SIEMENS SAY81.03U SAY Electronic Valve Actuator Instruction Manual
- June 9, 2024
- SIEMENS
Table of Contents
SIEMENS SAY81.03U SAY Electronic Valve Actuator
Product Description
The SAY Electronic Valve Actuator requires a 24 Vdc or 24 Vac, Class 2, supply signal to control a 1-1/2-inch or 2-inch Siemens Pressure Independent Control valve with a 5/8-inch (15 mm) standard stroke.
Product Numbers
SAY61.03U Proportional Control Actuator SAY81.03U Three-position Control
Actuator
Warning/Caution Notations
- Warning Personal injury or loss of life may occur if you do not follow a procedure as specified.
- Caution Equipment damage or loss of data may occur if you do not follow a procedure as specified.
Required Tools
- 4 mm hex key, or 10 mm wrench
- Flat-blade screwdriver or Phillips screwdriver to remove wiring compartment cover
Expected Installation Time
- 30 minutes Wiring a factory-installed actuator
- 45 minutes Field replacement of the actuator
Prerequisites
NOTE: Consult Technical Support if using with a TEC.
WARNING: If mounting the actuator to a valve already in line, either
close the shut-off valves in the piping (upstream first, then downstream) or
switch off the pump to allow the differential pressure in the valve to drop.
Mounting Positions
OVERVIEW
- A Manual adjuster (with slide switch)
- B Wiring knockouts
- C Position indication
- D Status indication
- E Housing cover
- F Valve stem coupling
- G Yoke
- H Bonnet connection U-bracket
Installation
CAUTION: Do not damage or scratch the polished surface of the valve stem.
Mounting an Actuator to a Valve
-
Ensure stem connection plate in the Valve Stem Coupling is in the OPEN position. See Figure 3.
-
Open the bonnet connection U-bracket. See Figure 4.
-
Pull the valve stem to the fully extended position. Then, slide the actuator on the valve bonnet. See Figure 5.
-
Completely close the bonnet connection Ubracket. See Figure 6.
NOTE: Position the actuator to accommodate the wiring. Hold the actuator in place while tightening the actuator U-bracket bolt. -
Tighten the U-bracket bolt using a 10 mm wrench (or 4 mm hex key) to 5 Nm (44 in-lbs) torque. See Figure 7.
-
Rotate the manual adjuster clockwise to manually extend the actuator shaft until it covers the head of the valve stem See Figure 8.
-
Close the stem connection plate securely over the valve stem. See Figure 9.
-
Secure the stem connection plate by tightening the bolt, using a 10 mm wrench (or 4 mm hex key). See Figure 10.
CAUTION: Do NOT rotate the actuator on the valve once the actuator and valve stem are connected. Doing so will inadvertently adjust the flow setting of the valve or damage the stem.
Removing the actuator from a valve
- Loosen the stem connection plate in the Valve Stem Coupling by loosening the bolt, using a 10 mm wrench (or 4 mm hex key).
- Open the stem connection plate over the valve stem.
- Manually retract the actuator shaft by turning the Manual Adjuster counterclockwise until it reveals the head of the valve stem.
- Loosen the U-bracket using a 10 mm wrench (or 4 mm hex key).
- Completely open the bonnet connection U-bracket.
- Push the valve stem to the fully retracted position. Then, slide the actuator off the valve bonnet.
- Remove the actuator from the valve, being careful not to damage the valve stem.
- Close the bonnet connection U-bracket.
Wiring
Do not use autotransformers. Use earth ground isolating step-down Class 2 power supply transformers. Determine supply transformer rating by summing total VA of all actuators used. The maximum rating for a Class 2 step-down transformer is 100 VA. It is recommended that no more than 10 actuators are powered by one transformer.
Parallel Control of Actuators
- SAY81.0-3U – Three-position actuators must have their own specific controller.
- SAY61.03U – Up to 10 actuators can be driven in parallel from a single controller output with a rating of 1 mA. Modulating actuators have an input impedance of 100KΩ.
NOTE: Use either a Phillips head screwdriver or a flatblade screwdriver to remove the wiring compartment housing cover for access to the terminal block and DIP switches.
