AMOT G Series - Status Leds & Alarm States; Electrical Position Feedback

30
Electric Actuator
Rev 4 – MAY 2019 OMMGGE00217
8 When using the optional Positioner, carry out the Option Configuration
procedure. Refer to Section 4.6, page 33.
9 When using the optional Positioner, carry out the Calibration procedure if
required. Refer to Section 4.7, page 38.
10 Check for correct operation of the Actuator.
4.4.3 Status LEDs & Alarm States
Note
The LEDs are only operational when the optional Positioner is installed.
Condition
LED
ALARM
Green
Amber
Red
1
2
Healthy Flashing
1 Hz
Off Off Healthy Healthy
Input out of
range
Off
Flashing
2 Hz
Off Fault Healthy
Motor thermal
trip
Off Off
Flashing
2 Hz
Healthy Fault
Position feedback
fail
Off Off
Flashing
2 Hz
Healthy Fault
Factory setup
mode
Flashing
2 Hz
Flashing
2 Hz
Flashing
2 Hz
Fault Fault
Actuator
calibration in
progress
Flashing
2 Hz
Flashing
2 Hz
Flashing
2 Hz
Fault Fault
Note
The alarm outputs (Positioner option only) are closed when healthy, for fail-
safe reasons.
4.4.4 Electrical Position Feedback
A Hall sensor is fitted as standard to all versions of the EB actuator. Where a
Positioner is also fitted, the Positioner uses the Hall sensor to determine the
position of the actuator. With a Positioner fitted, 5V dc is applied to the
connections of the Hall sensor, giving a dc voltage out. This voltage is fed into
the Positioner, but may also be used to give an external position indication,
provided that the signal is not loaded significantly. An impedance to 0V of not
less than 100k ohms is recommended.
When no Positioner is fitted, the three Hall sensor terminals are not electrically
connected to anything in the actuator, and may be used with any external
circuit to give position indication. The Hall sensor is geared to the actuator
output shaft such that it rotates about 270 degrees for a full quarter turn of
the valve. This means that the output of the Hall sensor will never get fully to
either 0V or 5V. Refer to section 4.9.8 on page 53 for connection details.