Flowrite™ 599 Series Technical Instructions Document No. 155-717 September 25, 2018 SKB/C/D 62UA Series Electronic Valve Actuator 24 Vac Proportional Control Advanced Features SKB/C SKD Siemens Industry, Inc. Description The Flowrite 599 Series SKB/C/D62UA Electronic Valve Actuator requires a 24 Vac supply and receives a 0 to 10 Vdc or a 4 to 20 mA control signal to proportionally control a valve. This actuator is designed to work with valves with a 3/4-inch (20 mm) or 1-1/2- inch (40 mm) stroke. Features • Direct-coupled installation requires no special tools or adjustments • Visual and electronic stroke indication • Die-cast aluminum housing • Manual override • Spring return to fail-safe position • Automatic stroke calibration • Direct or reverse acting • Adjustable start and span • Stroke limit control • Choice of linear or equal-percentage flow characteristic • Maintenance-free Application These electronic actuators are designed to be used with Flowrite 599 Series valves with either 3/4-inch (20 mm) stroke (SKB/D) or a 1-1/2 inch (40 mm) stroke (SKC) in liquid and steam service applications; or other manufacturer's valves with appropriate Universal Valve Linkage Kits. Technical Instructions Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Document Number 155-717 September 25, 2018 Page 2 Siemens Industry, Inc. Product Numbers Table 1. Product Numbers. Actuator Stroke Order Number 3/4-inch (20 mm) SKB62UA SKD62UA 1-1/2 inch (40 mm) SKC62UA Warning/Caution Notations WARNING: Personal injury or loss of life may occur if you do not perform a procedure as specified. CAUTION: Equipment damage or loss of data may occur if you do not perform a procedure as specified. Specifications Power Supply Operating voltage (SELV,PELV) 24 Vac ± 20% Frequency 50 or 60 Hz Power consumption SKB62UA 17 VA/12W SKC62UA 28 VA/20W SKD62UA 17 VA/12W Operating Type of control (proportional) 0 to 10 Vdc; 4 to 20 mA; or 0 to 1000 ohms Running time Opening: Closing: SKB62UA 120 seconds 15 seconds SKC62UA 120 seconds 20 seconds SKD62UA 30 seconds 15 seconds Spring-return time Closing: SKB62UA 15 seconds SKC62UA 20 seconds SKD62UA 15 seconds Nominal stroke SKB62UA 3/4-inch (20 mm) SKC62UA 1-1/2-inch (40 mm) SKD62UA 3/4-inch (20 mm) Position force SKB/C 62UA 2800N SKD62UA 1000N Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Technical Instructions Document Number 155-717 September 25, 2018 Siemens Industry, Inc. Page 3 Signal Inputs Terminal Y Voltage 0 to 10 Vdc Input impendence 100K ohm Current 4 to 20 mA Input impedance 240 ohm Signal resolution <1% Hysteresis <1% Terminal Z Resistance 0 to 1000 ohm Override control functions Z not connected No function (priority at Terminal Y) Z connected directly to G Maximum stroke 100% Z connected directly to G0 Minimum stroke 0% Z connected to M via 0 to 1000 ohm Linear or equal percentage Signal Inputs, Continued Terminal U Voltage 0 to 9.8 Vdc ± 2% Load impedance >500 ohm Current 4 to 19.6 mA ± 2% Load impedance <500 ohms Ambient Conditions Media temperature SKD 20°F to 300°F (-7°C to 150°C) SKB/C 20°F to 337°F (-7°C to 170°C) Operation To IEC 721-3-3 Environmental conditions Class 3K5 Temperature SKD 5°F to 122°F (-15°C to 50°C) SKB/C 5°F to 130°F (-15°C to 55°C) Humidity 5% to 95% rh Transport To IEC 721-2-1 Environmental conditions Class 3K5 Temperature 22°F to 149°F (-5°C to 65°C) Humidity <95% rh Storage To IEC 721-3-1 Environmental conditions Class 1K3 Temperature SKD 5°F to 122°F (-15°C to 50°C) SKB/C 5°F to 130°F (-15°C to 55°C) Humidity 5% to 95% rh Agency Certification UL Listed to UL873 C-UL Certified to Canadian standard C22.2 No. 24-93 Meets CE requirements: EMC Directive 89/336/EEC C-tick N474 Protection standard IP54 to EN 60 529 Protection Class III to EN 60 730 Technical Instructions Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Document Number 155-717 September 25, 2018 Page 4 Siemens Industry, Inc. Miscellaneous Materials