SQS65U Powermite 599 MT Series SQS Electronic Valve Actuator 24V Proportional Control, Non-Spring Return, Fail-In-Place
Description
The Powermite 599 MT Series SQS electronic valve actuator requires a 24 Vac supply and receives a 0 to 10 Vdc or a 0 to 1000 ohm control signal to proportionally control a valve. This actuator is designed to work with Powermite 599 MT Series terminal unit valve with a 7/32-inch (5.5 mm) stroke. For use in small to medium HVAC installations with Powermite 599 Series valves and Siemens Building Technologies, Inc. standard valves with a 5.5 mm (7/32-inch) stroke. They can be used in liquid and low pressure steam service applications. A zero voltage control signal returns the valve to its normal position. In the event of a power failure, the SQS65U is non-spring return and holds its last position, the SQS65.5U returns the valve to its normal spring return position. The position output 0 to 10 Vdc signal “U” produces position feedback to the controller. An additive control input at R for 0 to 1000 ohm allows control by either a low temperature detector or a remote setting unit.
Features
Maintenance-free with reversible motor.
UL listed for plenum installations.
Voltage or resistance signal input.
Position output signal 0 to 10 Vdc.
Manual positioning knob with stroke indication allows for repositioning in power-off condition
(SQS65U actuator only).
Mechanical spring returns the valve to its normal (fail-safe) position in power-off conditions (SQS65.5U actuator only).
