2 att polarity option – Flowserve MX Electronic Actuator User Manual
Page 67
67
Limitorque MX Electronic Actuator FCD LMENIM2306-06 – 10/13
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4.16.1 APT Polarity Option
The APT option provides a 4-20 mA feedback signal proportional to valve position. APT is connected at terminals 17
and 18 for 4-20 mA output. Consult actuator wiring diagram for details.
NOTE: If the second analog out option is turned ON but this option was not purchased, the display will show a hardware
fault. An optional I/O board is required for this option. To purchase, please contact Limitorque service coordinator at
(434) 528-4400.
During position limit calibration (see Section 3.5.4, Setting Position Limits) the APT is automatically calibrated to
default settings: Default = 20 mA OPEN, 4 mA CLOSE.
To Customize the Settings:
1. Select “CHANGE APT?” from the “SETUP” routine. Select “YES.”
2. Select “NO” to select the status if OFF. If ON, select “YES” to enter the “Status Function APT?” display. Select “NO”
to select ATT display.
3. Select “NO” to select 4 ma/0 VDC2. Select “YES” to enter the “POLARITY” display.
4. Select “NO” to choose between:
20 mA = OPEN
or
20 mA = CLOSE
OR
5. Select “NO” to recalibrate new value (low end 3.4-4.5 mA; high end 19.5-21 mA) as shown on meter. New value will
not be shown on display.
4.16.2 ATT Polarity Option
The ATT option provides a 4-20 mA signal proportional to actuator output torque and is for reference only. The signal
range is from approximately 40% of rated torque to approximately 100% rated torque. This option is connected at
terminals 17 and 18 for 4-20 mA output. Consult the actuator wiring diagram for details.
NOTE: If the second analog out option is turned ON but this option was not purchased, the display will show a hardware
fault. An optional I/O board is required for this option. To purchase, please contact Limitorque service coordinator at
(434) 528-4400.
To Customize the Settings:
1. Select “CHANGE ATT?” from the “SETUP” routine, then “YES” to select ATT status as “ON” or “OFF.”
2. Select “NO” to select the status if OFF. If ON, select “YES” to enter the “Status Function?” display. Select “NO” to
select ATT display.
3. Select “NO” to select 4 ma/0 VDC2. Select “YES” to enter the “POLARITY” display.
4. Select “NO” to choose between:
20 mA = OPEN
or
20 mA = CLOSE
or
5. Select “NO” to recalibrate new value (low end 3.4-4.5 mA; high end 19.5-21 mA) as shown on meter. New value will
not be shown on display.