Input signals – Alicat P Series Pressure Gauge User Manual
Page 10
10
INPUT SIGNALS
Analog Input Signal
Apply analog input to Pin 4 as shown on page 9.
For 6 Pin Locking Connector, DB9 and DB15 Pin-outs see pages 69 to 80.
For PROFIBUS Pin-outs see page 67.
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.
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.
CAUTION! Do not connect this de�ice to “�oop powered’”
s�stems, as this wi�� destro� portions o� the circuitr� and �oid
the warrant�. I� �ou must inter�ace with e�isting �oop powered
s�stems, a�wa�s use a signa� iso�ator and a separate power supp��.
Gauges: A remote tare can be achieved by momentarily grounding pin 4 to tare.
7
6
5
4
3
2
1
8
5.12 Vdc
50 KOhm
Potentiometer
0-5 Vdc
Controllers: A simple method for providing set-point to controllers
4
8