Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 60)

Publication 1760-UM002B-EN-P - March 2005
2-26 Installation
Set Point Potentiometer
Figure 2.27 Set Point potentiometer, set point potentiometer with upstream resistor
Use a potentiometer with a resistance of greater than or equal to1 k Ω, e.g. 1 kΩ,
0.25W.
Temperature Sensor, Brightness Sensor, 20 mA Sensor
Figure 2.28 Temperature sensor, brightness sensor, 20 mA sensor
4 to 20 mA (0 to 20 mA) sensors can be connected using an external 500 Ω
resistor.
The following values apply:
• 4 mA = 1.9V
• 10 mA = 4.8V
• 20 mA = 9.5V
(according to U = R x I = 478 Ω x 10 mA ~ 4.8V)
L01–
> 1 A
L01+
I1 I3 I4 I7 I8 I9 I10
L02+
I2 I5 I6 I11 I12
0 V +12 V
H
h
1.3 kO/0.25 W
1 kO/0.25 W
+24V 0V 0V
L01–
> 1 A
L01+
I1 I3 I4 I7 I8 I9 I10
L02+
I2 I5 I6 I11 I12 +24V 0V 0V
0...10 V
0 V +12 V
h
H
+24 V H
0 V
Out
0...10 V
–35...55 ˚C
a
500 O
4...20 mA