Installation & Operation Manual Proven Quality since 1892
ECON actuator Fig. 7907, type ELA80
–
3000
Rev.19
–
April 2, 2021
14
4.7
Setting Potentiometer (Optional)
The potentiometer has been calibrated at the factory. However, if re-calibration is required, proceed as
follows:
•
Manually rotate the hand wheel of the actuator to the fully closed position.
•
While measuring the resistance between P1 (black) and P2 (blue), gently rotate the
Potentiometer Gear until it reaches between 80 - 120
Ω
(100
Ω
preferred), by using a flat head
screw driver.
•
Engage the Potentiometer Gear into the Point Shaft Gear and use an Allen key to fasten the
locking bolt of the Potentiometer Gear
.
4.8
Current Position Transmitter
–
CPT (Optional)
The potentiometer is used for the actuator signal feedback . It reads a resistance value w h i c h
corresponds with the current position of the actuator and transfers i t to the CPT card. The CPT
indicates the current position of the actuator throughout the complete stroke by a 4
–
20mA output
signal.
4.8.1 Standard Features
Model
CPT
Power
230(115) VAC ±5%, 50/60Hz 2VA Max
Output Signal
4~20mA DC
Output Impedance
750
Ω
Max
Resolution
Min 1/1000
Position Conversion Accuracy
±0.5 ~ ±1.5%
Ambient Temperature
-20°C (-4°F) up to +70C (158°F)
Ambient Humidity
90% RH Max (Non-condensing)
Dielectric Strength
1 s at (Rated VAC x 2 + 1000) x 1.2
(from Input to power ground)
Insulation Resistance
Above 500V DC 30M
Ω
Vibration
10g, 0~34Hz
P1
P2
P3
