Function; Application Range; Device Design - Stahl 9440/22-01-11 Betriebsanleitung

Function and Device Design
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4.1

Function

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Function
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The CPU & power module (CPM) 9440/22 fulfils the function of a gateway between the
internal bus of an IS1+ field station and the fieldbus which connects the field station singly
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or redundantly to the automation system.
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Application range

The CPM is designed for IS 1+ field stations and may be installed in hazardous areas of
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Zone 1 / Division 1, Zone 2 / Division 2 or Zone 21 and 22 and in safe areas.
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Mode of operation
The CPM contains a power supply unit for its own power supply and also for supply
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to the I/O modules and field circuits. The power supply unit is fitted with undervoltage
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monitoring. The power supply for the I/O modules is implemented via the BusRail.
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Communication with the I/O modules is implemented via the address and data lines
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on the BusRail. The interface of the CPU & power module with the internal data bus
on the BusRail is designed with redundancy.
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4.2

Device Design

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11
12
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13
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8
CPU & Power Module for Zone 1 / Div. 1
Series 9440/22, 9490
# Device component
1 Cover flap
1
2
2 Terminal
3
4
3 Notch lever
4 Socket
5
5 Clamping screw
6
6 Socket
7
8
7 Notch lever
9
10
8 LCD display
9 LED
14
10 Buttons
11 Sub-D socket X1
12 Sub-D socket X2
13 Sub-D socket X3
15
14 Unconnected cable
end
Conduit Hub
15 CPU &
power module
12223E00
Description
Cover flap to ensure degree of protection IP30
(opened)
Ex e terminal (only for base 9490/11-12)
Notch lever for removing the module from the base
Socket for the module
Clamping screw for DIN rail
Socket for the module
Notch lever for removing the module from the base
LCD display
LED for status or error indication
(see the "Troubleshooting" chapter for further
information)
Buttons <up>, <down>
Process bus, primary
Process bus, redundant
ServiceBus
only for base 9490/13-12
only for base 9490/12-12
CPU & power module
162277 / 9440607310
2018-08-13·BA00·III·en·06