Advertisement
Feedback selection (CCW direction)
To select the CCW direction, set DS #1 to ON, and if the actuator is in Analog or Digital mode, you can program the feedback signal
direction.
If switch No3 is "OFF":
The feedback control is automatically reverse to 4 to 20 mA for 90
to 0 degrees.
0º
20 mA
Zero and span calibration
This feature is applicable to analog control signal only.
1.
Remove power and put all dip switches "OFF". (factory preset).
2.
Apply power and within 10 seconds press and hold the reset button until the LED flashes once. When the LED flashes,
release the reset button, the LED remains illuminated and the zero and span calibration process starts. NOTE: Do not hold
the reset button for too long as it may cancel the process.
3.
Apply new minimum voltage.
It can be any value between 0 to 7 Vdc, with an external 0 to 10 volt supply (ex: MEP).
4.
Press and release the reset button to memorize the new minimum voltage. The LED flashes once and then remains
illuminated.
5.
Apply new maximum voltage.
It can be any value between 3 to 10 Vdc; this value should be greater than the new minimum value.
6.
Press and release the reset button to memorize the new maximum voltage. The LED flashes once and then turns off.
The Zero and span calibration process is complete.
Note: The voltage difference between the minimum voltage and high voltage settings must be at least 3V. If not, the actuator
will ignore the values entered and use the previous values. For example, a minimum voltage of 5V and a maximum
voltage of 7V represent a difference of 2V.
Note: To reset zero and span to 2 to 10 Vdc (factory value), re-select the analog control signal mode, see Programming.
www.neptronic.com
90º
4 mA
BM Series Actuators
Specification and Installation Instructions
If switch No3 is "ON":
The feedback control is to 20 to 4 mA for 90 to 0 degrees.
0º
4 mA
90º
20 mA
4
Advertisement