Actuator housing and bracket Die-cast aluminum Housing box and manual adjustor Plastic Conduit opening 1/2-inch NPSM Dimensions See Figure 23, Figure 24, Figure 25 and Figure 26. Weight SKB62UA 18.9 lbs (8,60 kg) SKC62UA 22.5 lbs (10,00 kg) SKD62UA 8.5 lbs (3,85 kg) Housing NEMA Rating NEMA 1 (Interior only) See Accessories Advanced Features Direction of Operation Direct acting / reverse acting 0 to 10 Vdc; 10 to 0 Vdc 4 20 mA; 20 to 4 mA 0 to 1000 ohm/1000 to 0 ohm Stroke Limit Control Range of lower limit 0% to 45% adjustable Range of upper limit 100% to 55% adjustable Sequence Control Starting Point of Sequence (Start) 0 to 15V adjustable Operating Range of Sequence (Span) 3 to 15V adjustable Accessories Figure 1. Auxiliary Switch. ASC1.6 Auxiliary switch • Sends a signal to indicate that the valve is in the 0% stroke position. • The switching point is fixed at the 0% stroke position. Switching capacity 24 Vac 4A resistive, 2A inductive Lowest recommended current 10 mA Figure 2. Stem Heating Element. ASZ6.6 The stem heating element prevents the formation of ice on the stem when the medium temperature drops below 32°F (0°C). It is suited for universal use with valves having a stem or spindle diameter of 10 or 14 mm. Operating voltage 24 Vac/dc ± 20% Power consumption ≤ 40 VA/30W Figure 3. SKB/C Weather Shield. 599-10065 The SKB/C actuator is UL listed to meet NEMA Type 3R requirements (a degree of protection against rain, sleet, and damage from external ice formation) when installed with this weather shield and outdoor-rated conduit fittings in the vertical position. See Service Kits for replacement ultraviolet resistant cable ties. Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Technical Instructions Document Number 155-717 September 25, 2018 Siemens Industry, Inc. Page 5 Accessories, Continued Figure 4. SKD Weather Shield. 599-10071 The SKD actuator is UL listed to meet NEMA TYPE 3R requirements (a degree of protection against rain, sleet, and damage from external ice formation) when installed with this weather shield and outdoor-rated conduit fittings in the vertical position. See Service Kits for replacement ultraviolet resistant cable ties. Figure 5. Valve Retrofit Kit. Universal Retrofit Kit Kit contains the parts needed to adapt a valve to the following Siemens 599 Series Flowrite actuators: SKB, SKC, SKD, SQX. Selected valves from the following manufacturers can also be accommodated: Honeywell, Johnson Controls, and Siebe. See your local Siemens representative for details. Service Kits Circuit board replacement 4 668 5751 8 Manual override kit 4268 5510 8 Plastic wiring compartment cover 4 104 5582 8 Stem retainer kit Contains one stem nut (Figure 7, Item 6) and one stem retainer clip. 2-1/2 and 3-inch valves 599-10048 4, 5, and 6-inch valves 599-10049 Retainer clamp kit 599-10200 Ultraviolet (UV) resistant cable ties (pkg. of 8) 538-994 WARNING: This product contains a spring under high compression. Do not attempt to disassemble the actuator. Valve Details Figure 6. SKB/C Valve Parts. 1. Manual Adjuster 2. Pressure Cylinder 3. Piston 4. Reservoir 5. Pressure Chamber 6. Pump 7. Return Spring 8. Bypass Valve 9. Coupling 10. Valve Stem 11. Inner Valve 12. Position Indicator (0 to 1) Technical Instructions Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Document Number 155-717 September 25, 2018 Page 6 Siemens Industry, Inc. Valve Details, Continued Figure 7. SKD Valve Parts. 