4 505 SQL3500 SQL8500 Electromotoric Actuators for VKF46 butterfly valves SQL3500 SQL8500 SQL35, SQL36E operating voltage AC 230 V, 3-position control signal SQL85 operating voltage AC 24 V, 3-position control signal Nominal angle of rotation 90 Auxiliary switch and potentiometer for extra functions Manual adjuster and position indicator Variable positioning time with SEZ311 auxiliary module (for SQL36E only) Use For operation of VKF46 butterfly valves as control and shutoff valves in heating, ventilation and air conditioning plant CA1N4505en 10012005 Building Technologies HVAC Products
Type summary Type reference Operating voltage Control Positioning time for 90 at 50 Hz Accessories SQL3500 AC 230 V 3-position 125 s 1 x ASC95 1 x ASC94 1 x ASZ74 SQL8500 AC 24 V AC 230 V 6 s * SEZ311 12 s * ASC36 ASZ36 * Without SEZ311 Function 1 auxiliary switch or 1 double auxiliary switch or 1 auxiliary switch with potentiometer 1000 Ω Auxiliary module and double auxiliary switch and potentiometer 1000 Ω Order Delivery Example: The actuator, butterfly valve, mounting kit and any accessories must be ordered separately When ordering please specify the quantity, product name and type code 1 actuator, type SQL3500, 1 mounting kit, type ASK351 and 1 auxiliary switch with potentiometer, type ASZ74 The actuator, butterfly valve, mounting kit and accessories are packed separately and delivered as individual items Equipment combinations Butterfly valves SQL3500 SQL8500 Electromotoric actuator Mounting kit VKF4640 * ASK351 VKF4650 * VKF4665 * VKF4680 * ASK352 VKF46100 * VKF46125 * VKF46150 VKF46200 VKF46250 VKF46300 VKF46350 VKF46400 Direct mounting * VKF45 butterfly valves which have already been installed, require an ASK35 mounting kit with an SQL3500 or SQL8500 actuator Function / mechanical design The actuator is driven by a 3-position signal from the controller and generates a rotary motion which is transferred via a driver to the valve SQL35/85 These electromotoric actuators require no maintenance They have a reversible synchronous motor and reduction gears with self-lubricating sinter bearings «AUTO» and «MAN» modes can be selected with a rotary selector on the housing base When the selector is set to «MAN», the butterfly valve can be operated with a manual lever For manual operation, the angle of rotation is mechanically limited by an end stop 2/10 HVAC Products 10012005
Rotary «AUTO» / «MAN» selector Manual lever Yoke Terminal strip Double end switch * Plug for reversing direction of rotation * Always factory-installed Accessories SQL35/85 ASC95 Auxiliary switch ASC94 Double auxiliary switch ASZ74 Auxiliary switch and potentiometer 1000 Ω 4554Z04 4554Z06 4554Z05 SQL36E These electromotoric actuators require no maintenance They have a reversible asynchronous motor which drives the main shaft via spur gears and a self-locking worm gear, which accommodates the rectangular shaft of the butterfly valve The worm shaft is fitted with a direct-acting manual adjuster The actuators are supplied with a 90 angle of rotation suitable for use with Siemens butterfly valves During automatic operation, rotation is limited by two built-in endswitches The direction of rotation of the actuator can be reversed (refer to «Commissioning») To prevent the temperature inside the housing from falling below the dewpoint temperature, the actuators are supplied with a built-in heating element (AC 230 V, power consumption 5 W) 4505Z34 4505Z09 Position indication Terminal compartment Motor Manual adjuster Position indication Terminal strips HVAC Products 10012005 3/10
