Io 401 Module - Grundfos IO 401 Installation And Operating Instructions Manual

2. IO 401 module

Pos. Description
1 and 6 Inputs for Pt100/Pt1000
2 and 5 Analog inputs and supply for analog sensor
3 and 4 Digital inputs
7 Internal temperature sensor (pump 1)
8 Internal temperature sensor (pump 2)
9 Digital output (pump 1)
10 Digital output (pump 2)
Connection for impedance protection module
11
(FB 101)
12 and 17 Digital inputs
13 and 16 Analog inputs and supply for analog sensor
14 and 15 Inputs for Pt100/Pt1000
1
2
3
4
5
6
8
7
9
10 11
Functions
• 5 digital inputs (24 V measuring voltage).
• 2 analog 8-bit inputs, e.g. for Grundfos
4-20 mA water-in-oil sensor.
• Inputs for Pt100/Pt1000.
• Inputs for PTC sensor or thermal switch.
These inputs have reinforced insulation
(5 V measuring voltage).
• Relay outputs for pump control (400 V, NO).
• Phase sequence detection.
17
16
15
14
13
12
7