HALYTECH
Illuminator User Manual
Page 13
2. “ANALOGUE” type accepts an analogue voltage from 0 – 2.5V. The following
diagrams show wiring details for most common sensor types.
(i)
2-WIRE 0 - 20 mA
and 4 – 20 mA
current loop sensors require an external 120
Ohm, ¼ W resistor (supplied):
(ii)
4-WIRE 0 - 20 mA
and 4 – 20 mA
current loop sensors require an external 120
Ohm, ¼ W resistor:
(ii)
Voltage inputs
may require up to two external resistors:
SENSOR RANGE
VALUE OF Rx
VALUE OF Ry
0 – 2.5V
None required
Leave out
0 – 5V
1 Kohm ¼ W metal film
1 Kohm ¼ W metal film
0 – 10V
3.3 Kohm ¼ W metal film
1 Kohm ¼ W metal film
Sensor
+
+
-
-
Power
Supply
+
-
Illuminator system ground
Illuminator
IN X
120 Ohm ¼ W
Resistor
+
-
Sensor
+
-
Illuminator system ground
Illuminator
IN X
Ry
Rx
Sensor
+
+
-
-
Power
Supply
+
-
Illuminator system ground
Illuminator SMS
LC
IN X
120 Ohm ¼ W
Resistor
+
-