DIP Switch Setting (SAY61.03U only)
-
Switch 1: Control Signal
Select between 0 to 10 Vdc or 4 to 20 mA input signal for terminal Y (0 to 10 Vdc default). -
Switch 2: Flow Characteristic
Do not change the flow characteristic switch. The proper flow characteristic is designed into the Siemens Pressure independent Control Valve.
NOTE: Changing the default setting will modify a linear valve to a fast-
opening characteristic. When set to default, the flow characteristic is
determined by the valve body.
Wiring, SAY61.03U
NOTE: If the application requires a reverse-acting, modulating actuator
(a control signal of 0V corresponds to the valve being closed, and 10V to the
valve being open), then the Function Module (AZX61.1) must be ordered and
installed in the SAY61.03U with DIP switch 1 set to ON.
Wiring Diagrams (SAY61.03U)
The wiring diagrams show all possible connections. The application determines
which connections are used. A and B are optional auxiliary switches.
Wiring, SAY81.03U
NOTE: If the application requires a reverse-acting, floating actuator,
then the Y1 and Y2 control signals can be reversed so that the Y1 controller
signal is connected to the Y2 actuator terminal, and the Y2 controller signal
is connected to the Y1 actuator terminal.
Wiring Diagrams (SAY81.03U)
The wiring diagrams show all possible connections. The application
determines which connections are used.
Manual Override
Manual operation
- When pushing the manual adjuster down (1), it engages and the actuator can be manually operated.
- When turning the manual adjuster in a clockwise/counterclockwise direction (2), the actuator’s stem extends/retracts. See Figure 16.
- An overload protection prevents damage to the manual adjuster.
Setting the position
Upon actuation and locking the slide switch (see Figure 17), the manual
adjuster remains engaged. When in this mode, do not turn the manual adjuster.
Disengaging the setting
When resetting the slide switch (see Figure 18), the manual adjuster returns
to Automatic Mode.
Commissioning and Operation
Function Check and Calibration
Mechanical Check
Prior to making the function check, ensure that:
- Actuator is mechanically connected to a Siemens Pressure Independent Control Valve.
- Actuator is in Manual Operation mode.
The actuator can be operated with the help of the Manual Adjuster.
NOTE: Ensure that the actuator’s and valve’s stems are securely connected
in all positions. If the actuator is forced to travel beyond its end
positions, overload protection responds.
Electrical Check
Prior to making the function check, ensure that:
- Actuator is mechanically connected to a Siemens Pressure Independent Control Valve.
- Actuator is in Automatic Operation mode.
- Actuator and, if required, accessories are correctly fitted and connected.
- Power is applied.
Calibration (SAY61.03U Only)
Calibration is required with modulating actuators, and before the function
check. Calibration must be performed manually.
Prior to calibrating, ensure that:
- Actuator is properly connected to a valve.
- Housing cover is removed.
- Power is applied.
If required, calibration can be repeated any number of times.
To initiate the calibration process insert a flat-blade screwdriver into the calibration slot to short out the two sides of the slot. See Figure 19
During calibration, the actuator detects the valve’s end positions and files the exact stroke in its internal memory. Calibration takes place in three phases:
- Atuator drives to H0 (1), retracting actuator stem. Detection of upper end position.
- Actuator drives to H100 (2), extending actuator stem. Detection of lower end position.
- The detected values are stored (3). Then the actuator follows the applied control signal
Observe the status indication (LED) during and after calibration. See Figures
Figure 20 and Table 2.
SAY61.03U Function Check
Perform the function check for modulating actuators after calibration with a
point test according to the following table:
After successful completion of the function check, the actuator is ready for normal operation.
SAY81.03U Function Check
Perform the function check for three-position actuators according to the
following table:
After successful completion of the function check, the actuator is ready for normal operation.
References
Technical Instructions: 155-580
SAY Electronic Valve Actuator Proportional Control 155-581
SAY Electronic Valve Actuator 3-position (Floating) Control
Dimensions
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2016 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA + 1 847-215-1000
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