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F-27855-10152
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies
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Selection Guide
© 2019 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. February, 2019 tc
Document Number: F-27395-15
Application Notes
The VBB/VBS Series Ball Valves are valve actuator assemblies designed to make incremental adjustments to flow based on the
control signal input. The actuators are not intended for continuous use in zero dead band control systems.
Two-Position Spring Return SmartX Actuators
When powered, the actuator moves to the desired position, winding the spring return system. When power is removed, the
spring returns the actuator to the normal position. Two-position spring return actuators can be purchased with an optional built-in
auxiliary SPST end switch for interfacing or signaling; for example, zone pump burner control.
Floating/Proportional Spring Return SmartX Actuators
When power is applied to the actuator, there is a 3-second delay before the solenoid latches and the gear train is engaged.
Upon power loss, the solenoid releases after 2 seconds, allowing the actuator to spring return to normal position. This prevents
the loss of valve position during brief outages. The spring return feature should not be used for routine, normal operation.
Proportional Spring Return and Non-Spring Return SmartX Actuators
The control signal input and action is selected by means of the input signal dip switch on
the actuator circuit board.
All actuators are shipped with the input signal dip switch (SW1) set to ON for a 0…10 Vdc
control signal and the remaing dip switches and the control action dip switch set to OFF
for direct action (DA; valves opens with increasing control signal, as shown). When using
a 4…20 mA dc control signal, a separate isolation transformer must be used with each
actuator.
When using switches 1-4, the lowest numbered dip switch set to ON takes priority, e.g. if both SW2 and SW4 are on, SW2 takes
precedent. SW1 through SW4 must be OFF (and SW5 ON) for 4-20 mA mode. For more information see Guidelines for Powering
Multiple Actuators EN-206 (F-26363).
Multiple actuators may be connected to a single controller. Do not exceed the maximum current draw of the controller or
transformer.
Proportional Actuators perform a self-calibration cycle on power-up. The actuator will run to the open direction for approximately
20 seconds and then to the closed direction for approximately 2 ½ min (60 Hz) or 3 ½ min (50Hz). See Table-2 for exact timing.
Once this cycle is complete, the actuator will then accept and respond to the control signal.
Do not use manual positioning while power is applied to the actuator. Manual positioning of the actuator while power is applied is
NOT recommended. If the actuator is manually positioned while power is applied, the calibration cycle will need to be completed
again for the actuator to function properly. To recalibrate the actuator, cycle power off for more than 6 seconds.
Floating Spring Return and Non-Spring Return SmartX Actuators
Spring Return and Non-Spring Return actuators with time-out will automatically limit the running time of the actuator. The time-
out feature automatically cuts off the control signal to the valve after three minutes (see Table-1) of continuous operation. Upon
change in control signal direction, the actuator will resume operation. The controller or thermostat used to operate the Non-
Spring Return Floating actuator without timeout must be configured to turn off the control signal after being continuously on for
three minutes. Multiple actuators may be connected to a single controller. Do not exceed the maximum current draw of the
controller or transformer.
Power/Failure Action
Control Signal Position upon loss of power
Non-Spring Return Actuator Spring Return Open Actuator -
Fail Open
Spring Return Closed Actuator
- Fail Closed
Floating Power to "Open" terminal will open A to AB Maintain last position Will spring A to AB open Will spring A to AB closed
Proportional
DA Dip Switch selected (SW6 OFF)-
Increase in control signal will open A to AB
Maintain last position Will spring A to AB open Will spring A to AB closed
RA Dip Switch selected (SW6 ON)-
increase in control signal will close A to AB
Maintain last position Will spring A to AB open Will spring A to AB closed
2-Position
Control Signal Spring Return Open Actuator Spring Return Closed Actuator
Power On A to AB Closed A to AB Open
Power O󰀨 A to AB Open A to AB Closed
Note: 2-Way valve operation described. For a 3-Way valve, A to AB operation is the same. B to AB operation is opposite that of A to AB operation.
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
0-10V Direct Acting
0-5V Direct Acting
0-10V Reverse Acting
4-20mA Direct Acting
2-10V Direct Acting
5-10V Direct Acting
Mx1…Mx3 A0x
Series Actuators
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies