Electrical Connection - Grundfos RSI 1.5 Notice D'installation Et De Fonctionnement

4.2 Electrical connection

DANGER
To avoid the risk of electric shock or fire,
make sure that the power supply has been
switched off before connecting the
equipment, and make sure the earth
terminal is reliably grounded.
To avoid arcing and fire, tighten all
terminals with the specified torque.
Caution
For distances (pump to inverter) exceeding
15 m (50 ft), we recommend a sine wave
filter with matching current ratings.
Pump type
SP with motor voltage from 380 V and up
Pumps with MG71 and MG80 up to and including 1.5 kW (2 hp)
Reduction of noise emission, low reduction
Reduction of voltage peaks and noise emission, high reduction
* The lengths stated apply to the power cable.
4.2.2 Relay and thermistor input terminals
From term.
From
standard I/O
From term.
#6 #13
RUN
4.2.1 Output filters
Output filters are used for reducing the voltage
stress on the motor windings and the stress on the
motor insulation system as well as for decreasing
acoustic noise from the frequency converter-driven
motor.
One type of output filter is available as an accessory
for the RSI:
• sine-wave filters.
Use of output filters
The table below shows when an output filter is
required and the type to use. The selection depends
on the following:
• pump type
• power cable length
• the required reduction of the acoustic noise from
the motor.
Shaft power, P2
All
Greater than 1.5 kW
All
All
Relays and thermistor
Terminal
21 RO1/1
22 RO1/2
23 RO1/3
24 RO2/1
25 RO2/2
26 RO2/3
28 TI1+
29 TI1-
Sine-wave filter
0-300 m*
0-300 m*
-
0-300 m*
Signal
Relay output 1
Relay output 2
Thermistor input
9