Smart Positioner
YT-2500 / 2550 / 2501 Series
Product manual
Ver. 1.04
50
9. Error and Warning Code
Below error and warning codes can be checked from “View” mode if there are any problems
while using the product.
9.1
Error code
Error codes are indicated if the positioner cannot be controlled, malfunctions or becomes
imprecise.
Error Code
Code Description and Cause
Action
MT ERR L
Indicates that due to wrong
positioning and installation of the
positioner, there is a chance that
the feedback lever and the
positioner’s stopper could collide
when the lever is at 0% during
auto calibration.
when this error is detected, auto
calibration is aborted and this
message is indicated
immediately on LCD display.
Set the feedback lever
horizontally when at 50%.
Re-adjust the position of the
positioner by referring to the
following effective range of the
feedback lever’s angle
(Linear : 30 deg., Rotary : 90
deg.)
MT ERR H
Indicates that due to wrong
positioning and installation of the
positioner, there is a chance that
the feedback lever and the
positioner’s stopper could collide
when the lever is at 100% during
auto calibration.
when this error is detected, auto
calibration is aborted and this
message is indicated
immediately on LCD display.
CHK AIR
Indicated when the valve is not
moving despite the positioner
has given “Full Open” signal
during auto calibration.
when this error is detected, auto
calibration is aborted and this
message is indicated
immediately on LCD display..
Check if pressure is being
supplied normally to the
positioner.
RNG ERR
Indicated when the feedback
lever’s angle used is excessively
small during auto calibration.
when this error is detected, auto
calibration is aborted and this
message is indicated
immediately on LCD display.
Re-install the positioner by
moving it towards the actuator
stem so that the angle use of
the feedback lever becomes
larger.