Grundfos NBE Series - Page 16

5.8.7.1 Functional module, FM300
Inputs and outputs
The module has these connections:
• three analog inputs
• one analog output
• two dedicated digital inputs
• two configurable digital inputs or open-collector outputs
• Grundfos Digital Sensor input and output
• two Pt100/1000 inputs
• LiqTec sensor inputs
• two signal relay outputs
• GENIbus connection.
The inputs and outputs are internally separated from the power
supply-conducting parts by reinforced insulation and galvanically
separated from other circuits. All control terminals are supplied with
protective extra-low voltage (PELV), ensuring protection against
electric shock.
Signal relay 1
LIVE: You can connect supply voltages up to 250 VAC to the output.
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.
Connection terminals for the power supply
Phases Terminals
Single-phase N, PE, L
Three-phase L1, L2, L3, PE
Connection terminals for inputs and outputs
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.
3
15
8
26
23
25
24
7
21
20
22
B
Y
6
5
2
4
10
A
+24 V*
1
14
9
12
17
19
11
18
+24 V*
+
+24 V*
OC
DI
+24 V*/5 V*
+24 V*
+
+
+
+24 V*/5 V*
+24 V*
+24 V*
+
+
+24 V*/5 V*
+24 V*
+5 V*
AI2
GDS RX
GDS TX
GND
GENIbus A
GENIbus B
+5 V
+24 V
+24 V
GND
GENIbus Y
GND
+5 V
DI1
AI1
DI3/OC1
LiqTec
AI3
GND
DI2
LiqTec
GND
AO
Pt100/1000
Pt100/1000
DI4/OC2
GND
+24 V*
OC
DI
GND
NC
C2
NO
NC
C1
NO
+5 V*
TM053509
Terminal Type Function
NC Normally closed contact
Signal relay 1. LIVE or PELV.C1 Common
NO Normally open contact
NC Normally closed contact
Signal relay 2. PELV only.C2 Common
NO Normally open contact
18 GND Protective earth.
11 DI4/OC2
Digital input/output, configurable.
Open collector: Maximum 24 V resistive or inductive.
19 Pt100/1000 input 2 Pt100/1000 sensor input
17 Pt100/1000 input 1 Pt100/1000 sensor input
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