Outputs; Communication - Endress+Hauser EngyCal RH33 Brief Operating Instructions

Wiring
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, (® ä 18).
4.4.2 Relays
The two relays can be switched for alarms or violation of a limit value.
Select relay 1 or 2 under Setup É Advanced setup É System É Fault switching.
Limits are assigned under Setup É Advanced setup É Application É Limits. The various
settings for limits are described in the section "Limits" in the Operating Instruction on CD-ROM.
4.4.3 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
4.4.4 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

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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EngyCal RH33
Endress+Hauser