Micronics Portaflow 222, Руководство пользователя

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Micronics Portaflow 222 & 333 User Manual
Issue 3.1 Feb 20 Page 15
2.4 Connecting Outputs
The output cable provides a 4-20mA current source that can drive a maximum load of
620Ω
and 3
digital output pairs for pulse or alarm outputs.
The isolated pulse output is provided by a SPNO/SPNC MOSFET relay which has a maximum load
current of 500mA and maximum load voltage of 24V AC/DC.
This output is suitable for SELV circuits only.
The pulse output is a Volt, or potential free contact and, when selected as a low flow alarm, is
configurable NO/NC.
The 4-20mA current output is available on the white (high polarity) and black (low polarity) wire pairs
(pins 1&2 on the connector). The alarm current due to a flow outside the range specified or due to a
loss of signal is set at 2.5mA.
Using the instrument’s menu system (see page
34), you can:

Select the current output function Off/On

Select the current output signal range (4-20mA, 0-20mA, 0-16mA)

Calibrate the current output signal to a required flow range
Figure 13 Output Wiring
The three digital output pairs for pulse or alarm outputs are as follows:
Output Pin outs Wire pair
Output 1 Pins 3 & 4 Brown/White
Output 2 Pins 5 & 6 Red/White
Output 3 Pins 7 & 8 Orange/White