Grundfos TPE2 - Connection Terminals

The motor is protected against transients
from the power supply according to EN
61800-3. In areas with high lightning
intensity, we recommend external lightning
protection.
Overload protection
If the upper load limit is exceeded, the motor
automatically compensates for this by reducing the
speed and stops if the overload condition persists.
The motor remains stopped for a set period. After this
period, the motor automatically attempts to restart.
The overload protection prevents damage to the
motor. Consequently, no additional motor protection is
required.
Overtemperature protection
The electronic unit has a built-in temperature sensor
as an additional protection. When the temperature
rises above a certain level, the motor automatically
compensates for this by reducing the speed and
stops if the temperature keeps rising. The motor
remains stopped for a set period. After this period, the
motor automatically attempts to restart.
Protection against phase unbalance
Three-phase motors must be connected to a power
supply with a quality corresponding to IEC 60146-1-1,
class C, to ensure correct motor operation at phase
unbalance. This also ensures long life of the
components.
Related information
31.2 Leakage current
32.2 Leakage current, AC
9.5
Connection terminals
The descriptions and terminal overviews in this
section apply to both single-phase and three-phase
motors.
For maximum tightening torques, see
section Torques.
Related information
34.1 Torques
9.5.1
Connection terminals, advanced functional
module, FM 300
The advanced module has these connections:
• Three analog inputs.
• One analog output.
• Two dedicated digital inputs.
• Two configurable digital inputs or open-collector
outputs.
• Input and output for Grundfos Digital Sensor. The
input and output are not applicable for TPE2,
TPE2 D pumps. The built-in sensor for TPE3,
TPE3 D pumps is connected to this input.
• Two Pt100/1000 inputs. For some pumps, the
built-in temperature sensor is connected to
Pt100/1000 input 1 (terminals 17 and 18).
• Two LiqTec sensor inputs.
• Two signal relay outputs.
• GENIbus connection.
See figure Connection terminals, FM 300.
Digital input 1 is factory-set to be start-stop
input where open circuit results in stop. A
jumper has been factory-fitted between
terminals 2 and 6. Remove the jumper if
digital input 1 is to be used as external
start-stop or any other external function.
DANGER
Electric shock
Death or serious personal injury
‐ Make sure that the wires to be
connected to the connection groups
below are separated from each other
by reinforced insulation in their entire
lengths.
• Inputs and outputs
All inputs and outputs are internally separated
from the mains-conducting parts by reinforced
insulation and galvanically separated from other
circuits.
All control terminals are supplied by protective
extra-low voltage, PELV, thus ensuring protection
against electric shock.
• Signal relay outputs
- Signal relay 1:
LIVE:
You can connect supply voltages up to 250
VAC.
PELV:
The output is galvanically separated from other
circuits. Therefore, you can connect the supply
voltage or protective extra-low voltage to the
output as desired.
- Signal relay 2:
PELV:
The output is galvanically separated from other
circuits. Therefore, you can connect the supply
voltage or protective extra-low voltage to the
output as desired.
• Mains supply, terminals N, PE, L or L1, L2, L3, PE
21
English (GB)