, the pump runs at the set
maximum speed.
• "User-defined speed"
When the input is activated, the motor runs at a speed set by
the user.
• External fault
When the input is activated, a timer starts. If the input is
activated for more than 5 seconds, the pump stops and a fault
is indicated. This function depends on input from external
equipment.
• Alarm resetting
When the input is activated, a possible fault indication is reset.
• Dry running
When this function has been selected, lack of inlet pressure or
water shortage can be detected.
When lack of inlet pressure or water shortage, dry running, is
detected, the pump stops. The pump cannot restart as long as
the input is activated.
This requires the use of an accessory, such as these:
– a pressure switch installed on the inlet side of the pump
– a float switch installed on the inlet side of the pump.
• Accumulated flow
When this function has been selected, the accumulated flow
can be registered. This requires the use of a flowmeter which
can give a feedback signal as a pulse per defined flow of
water.
See section 17.24 "Pulse flowmeter setup"
• Predefined setpoint digit 1, applies only to digital input 2
When digital inputs are set to a predefined setpoint, the pump
operates according to a setpoint based on the combination of
the activated digital inputs.
See section 17.21 "Predefined
• Activate output
When the input is activated, the related digital output is
activated. See 17.14 Digital inputs/outputs. This is done
without any changes to pump operation.

Digital inputs

●
●
Terminal*
2 and 6
1 and 9
.
setpoints".