4
Connections and wiring
4.1
Connection of the shield-rail for analog signals
Fig.4-1:
Connection of the shield-rail for analog signals
1
... Shield rail
2
... GND connection against 50 Hz field, length max. 1 m
4.1.1
Notes on wiring the analog lines
●
Analog lines and reference current must be connected with a shielded ca-
ble.
●
The shield rail must be connected to the GND terminal at one point.
●
The shield must be placed on the shield rail as shown above.
●
To attain optimum interference immunity, analog lines and reference cur-
rent should not be laid out parallel to strong interfering lines (e.g. lines of
converters for motors).
4.2
Temperature inputs
4 measurement inputs are available for the PT100 resistance sensors. These
can be operated in 2 or 4 conductor technique.
The resolution of the measuring procedure on the inputs is 14Bit. Each of these
inputs is equipped with sensor failure monitoring.
TM 225/A
Connections and wiring
© KEBA 2011
Project engineering manual V1.06
13
Summary of Contents for Kemro TM 225/A
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