RA33 Wiring
Endress+Hauser 19
4.4 Outputs
4.4.1 Analog output
This output can be used either as a 0/4 to 20 mA current output or as a voltage pulse output.
The output is galvanically isolated. For the terminal assignment, refer to → ä 14.
4.4.2 Pulse output
Active voltage pulses are output at the pulse output.
Voltage level:
• 0 to 2 V corresponds to Low level
• 15 to 20 V corresponds to High level
Maximum output current: 22 mA
4.4.3 Open collector output
The two digital outputs can be used as status or pulse outputs. Make the selection in the
following menus: Setup É Advanced setup or Expert É Outputs É Open Collector
4.5 Communication
!
Note!
The USB interface is always active and can be used independently of other interfaces. Parallel
operation of multiple optional interfaces, e.g. fieldbus and Ethernet, is not possible.
4.5.1 Ethernet TCP/IP (optional)
The Ethernet interface is galvanically isolated (testing voltage: 500 V). A standard patch cable
(e.g. CAT5E) can be used to connect the Ethernet interface. A special cable gland is available for
this purpose which allows users to guide pre-terminated cables through the housing. Via the
Ethernet interface, the device can be connected using a hub or a switch or directly to office
equipment.
• Standard: 10/100 Base-T/TX (IEEE 802.3)
• Socket: RJ-45
• Max. line length: 100 m
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