Accessories ASC36 Auxiliary switch SEZ311 Auxiliary module 4505Z10 4505Z19 ASZ36 Potentiometer 1000 Ω In the presence of a 3-position signal, the auxiliary module pulses the actuator The output shaft rotates by approximately 2 with each pulse The pulse-to-pause ratio is continuously adjustable and can therefore be used to achieve running times from 30 to 180 s (for ) or 60 360 s (for ) for an angle of rotation of 90 4505Z28 Engineering notes Butterfly valves (refer to Data Sheet N4136) Admissible ambient temperatures (refer to «Technical data») Electrical installation! The actuators must be electrically connected in accordance with local regulations and with the connection diagrams Regulations and requirements to ensure the safety of people and property must be observed at all times Mounting notes Overview of Mounting Instructions Type reference Mounting Instructions Type reference Mounting Instructions SQL35/85 74 319 0215 0 SQL36E 74 319 0440 0 ASC94 4 319 5537 0 ASC36 74 319 0442 0 ASC95 4 319 5557 0 ASZ36 74 319 0441 0 ASZ74 4 319 5538 0 SEZ311 74 319 0443 0 SQL35/85 SQL36E These actuators must be used with an ASK351 or ASK352 mounting kit These actuators are mounted directly on type VKF46 butterfly valves Valve, actuator and mounting kit are packed separately The valve and actuator can be assembled straightforwardly on site There is no need for special tools Take care to install the valve the right way up Refer to the Mounting Instructions for the valve concerned Orientation 90 90 4716Z16 4/10 HVAC Products 10012005
Commissioning notes When commissioning the complete motorized valve consisting of actuator, mounting kit and butterfly valve, always check the wiring and test the functions This also applies to any additional components fitted (eg auxiliary switch or potentiometer) If an SEZ311 auxiliary module is used, the required positioning time must be set (in the range 30 180 s for, or 60 360 s for ) VKF46 butterfly valves can only be commissioned with an SQL35/85 or SQL36E actuator or with an ASK46 manual adjuster fitted The flow rate is adjusted either by driving the electric actuators as required, or by operating the manual adjuster Operating mode SQL35/85 For automatic operation, the rotary selector must be set to «AUTO» «AUTO» = automatic operation «MAN» = manual operation SQL36E Warning In the case of the SQL36E, the manual adjuster is always engaged and cannot be mechanical disconnected To avoid pressure shocks on the butterfly, the VKF46 must be driven to its fully open position (either manually or via positioning signal ) prior to activating the pump(s) Direction of rotation SQL35/85 The actuators are factory-set to rotate in clockwise direction for opening (as seen from the cover) Position indication Butterfly valve in «OPEN» position The adhesive labels supplied must be applied during assembly Butterly valve in «CLOSED» position Reversing the direction of rotation SQL35/85 The direction of rotation can be reversed by repositioning a connector located under the cover The wiring for the OPEN and CLOSE control signal is not affected Direction of rotation reversed HVAC Products 10012005 5/10
Direction of rotation SQL36E The direction of rotation of these 2 types of actuators for opening is counterclockwise 90 ZU / CLOSED ZU / CLOSED 4505Z03 Reversing the direction of rotation SQL36E Setting the angle of rotation If the direction of rotation needs reversing, simply change the connections / The 090 angle of rotation for the end switches is factory-set and cannot be changed The potential-free auxiliary switches have adjustable switching points Control Every actuator must be driven by a dedicated controller (refer to «Connection diagrams») Maintenance notes The actuators and butterfly valves require no maintenance When servicing the valve and/or actuator: Switch off the pump and turn off the power supply, close the main shutoff valves in the pipework, release pressure in the pipes and allow them to cool down completely If necessary, disconnect electrical connections from terminals The valve must be recommissioned with the actuator (or manual adjuster) correctly mounted Disposal The actuator contains electrical and electronic components and must not be disposed of together with domestic waste Legislation may demand special handling of certain components, or it may be sensible from an ecological point of view Current local legislation must be observed Warranty The technical data given for these applications is valid only in conjunction with the Siemens butterfly valves as detailed under «Equipment combinations» The use of third-party valves other than those recommended by Siemens invalidates the warranty 6/10 HVAC Products 10012005
