English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ........................5
1.1 Hazard statements..........................5
1.2 Notes ..................................5
2. Installing the product .......................5
2.1 Location ................................5
2.2 Mechanical installation .......................5
2.3 Electrical connection.........................6
3. Product introduction........................6
3.1 Product description .........................6
3.2 Intended use, IO 242 ........................6
3.3 Terminals ...............................7
3.4 Identification..............................8
3.5 GENIbus ................................8
3.6 PTC...................................9
4. Servicing the product .......................9
4.1 Inspecting the product functions..................9
4.2 Replacing the IO module ......................9
5. Technical data ...........................11
6. Disposing of the product ....................11
1. General information
Read this document before you install the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
2. Installing the product
2.1 Location
The product is intended for installation in a control panel.
2.2 Mechanical installation
2.2.1 Mounting the module
The product is prepared for horizontal mounting on a 35 mm DIN
rail (EN 50022). Recommended height: 7.5 mm.
Module dimensions and required minimum clearance above and
below the module are shown on the drawing.
124 (4.88")
115.4 (4.54")
56 (2.2")
62 (2.4")62 (2.4")
Max. 2A Max. 2A
24 V
GND
REL 4C
GND
DI 4
GND
GND
GND
MPF2
MPF1
GND
DI 3
DI 2
DI 1
GND
24 V
EXT
ADI
REL 3C
PTC 2B
PTC 2A
PTC 1A
REL 2
COM
REL 1
L1
L2
L3
N
PTC 1B
CT 2B
CT 2A
CT 1A
CT 1B
REL 4O
REL 3O
REL 3
REL 4
GENI
480Y / 277V
AC
IO 242
10 (0.39")
20 (0.79")
TM072260
Dimensions for IO 242
1. Fit the module by hooking the top on the DIN rail (1) and
pressing the bottom against the rail (2).
TM072261
2. Connect the cables.
2.2.2
EMC-correct installation
The panel usually contains a control unit, a module, contactors and
other power equipment. Other Grundfos modules may also be fitted
into the panel.
To ensure faultless operation, it is very important to install the
electronic modules in an EMC-correct way.
2.2.2.1
How to install the product in an EMC-correct way
• Use shielded cables for external GENIbus. Connect the shield
to the cable clamp.
5
English (GB)
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