Grundfos CRE Montage- Und Betriebsanleitung Seite 11

5.2.9 Connections
As standard the pump types come with the Advanced I/O module.
Advanced I/O module
The Advanced I/O module is the standard functional module in all
MGE motors from 11 to 22 kW.
The module has a number of inputs and outputs enabling the
motor to be used in advanced applications where many inputs
and outputs are required.
The Advanced I/O module has these connections:
• start/stop terminals
• three digital inputs
• one setpoint input
• one sensor input (feedback sensor)
• one sensor 2 input
• one analog output
• two Pt100 inputs
• two signal relay outputs
• GENIbus connection.
If no external on/off switch is connected, connect
Note
terminals 2 and 3 using a short wire.
As a precaution, the wires to be connected to the following
connection groups must be separated from each other by
reinforced insulation in their entire lengths:
Group 1: Inputs
• Start/stop (terminals 2 and 3)
• digital inputs (terminals 1 and 9, 10 and 9, 11 and 9)
• sensor input 2 (terminals 14 and 15)
• Pt100 sensor inputs (terminals 17, 18, 19 and 20)
• setpoint input (terminals 4, 5 and 6)
• sensor input (terminals 7 and 8)
• GENIbus (terminals B, Y and A).
All inputs are internally separated from the mains-conducting
parts by reinforced insulation and galvanically separated from
other circuits.
All control terminals are supplied with protective extra-low voltage
(PELV), thus ensuring protection against electric shock.
Group 2: Output (relay signal, terminals NC, C, NO)
The output is galvanically separated from other circuits.
Therefore, the supply voltage or protective extra-low voltage can
be connected to the output as desired.
• Analog output (terminal 12 and 13).
Group 3: Mains supply (terminals L1, L2, L3)
A galvanic separation must fulfil the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 61800-5-1.
Fig. 10 Connection terminals Advanced I/O module
20: Pt100 B
19: Pt100 B
18: Pt100 A
17: Pt100 A
16: GND (frame)
15: 24 V
14: Sensor input 2
13: GND
12: Analog output
11: Digital input 4
10: Digital input 3
1: Digital input
9: GND (frame)
8: +24 V
7: Sensor input
B: RS-485B
Y: Screen
A: RS-485A
6: GND (frame)
5: +10 V
4: Setpoint input
3: GND (frame)
2: Start/stop
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