Use. Functions. OpenAir TM. Linear version, modulating, AC 24 V

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1 4 666 OpenAir TM Air damper actuators Linear version, modulating, AC 24 V GBB Electromotive linear actuators, DC V modulating control signal, nominal force 440 N, operating voltage AC 24 V, feedback signal DC V for position indication, nominal travel 70 mm, pre-wired with 0.9 m long connection cables. Type-specific variations with adjustable control signal for offset and span and/or with adjustable auxiliary switches for supplementary functions. Use To control rotary and linear air dampers in ventilating and air conditioning plants using a nominal force of 440 N for damper surfaces up to 4 m 2, friction-dependent. to connect a controller with a DC V modulating output signal. Functions Basic functions Linear movement Position indication Manual override with no voltage present The linear movement travel switch allows for inward or outward travel of the push rod. As soon as an input signal (> 0 V) is applied, the push rod starts to move. If the control signal is maintained at a constant value, the actuator remains in the current position. If the control signal is interrupted, but not the operating voltage, the push rod drives to the zero position. If the operating voltage is interrupted, the actuator remains in its current position, but the holding force is reduced. A linear movement that is proportional to the output voltage of DC V is generated. To manually adjust the push rod, the gear train must be disengaged by pushing the button "PUSH". Refer to "Setting and operational elements" in the chapter "Mechanical design". Siemens Building Technologies CM2N4666E / Landis & Staefa Division 1/10

2 Type-specific functions Adjustable control signal (Operating function) Adjustable auxiliary switches The offset and span for the linear movement ( mm) can be adjusted using two potentiometers (refer to "Technical design"). For example, actuators featuring this function can be used for the following applications: dampers with linear limitation, for instance in the span of mm, can be controlled using the entire control signal span of DC V. as sequence positioner in control circuits featuring only a DC V control signal to control more than one sequence. with control systems featuring a control signal deviating from the normal DC V, e.g., DC V. Auxiliary switches provide supplementary functions. The switching points for switches A and B (one changeover switch each) can be set independently in increments of 4 mm within the mm linear span. Refer to "Technical design", "Commissioning notes", and "Internal diagram". Summary of types AC 24 V Operating voltage Control signal Standard application (Offset and span not adjustable) Application with adjustable control signal (For offset and span) without auxiliary switch with 2 auxiliary switches without auxiliary switch with 2 auxiliary switches DC V GBB161.2E GBB166.2E GBB163.2E GBB164.2E Ordering The auxiliary switches cannot be integrated retroactively. For that reason, order the respective type that contains the desired option. Connection cables Accessories and spare parts The actuator comes with 0.9 m long pre-wired connection cables. The following accessories and spare parts are available for function upgrades of the actuators; see data sheet N4699: Accessories Rotary/linear set (with cardan joint) Rotary/linear set with mounting plate Weather shield ASK72.1 ASK72.2 ASK75.2 Equipment combination The actuator can be connected to all regulating and controlling devices that transmit a continuous DC V signal and adhere to all relevant safety rules and regulations. CM2N4666E / Siemens Building Technologies 2/10 Landis & Staefa Division

3 Technical design Motor technology Adjustable operating function (type-specific) The brushless DC motor provides accurate speed control and nominal force monitoring to protect the actuator and dampers. The DC V modulating control signal from a controllers controls the actuator. The linear movement is proportional to the control signal. Using the potentiometer "Uo", the offset of DC V can be set and, together with the potentiometer " U", the span of DC V can be set. Ys [%] 100 1) 4) 3) 2) 4637D04 2 U Y [V] Uw Uo U O U (max. 30 V) Ys Positioning span (100 % = 70 mm linear) Yu Control signal Uo Offset span U Span (for Ys = 100 %) Uw Effective span at Ymax = DC 10 V Uo U Examples of the diagram Control signal Pos. range Settings Y Ys Uo U 1) DC 0 2 V % DC 0 V DC 2 V 2) 3) DC 5 10 V DC 5 35 V DC 0 10 V DC 0 30 V 0 17 % % 0 33 % % DC 5 V DC 0 V DC 30 V DC 30 V 4) * DC 0 10 V % DC 0 V DC 10 V * Characteristic curve for factory setting or standard version 4637Z01 Example Formula Potentiometer settings Determine the span U if the actuator is to open from 0 50 % at a positioning signal of Y = DC 2 10 V. The offset span Uo is 2 V. Calculate the setting values for U: [ ] [ ] U = max. pos.rangeysmax % 100 % ( 10 [ V ] Uo [ V ]) ( ) Span Ys % = 10 V 2 V 16 V 50 % = Uo = 2 V ; U = 16 V Y S [%] D Y [V] Uo Umin U (16 V) Umax Umin = min. control signal (offset) Umax = max. control signal (end position) Siemens Building Technologies CM2N4666E / Landis & Staefa Division 3/10

