Acvatix™ Rotary Actuator for Ball Valves Modbus RTU G..B111.9E/MO Rotary actuator for ball valves 10 Nm with Modbus communication ● ● ● ● ● ● ● ● GDB111.9E/MO with 5 Nm nominal torque GLB111.9E/MO with 10 Nm nominal torque Operating voltage AC 24 V For air-handling units (AHU) and other heating / cooling applications Modbus RTU communication UL listed For 2-port and 3-port control ball valves, internally threaded connections (VAI61.. and VBI61..) or externally threaded connections (VAG61.. and VBG61..
Functions Function Description Communication Modbus RTU (RS-485), galvanically separated Functions - Supported baudrates 9.6, 19.2, 38.4, 57.6, 78.4, 115.2 kbaud Supported transmission formats 1-8-E-1, 1-8-N-1-, 1-8-O-1, 1-8-N-2 Termination 120 Ω electronically switchable Supported Modbus function codes 03 Read Holding Registers, 04 Read Input Registers, 06 Write Single Register, 16 Write Multiple registers (max. 120 registers within one message) Setpoint 0..100%, Actual value for position 0..
Equipment combinations The rotary actuators are suitable for operation of the following Siemens ball valves: VA..61.. 2-port and VB..61.. 3-port control ball valves Control ball valves with: internal threads1) Rp external threads2) G..B ‒ ‒ VAG61.15.. G1B VAI61.15.. Rp ½“ ‒ ‒ VAI61.20.. Rp ¾” VAG61.20.. VAI61.25.. Rp 1” VAG61.25.. VAI61.32.. kvs [m3/h] DN G..B..9E.. pmax ps 1…6.3 15 0.25…10 15 G1¼B 4…10 20 G1½B 6.3…16 25 Rp 1¼” VAG61.32.. G2B 10…25 32 1000 VAI61.40..
HMI (Human-Machine Interface) For more detailed explanations on device states, functions and error display, cf. product documentation CE1Z4634 1).
Push-button addressing Display current address (digits in reverse order) The Modbus address can be set without a separate tool by using the push-button and LED. To display the current address, press button <1s. Colors 1-digits: red 10-digits: green 100-digits: orange Example for address 124: LED Note The address is entered and shown in reverse order. Set new address (digits in reverse order) 1. Enter addressing mode: press button > 1s until LED shines red, then release button (before LED gets dark). 2.
Modbus registers For a detailed description of specific functions please refer to the product documentation CE1Z4634 1). Reg. Name R/W Unit Scaling Range / enumeration Process Values 1 Setpoint RW % 0.01 0..100 2 Override control RW -- -- 0 = Off / 1 = Open / 2 = Close 3 = Stop / 4 = GoToMin / 5 = GoToMax 3 Actual position R % 0.01 256 Command RW -- 0..
Reg. Name R/W Scaling Range / enumeration Device information 1281 Factory Index R Two bytes, each coding an ASCII char. 00 5A 00 “Z” Device is of Series “Z” 1282 Factory Date HWord R Two bytes, the lower coding the Year (hex) Reg. 1282 = 000F/Reg. 1283 = 0418 1283 Factory Date LWord R High byte: month (hex) Low byte: day (hex) HWord LWord -- YY MM DD Hex 00 0F 04 18 Dec 00 15 04 24 Mfg.
Notes Safety Caution National safety regulations Failure to comply with national safety regulations may result in personal injury and property damage. ● Observe national provisions and comply with the appropriate safety regulations. Mounting ● Do not open the rotary actuators Mounting positions, cf. mounting instr. A6V10920701 1) 1) Related documents such as environmental declarations, CE declarations, etc., can be downloaded at the following internet address: http://siemens.
Commissioning Parameterization The following parameters must be checked or set prior to commissioning: Parameter Range Description Factory setting Opening direction CW (R) / CCW (L) Opening direction of rotary actuator CW (R) Commissioning workflow 1: Full or partial configuration by tool When using the AST20 handheld tool, all bus and actuator parameters can be set.
Maintenance The rotary actuators are maintenance-free. Disconnect the electrical connections from the terminals if you want to work at the device. Disposal The device is considered an electronics device for disposal in terms of European Directive 2012/19/EU and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations.
Technical data Power supply Operating voltage G..B111.9E/.. Frequency Power consumption AC 24 V ± 20 % (SELV) or AC 24 V class 2 (US) 50/60 Hz at 50 Hz Actuator holds 1 VA / 0.5 W Actuator rotates 3 VA / 2.5 W Function data Positioning time for nominal rotation angle G..B111.9E/.. Nominal / maximum torque GLB.. GDB..
Environmental conditions Applicable standard Operation Transport Storage IEC 60721-3-x Climatic conditions Class 3K6 Mounting location Indoors Temperature general -32…55 °C Humidity (non condensing) 5…95 % r. h. Climatic conditions Class 2K3 Temperature -25…70 °C Humidity 5...95 % r. h. Climatic conditions Class 1K3 Temperature -5…45 °C Humidity 5...95 % r. h.
Diagrams Internal diagrams The rotary actuators are supplied with a prewired connecting and communication cable. All interconnected devices must be connected to the same G0. Core desig.
Temperature adapter (optional) 70 162.8 42 64 23.5 Revision numbers Type Valid from rev. no. GLB111.9E/MO ..B GDB111.9E/MO ..C Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a 6300 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.com/buildingtechnologies Dokument-ID A6V10881143_en--_e Ausgabe 2021-06-17 © Siemens Switzerland Ltd, 2021 Technical specifications and availability subject to change without notice.
