Outputs; Communication - Endress+Hauser EngyCal RH33 Handbuch

EngyCal® RH33
!
Note!
TR10 temperature sensors, which are delivered together with the BTU meter, must be wired
according to the accompanying connection instructions, as the individual characteristic curves
of the temperature sensors are stored in the BTU meter. The assignment is made via the serial
number, which is noted on the nameplate of the sensors. If other sensors are connected (e.g. due
to a defect), the curve must be adapted; see the "Temperature calibration (CVD)" section in the
Operating Instructions on CD-ROM.
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 19.
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. Office Equipment Standard EN 60950 must be taken into consideration to ensure
correct safety distances.
• Standard: 10/100 Base-T/TX (IEEE 802.3)
• Socket: RJ-45
• Max. line length: 100 m
Endress+Hauser
Wiring
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