Technical data SQL35 SQL85 Power supply Operating voltage AC 230 V AC 24 V AC 230 V AC 230 V ±15 % ±20 % 5 / +10 % 5 / +10 % Frequency 50 / 60 Hz Power consumption 1) 65 VA 160 VA 235 VA Control Control signal 3-position Parallel operation of several not possible actuators Operating data Positioning time for 90 at 50 Hz 125 s 6 s 2) 12 s 3) at 60 Hz 105 s 5 s 10 s Angle of rotation (factory setting) 90 ± 1 Torque 1) 40 Nm 100 Nm 400 Nm Industry standards End switch Switching capacity Switching differential AC 250 V, 3 A resistive, 15 A inductive approx 1 Heating element - AC 230 V, 5 W Perm temperature of medium in assembled valve 120 C Meets the requirements for CE marking in EMC directive Low-voltage directive Housing protection standard IP 44 to IEC 60529 / DIN 40050 89/336/EEC 73/23/EEC IP 67 to IEC 60529 / DIN 40050 Dimensions / weight Dimensions see «Dimensions» Cable glands 4 x 205 mm (for M20) 2 x M20 Weight 14 kg 70 kg 138 kg Materials Housing base and yoke die-cast aluminium Cover plastic die-cast aluminium 1) 2) 3) These values apply at nominal voltage, at an ambient temperature of 20 C and at the specified nominal running time With SEZ311 auxiliary module: variable positioning time 30 180 s With SEZ311 auxiliary module: variable positioning time 60 360 s SQL35/85 accessories Double auxiliary switch ASC95 / ASC94 Auxiliary switch with potentiometer ASZ74 Switching capacity Switching differential Switching capacity Switching differential Change in resistance AC 250 V, 10 A resistive, 3 A inductive approx 1 AC 250 V, 10 A resistive, 3 A inductive approx 1 01 000 Ω corresponding to 090 Weight ASC94 85 g ASC95 30 g 60 g SQL36E accessories Double auxiliary switch ASC36 Switching capacity Switching differential AC 250 V, 3 A resistive, 15 A inductive approx 1 Weight Potentiometer ASZ36 Change in resistance 01 000 Ω corresponding to 090 50 g Auxiliary module SEZ311 Positioning time for 90 at 50 Hz 60 g 30180 s 60 g HVAC Products 10012005 7/10
General ambient conditions Operation SQL35/85 IEC 721-3-3 Operation SQL36E IEC 721-3-4 Transport IEC 721-3-2 Storage IEC 721-3-1 Environmental conditions Class 3K5 Class 4K2 Class 2K3 Class 1K3 Temperature 15+55 C 33+40 C 30+65 C 15+55 C Humidity 595 % rh 15100 % rh < 95 % rh 095 % rh Internal diagrams SQL3500 SQL8500 S1 S2 S3 S4 S7 H AC 230 V ASC36 End switch CLOSED End switch OPEN Auxiliary switch CLOSED (ASC36) Auxiliary switch OPEN (ASC36) Thermal switch (integrated) Heating element SEZ311 max AC 250V 3A (1,5A) AC 230 V P1 T1 N Cm1 End switch Cm2 End switch c1 1 auxiliary switch ASC95 or c1, c2 1 double auxiliary switch ASC94 or c1, 1000 Ω 1 built-in unit ASZ74 (1 auxiliary switch and 1 potentiometer) N Neutral conductor G System potential Control phase OPEN Control phase CLOSED 11 Sequence at 90 12 Sequence at 0 ASZ36 1000 Ω Potentiometer (ASZ36) Auxiliary module (SEZ311) Control phase OPEN Control phase CLOSED Neutral conductor H AC 230 V P = 5 W 4505G01 8/10 HVAC Products 10012005
Connection diagrams SQL35 SQL36 L (L) (L) 4505A01 Q1 Q2 Q1 Q2 (N) () () N1 (N) () () N2 AC 230 V N N N N1, N2 Controller, Actuator L System potential AC 230 V N System neutral Q1, Q2 Controller contacts SQL85 SP 4505A02 (G) (G) Q1 Q2 Q1 Q2 (G0) () () N1 (G0) () () N2 AC 24 V G G SN N1, N2 Controller, Actuator SP System potential AC 24 V SN System neutral Q1, Q2 Controller contacts HVAC Products 10012005 9/10
Dimensions Dimensions in mm SQL35/85 * Mounting height of actuator including ASK35 mounting kit = 168 mm > 100 mm: Minimum clearance from wall or ceiling > 200 mm: For mounting, connection, operation, service, etc 4505M02 Overall height of actuator 10/10 = Valve installation height from middle of pipe + Mounting height of actuator including mounting kit + Minimum clearance from ceiling or wall for mounting, connection, operation, service, etc 2005 Siemens Switzerland Ltd Subject to alteration HVAC Products 10012005