Grundfos CIU 251, Instructions Manual

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English (GB)
2
English (GB)
Functional profile and user manual
Original functional profile and user manual.
CONTENTS
Page
1. Introduction
The CIU 251 consists of a CIM 250 module and an IO 270
multipurpose I/O module mounted in a CIU box. See fig.
1 .
The IO 270 adds I/O features to the functionality of the "standard"
CIU 250. See fig.
2 . This functional profile describes the
additional Modbus registers relating to the IO 270.
Fig. 1
CIM 250 and IO 270 built into a CIU 251 and
connected to a Grundfos product via GENIbus
Fig. 2
IO 270 I/O signals. Jumpers are used to configure
analog input signal types and selection between
AI1/DI1 and AI2/DI2.
The tables below show how to configure the analog and digital
inputs using jumpers J1-J4. It also gives an overview of the
options. Details as how to connect sensors, relays, etc., and the
layout of the terminals can be found in the installation and
operating instructions "Multi-purpose IO module in CIU 27X",
which is the IO 270 hardware manual.
1. Introduction 2
2. Modbus register mapping 3
2.1 CIU 251 register blocks 3
2.2 IO 270 registers
3
T
M
05
7
7
4
2
16
13
I/O
CIM 250
IO 270
Grundfos
product
GENIbus
TM
05
77
43
16
13
Selection AI1 / DI1
J1 J2 Signal
Open Open Analog 0-10 V
Open Closed Analog 0-20 mA
Closed Open Analog 4-20 mA
Closed Closed Digital (default)
Selection AI2 / DI2
J3 J4 Signal
Open Open Analog 0-10 V
Open Closed Analog 0-20 mA
Closed Open Analog 4-20 mA
Closed Closed Digital (default)
IO 270
AI1/DI1
AI2/DI2
DO1
AO1
DI3
DI4
TI1
J1 J2 J3 J4
Analog input 1 or
digital input 1
Analog input 2 or
digital input 2
Digital input 3
Digital input 4
Temperature
Pt100 / Pt1000
Relay output
Analog output
(0-10 V)
Signal
configuration
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