SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 15
3) Plug the battery connector onto the 2 pin BATTERY Header on the SNS Board.
4) Turn on the Main external power to the actuator.
5) Apply the input signal (4-20mA, 0-10v, etc.) to run the actuator open and closed to verify
that the valve is opening and closing fully. If not, the ZERO and SPAN pots on the
Modulating Controller Board may be adjusted to allow more or less motion in both
directions.
OPERATION:
Upon applying external supply power to the actuator, the Blue LED on the Safe & Secure Board
should illuminate indicating that the power from the external source is on. When the external
power fails, the Blue LED will turn off and the Yellow Battery LED will illuminate indicating that the
actuator is now running on battery power. When this occurs, the actuator will move to the desired
position (OPEN or CLOSED), as selected by the operator during set-up.
ON:
EXTERNAL
UTILITY POWER IS
CONNECTED & ON
OFF:
EXTERNAL
UTILITY POWER IS
DISCONNECTED
OR TURNED OFF
BLUE
ON:
ACTUATOR IS
RUNNING ON
BATTERY POWER
OFF:
ACTUATOR IS NOT
OPERATING ON
BATTERY POWER
YELLOW
ON:
BATTERY IS LOW
RECHARGE OR
REPLACE
OFF:
BATTERY IS
CHARGED
RED
Battery Connector –
Plug the battery
connector into the
header on the SNS
board.
Extra Connections –
Relays & Status
SNS-VP Board
1.4AHr Battery
