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Technical description, installation instructions, operation
1.7
Connection to AS-Interface and PROFIBUS
Connections
DP/AS-i Link 20E has the following connectors:
S Two connectors to the AS-i cable (bridged internally)
S Connectors for functional ground
S One connection to PROFIBUS (9-pin sub D female connector)
The AS-i connectors are located below the lower cover of the front panel of the
DP/AS-i Link 20E.
Connectors to the AS-i cable
The DP/AS-i Link 20E is supplied with power from the AS-Interface.
Warning
!
The device is designed for operation with safety extra-low voltage (SELV). This
means that only safety extra-low voltages (SELV) complying with
IEC950/EN60950/ VDE0805 may be connected to the power supply terminals.
The power unit for supplying the device must comply with NEC Class 2 as descri-
bed by the National Electrical Code(r) (ANSI/NFPA 70).
The DP/AS-i Link 20E has two connectors for AS-i cables, that are jumpered
internally in the DP/AS-i Link 20E.
This allows the DP/AS-i Link 20E to be looped into the AS-i cable.
Caution
!
The DP/AS-i Link 20E may only be connected/disconnected when the AS-i power
supply unit is turned off.
The maximum current via the AS-i contacts is 3 A. If this value is exceeded on the
AS-i cable, the DP/AS-i Link 20E may not be looped into the AS-i cable but must
be connected via a tap line (only one connector pair of the DP/AS-i Link 20E
used).
18
DP/AS-Interface Link 20E
Release 08/2008
C79000-G8976-C235−01
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