4 Adjustable auxiliary switch (type-specific) The illustration below shows the adjustable switching values for auxiliary switches A and B in relation to the linear length. Factory setting position for the push rod +2 Push rod (Outward) 0...max. 75 mm Setting increments: 4 mm Switching hysteresis: 1 mm Adjustment span for switches A and B mm B mm A D01 A 48 Aux Switch 40 Adjustment B mm Z02 Note The setting shafts for the auxiliary switches turn together with the actuator. The scales are valid only for the zero position of the actuator with the linear travel "Outward". Mechanical design Basic components Housing Gear train Linear actuator pre-setting Manual adjustment Mechanical linear limitation Setting the linear direction Electrical connection Robust, lightweight all metal housing made from aluminum diecast which guarantees a long actuator life even under extreme ambient conditions. Maintenance-free and noise-free gear train with stall and overload protection for the life of the actuator. The push rod has a factory setting of + 2 mm which ensures a tight close-off for the air dampers. You can manually adjust the actuator by pushing the button "PUSH". The linear movement can be limited ba means of a linear/rotary set (see "Accessories"). The desired linear direction for the actuator can be set with the linear movement travel switch on the front of the actuator. All actuators come with pre-wired 0.9 m long connection cables. Type-specific elements Auxiliary switches Potentiometer for offset and span For supplementary functions, the auxiliary switches A and B can be adjusted on the actuator front. The two potentiometers responsible for the operating functions Uo and U can both be accessed on either side of the actuator front. CM2N4666E / Siemens Building Technologies 4/10 Landis & Staefa Division

5 Setting and operating elements Refer to "Technical design" and "Commissioning notes" in this data sheet. 1 2 A B PUSH U Uo Z01 1 Push rod: Outward Inward 2 Housing 3 Potentiometer to adjust the span 4 Potentiometer to adjust the offset span 5 Linear movement direction switch: outward/inward 6 Mounting bracket 7 Connection cable for power supply and control signal 8 Auxiliary switch connection cable 9 Gear train disengagement button 10,11 Adjustment dials for auxiliary switches A and B Engineering notes STOP Proper use The basic system data for the control systems in use contains all engineering notes. Read all the engineering notes before mounting, wiring, and commissioning the actuator. Pay special attention to all safety information and follow all hints and notes relating to control signals DC V. These actuators must be used in a system only for applications as described in the basic system data documents for the applied control systems. Additionally, all actuator specific features and rules must be observed as described in the brief description on the title page of this data sheet (bold print) and in the chapters "Use", "Engineering notes", and "Technical data". All paragraphs marked with the special warning triangle as illustrated on the left contain additional safety information and limitations that must be observed under any circumstances to avoid physical injuries or damages to. AC 24 V supply These actuators must only be used with safety extra-low voltage (SELV) or protection by extra-low voltage (PELV) in accordance with HD 384. Siemens Building Technologies CM2N4666E / Landis & Staefa Division 5/10