1. Pressure cylinder 2. Piston 3. Oscillating pump 4. Return spring 5. Bypass valve 6. Valve stem retainer 7. Manual override knob 8. Position indicator Standard Operation Figure 8. SKB/C Valve Stem Travel Indication. Figure 9. SKD Valve Stem Travel Indication. The actuator accepts a 0 to 10 Vdc or a 4 to 20 mA control signal. The actuator mounted on a valve produces a stroke proportional to the input signal. When power is turned off or in the event of a power failure, the actuator spring returns the valve to its normal position. Direct Acting Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Technical Instructions Document Number 155-717 September 25, 2018 Siemens Industry, Inc. Page 7 Mounting and Installation The vertical position is the recommended position for mounting and the only position for NEMA Type 3R rating with the Weather Shield. Acceptable mounting positions are shown in Figure 10. Figure 10. Acceptable Mounting Positions. Allow four inches (100 mm) around the sides and back of the actuator and eight inches (200 mm) above and to the front of the actuator. See dimensions in Figure 23, Figure 24, Figure 25, and Figure 26. Detailed installation instructions for field mounting are shipped with the actuator. CAUTION: When removing the knockout do not damage the circuit board. Use the top knockout position, if possible. Start-up Check the wiring for proper connections. NOTE: The valve body assembly determines the complete assembly action. Spring Return Function All SKB/C/D62UA actuators are factory-fitted with a spring-return function. If the control signal or power supply fails, the actuator will return to the 0% stroke position (stem fully retracted). Override Control The override control input (Z) has three modes of operation: NOTE: The Z-modes have a "direct acting" factory setting. Technical Instructions Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Document Number 155-717 September 25, 2018 Page 8 Siemens Industry, Inc. Stroke Calibration To determine the stroke positions 0% and 100% in the valve, calibration is required when the valve/actuator are commissioned for the first time. The actuator must be mechanically connected to a valve and must have a supply voltage of 24 Vac. The calibration procedure can be repeated as often as necessary CAUTION: Before starting calibration, be sure that the manual adjuster is set to Automatic for the actual values to register. There is a slot on the printed circuit boards for the actuators. To initiate the calibration procedure, the contacts inside this slot must be short-circuited (possibly with a screwdriver). See Figure 11. Automatic calibration proceeds as follows (see Figure 12): • Actuator runs to the 0% stroke position (1), the green LED flashes. • Actuator then runs to the 100% stroke position (2), the green LED flashes. • Measured values are stored in the EPROM. • The actuator now moves to the position defined by control signal Y or Z (3), and the green LED now glows steady (normal operation). • Throughout this procedure, output U is inactive, meaning the values only represent actual positions when the green LED stops flashing and remains on continuously. Figure 11. Figure 12. Automatic Calibration. Table 2. LED Status. LED Display Function Action Green ON Normal Operation Automatic operation Flashing Stroke calibration In Progress Wait for calibration to be completed (LED stops flashing) Red ON Faulty stroke calibration Internal Error - Check mounting - Restart stroke calibration (by short-circuiting calibration slot) - Replace electronics Flashing Valve plug jammed Check the valve OFF • No power supply • Faulty electronics - Check mains - Replace electronics Flowrite 599 Series SKB/C/D 62UA Electronic Valve Actuator Advanced Features Technical Instructions Document Number 155-717 September 25, 2018 Siemens Industry, Inc. Page 9 Start-up, Continued Advanced Features 1 2 3 4 Figure 13. DIP Switches. DIP Switches (From Left to Right) 1 Select Direction of Operation 2 Sequence Control or Stroke Limit Control 3 Selection of Control Signal 4 Selection of Flow Characteristic ON Reverse-acting Sequence control 4 to 20 mA Modified* OFF (Factory Settings) Direct-acting Stroke limit control 0 to 10 Vdc Default * Changing the default setting will modify an equal percentage valve to a linear flow characteristic. When set to default, the flow characteristic is determined by the valve body. Next >