Alicat MC Series Mass Flow Controller User Manual
Page 9
9
INPUT SIGNALS
Analog Input Signal
Apply analog input to Pin 4 as shown on page 8.
For 6 Pin Locking Industrial Connector, DB9 and DB15 pin-outs see pages 72 to 84.
For PROFIBUS pin-outs see page 70.
Standard 0-5 Vdc is the standard analog input signal. Apply the 0-5 Vdc input
signal to pin 4, with common ground on pin 8. The 5.12 Vdc output on pin 2 can
be wired through a 50K ohm potenti ometer and back to the analog input on pin
4 to create an adjustable 0-5 Vdc input signal source as shown below.
7
6
5
4
3
2
1
8
5.12 Vdc
50 KOhm
Potentiometer
0-5 Vdc
Simple method for providing set-point to controllers
Opti onal 0-10 Vdc: If specifi ed at ti me of order, a 0-10 Vdc input signal can be
applied to pin 4, with common ground on pin 8.
Opti onal 4-20 mA: If specifi ed at ti me of order, a 4-20 mA input signal can be
applied to pin 4, with common ground on pin 8.
NOTE: This is a current sinking device. The receiving circuit is essenti ally a 250
ohm resistor to ground.
NOTE: 4-20mA output requires at least 15 Vdc power input.
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Electrical Connecti ons and Basic Wiring
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