6 Auxiliary switches A,B Warning, maintenance Electric parallel connection of actuators Sizing transformers for AC 24 V Wiring and commissioning Setting values Use either line voltage or safety extra-low voltage for auxiliary switches A and B. Do not mix the two for operation. Howerver, operation using various phases is permissible. Do not open the actuator! The actuator is maintenance-free. Maintenance work may only be conducted by the manufacturer. Electric parallel connection for the same actuator types is admissible provided the operating voltage is within the required tolerance. Voltage drops at the feed lines must be included. A maximum of 10 actuators can be connected to the V controller outputs typical for LG. Use safety insulating transformers with double insulation in accordance with EN ; The transformers must be made for 100% runtime. Observe all local safety rules and regulations pertaining to sizing and protecting transformers. Determine the transformer s power consumption by adding the power consumption in VA for all actuators used. Refer to «Commissioning notes» and «Internal diagram» in this data sheet as well as to the HVAC job drawings. The setting values for the offset ( U) and positioning span (Uo) must be entered in the respective control diagrams. Mounting notes Mounting instructions Mounting position Housing protection Linear force support Actuator factory setting Manual override Mechanical limitation of linear movement All information and steps to properly prepare and mount the actuator are listed in the Mounting Instruction guide M4656 delivered with the actuator. Select the actuator mounting position so that the setting elements on the housing cover and the cable connections can be easily accessed. Refer to "Dimensions". In order to satisfy the requirements as per IP54, the following mounting conditions must be fulfilled: Mount the actuators only vertically (cabling see below) The actuator mounting angle may be a maximum of +/- 45. Use the ASK75.2 weather shield for mounting in any other position. Rotary damper application: To support the nominal force (max. 880 N), a stable support for the actuator in accordance with the Mounting instructions is required. Linear damper application: Fasten the actuator to the wall using 2 Taptite screws M6. The actuator comes with a push rod factory setting of + 2 mm which ensures a tight close-off for the air dampers. You can manually adjust the push rod by pushing the gear train disengagement button "PUSH". If necessary, you can limit the linear movement by selecting the relevant damper rod length or by using the linear/rotary set (refer to "Accessories"). CM2N4666E / Siemens Building Technologies 6/10 Landis & Staefa Division

7 Commissioning notes References Environmental conditions Mechanical check Electrical check Factory setting: linear movement travel switch Factory settings for auxiliary switches A and B (see "Technical design") All information necessary for commissioning is contained in the following: This data sheet 4666 Mounting instructions M4656 Job diagram Check to ensure that all permissible values as contained in "Technical data" are observed. Check for proper mounting and to ensure that all mechanical settings are in accordance with the plant-specific requirements. Additionally, ensure that the dampers are shut tight when in the closed position. Check the linear force support: The actuator's fastenings must be stable for the maximum possible tight close-off for the dampers. Manual damper adjustment: The push rod must be able to be moved when the gear train disengagement button "PUSH" is held down. Check to ensure that the cables are connected in accordance with the plant wiring diagram. The operating voltage AC 24 V (SELV/PELV) must be within the tolerance values. Functional check: The push rod must travel inward or outward (depending on the linear movement travel switch's setting) when the control signal DC 10 V is applied. The linear direction set using the travel switch must match the desired damper direction. After interrupting the AC 24 V operating voltage supply, the actuator stops. After interrupting the control signal, but maintained operating voltage, the actuator returns to the zero position. While the push rod travels inward or outward, the output voltage for the position indication must be DC V. Switch the auxiliary switch contacts "A" and "B" while the actuator reaches the respective switching positions. The switch is factory set for the linear travel direction "Outward". The auxiliary switches are factory set: Switch A: Switching point at 68 mm Switch B: Switching point at 4 mm To change the settings of A and B, use a flat blade screwdriver to turn the switch adjustment dials to the desired setting. Note Factory setting for the operating function The scale values in mm are valid only for the "0" position of the push rod (linear travel "Outward"). The potentiometers to adjust the offset as well as the span are set to the following values: Offset "Uo" = 0 V ; Span " U" = 10 V The desired values can be adjusted using a flat blade screwdriver in accordance with the information supplied in "Technical design". Siemens Building Technologies CM2N4666E / Landis & Staefa Division 7/10

