Rotork Actuator Problem

According to the manual, the position indications are given by volt-free switches, so the position feedback is independent of power being applied to the valve motor; the contact should operate correctly when the valve is moved by hand.

• Check out the wiring - are the cables picking up the right contacts?
• Check out the settings - are the correct switches being operated at limits of travel?

cables aren't faulty , settings are under scrutiny due to power outage

as of now, opened limit indication is not attained. it is stuck on intermediate position indication, while the lcd display is on 00% opening.

the last time, when the power supply was cut off, operators turned the hand wheel manually then the power was restored.

how will this affect the current position indication? from what i understand, current position is constantly being compared to the settings in the EEPROM then output is made.

could it be that actuator was unable to determine its actual position during the power interuption?

thanks

<...as of now, opened limit indication is not attained. it is stuck on intermediate position indication, while the lcd display is on 00% opening....>

It sounds as though the set-up procedure, given in the manual, needs to be carried out again.

<...could it be that actuator was unable to determine its actual position during the power interuption?...>

Unlikely.

you have to do a function test for the actuater by seding signal to the actuator while the machine is down.

1-opening signal and you have to go 25%,50%,75% and 100% and watch the actuator response.

2- closing signal 25%,50%,75% and 100% and also watch the actuator response.

if you found there is adifferent so you have to re-setting or adjust opening and closeing value by the instrument people.

Try using the Auma Actuators..