Alicat M Series Mass Flow Meter - Manual (Page 8)

8
POWER AND SIGNAL CONNECTIONS
Power can be supplied to your meter through either the power jack (power jack not
available on CSA/ATEX approved devices) or the 8 pin Mini-DIN connector.
An AC to DC adapter which converts line AC power to DC voltage and current as
specifi ed below is required to use the power jack.
Meters require a 7-30 Vdc power supply with a 2.1 mm female positi ve center
plug capable of supplying at least 100mA.
Note: 4-20mA analog output requires at least 15 Vdc.
Standard 8 Pin Mini-DIN Pin-Out
Pin Functi on
Mini-DIN
cable color
1 Not Connected (or opti onal 4-20mA Primary Output Signal) Black
2
Stati c 5.12 Vdc [or opti onal Secondary Analog Output (4-20mA,
5Vdc, 10Vdc) or Basic Alarm]
Brown
3 Serial RS-232RX / RS-485(–) Input Signal (receive) Red
4
Meters/Gauges = Remote Tare (Ground to Tare)
Controllers = Analog Set-Point Input
Orange
5 Serial RS-232TX / RS-485(+) Output Signal (send) Yellow
6 0-5 Vdc (or opti onal 0-10 Vdc) Output Signal Green
7 Power In (as described above) Blue
8
Ground (common for power, digital communicati ons, analog signals
and alarms)
Purple
Note: The above pin-out is applicable to all the fl ow meters and controllers with the
Mini-DIN connector. The availability of diff erent output signals depends on the opti ons
ordered. Opti onal confi gurati ons are noted on the unit’s calibrati on sheet.

  
 


CAUTION! D� ��� ����e�� ���er �� �i�s 1 ��r���� 6 �s �er���e��
�����e ��� ����r!
It is common to mistake Pin 2 (labeled 5.12 Vdc Output) as the standard 0-5 Vdc
analog output signal. In fact Pin 2 is normally a constant 5.12 Vdc that refl ects
the system bus voltage and can be used as a source for the set-point signal.
For 6 Pin Locking Industrial Connector, DB9, and DB15 Pin-outs, see pages
58 to 70. For PROFIBUS Pin-out, see page 56
1 2
3 4 5
6 7 8