8 Technical data Power supply AC 24 V Control signal input Operating function for GBB163.2E GBB164.2E Output signal for position indication Auxiliary switches for GBB164.2E GBB166.2E Operating voltage Safety extra-low voltage (SELV) or protection by extra-low voltage (PELV) as per Protection class Requirements for external safety insulating transformer (100% duty) to Feeder protection external Frequency Power consumption: running holding Input voltage (wires 8-2) Max. permissible input voltage Input resistance Neutral zone NZ (for non-adjustable operating function) Offset Uo (adjustable using a potentiometer) Span U for Ys = 100 % (adjustable using a potentiometer) Neutral zone NZ (for adjustable operating function) Output signal (wires 9-2) Output voltage (for Ys = %) Max. output current Protected against false connections Contact rating Life: 10 A resistive, 2 A inductive 5 A resistive, 1 A inductive no load Voltage Protection class Voltage proof auxiliary switch to housing Setting range for switchover contacts Setting increments Switching hysteresis Factory setting: Switch A Switch B AC 24 V + 20 % HD 384 III as per EN EN max. 10 A 50/60 Hz 4 VA/2 W 1.8 VA/1 W DC V DC 35 V >100 kω 200 mv DC V DC V 2 % of U DC V DC ± 1 ma max. AC 24 V 6 A resistive, 2 A inductive 10 4 switchings 5 x 10 4 switchings 10 6 switchings AC V II as per EN AC 4 kv mm 4 mm 1 mm 68 mm 4 mm Connection cables Power supply and signal line (wires ) Auxiliary switches (wires S1...S6) Permissible signal line length 4 x 0.75 mm 2 6 x 0.75 mm m Mechanical data Environtal conditions Nominal force minimum force (with operating voltage) minimum force (no operating voltage) maximum force Nominal travel maximum travel (mechanically limited) Runtime for nominal travel, motor operation Travel direction (determined by switch position) Mechanical life Actuator dimensions Weight Transport Climatic conditions Temperature Humidity (non-condensing) Mechanical conditions Operation Climatic conditions Mounting location Temperature Humidity (non-condensing) 440 N > 440 N > 130 N < 880 N 70 mm 75 mm 150 s mm/70 mm cycles refer to "Dimensions" 2 kg IEC Class 2K C < 95% r.h. Class 2M3 IEC Class 3K5 inside, weather-protected C < 95% r.h. IP-Code Housing type according to EN IP 54 - Conformity In accordance with the directives set forth by the European Union Electromagnetic compatibility (EMC) Low voltage directive 89/336/EEC 73/23/EEC CM2N4666E / Siemens Building Technologies 8/10 Landis & Staefa Division

9 Product standards Automatic electric regulating and controlling devices for residential use and other applications (Type 1) EN Electromagnetic compatibility Emissions Immunity EN EN Diagrams Internal diagram GBB161.2E GBB166.2E GBB163.2E GBB164.2E AC 24 V DC V AC 24 V V / 6 (2) A GBB16... GIB S1 S4 (G) (Y) 100% A M 0% (Q11) (Q21) (G0) (U) (Q12) (Q14) (Q22) (Q24) 4636G S2 S3 S5 S6 DC V B Cable labeling All wires are color-coded and labeled. Connection cable Wire labeling Designation Color L&G terminal code Actuators AC 24 V 1 System potential AC 24 V red G 2 System neutral black G0 8 Control signal DC V gray Y 9 Positioning indication DC V pink U Auxiliary switches S1 Switch A Input gray/red Q11 S2 Switch A Normally closed contact gray/blue Q12 S3 Switch A Normally open contact gray/pink Q14 S4 Switch B Input black/red Q21 S5 Switch B Normally closed contact black/blue Q22 S6 Switch B Normally open contact black/pink Q24 Connection diagram GBB161.2E GBB166.2E GBB163.2E GBB164.2E SP (G) (Y) (G0) N AC 24 V 1 8 S1 S4 GBB16... GIB16... SN 2 9 P S2 S3 S5 S6 Y 4636A01 N Controller or I/O unit Y Actuator GBB16... P Position indicator SP System potential SN System neutral Siemens Building Technologies CM2N4666E / Landis & Staefa Division 9/10

10 Dimensions 7, max ,5 10, ,4 6, , , S1...S6 900 min ø 5,7 Taptite M6 x 16 29,3 min. 60 min M01 Dimensions in mm 1999 Siemens Building Technologies Ltd. CM2N4666E / Siemens Building Technologies 10/10 Landis & Staefa Division

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