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M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators
Installation Guide
M9204-BUA-2, M9204-BUB-2,
M9204-BGA-2, M9204-BGB-2
M9204-BUA-2Z, M9204-BUB-2Z
Applications
The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators are direct-mount actuators that operate on
AC 24 V power at 50/60 Hz, DC 24 V power, or AC 85 to 264 V power at 50/60 Hz. These bidirectional actuators
do not require a damper linkage, and are easily installed on round shafts from
1/4 to 1/2 in. (6 to 12 mm) or square shafts from
1/4 to 5/16 in. (6 to 8 mm) using the standard shaft clamp included with the actuator.
A single M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuator provides 35 lb·in. (4 N·m) running and
spring return torque. An integral line voltage auxiliary switch, available only on the M9204-xxB-2(Z) models,
indicates end-stop position, or performs switching functions within the selected rotation range.
IMPORTANT: Use this M9204-Bxx-2(Z) Series
On/Off Electric Spring Return Actuator only to control equipment under normal operating conditions. Where
failure or malfunction of the actuator could lead to personal injury or property damage to the controlled
equipment or other property, additional precautions must be designed into the control system. Incorporate and
maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or
protect against failure or malfunction of the actuator.
IMPORTANT : Utiliser ce M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuator uniquement pour
commander des équipements dans des conditions normales de fonctionnement. Lorsqu'une défaillance ou un
dysfonctionnement du actuator risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou
un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection
supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes
de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou
de protection en cas de défaillance ou de dysfonctionnement du actuator.
Installation
The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators mount directly to the surface in any
convenient orientation using two No. M3.5 x 9.5 mm self-drilling sheet metal screws and the anti-rotation bracket
(parts included with the actuator). No additional linkages or couplers are required. Electrical connections are
color-coded and identified with numbers permanently marked on the actuator cable. A tag on the actuator cable
identifies the electrical connections and wiring details are included on the actuator housing.
IMPORTANT: Do not install or use this M9204-Bxx-2 Series On/Off Electric Spring Return Actuator in or near
environments where corrosive substances or vapors could be present. Exposure of the electric actuator to
corrosive environments may damage the internal components of the device, and will void the warranty.
Parts included
•
M9204-Bxx-2(Z) actuator
•
M9203-603 adjustable stop kit
•
M9000-604 anti-rotation bracket with two No. M3.5 x 9.5 mm, pan-head, cross-recessed (Phillips), self-drilling
and self-tapping screws
M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators
Installation Guide
1
*34179124G*
Part No. 34-1791-24, Rev. G
December 2020
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Table of Contents
Related Manuals for Johnson Controls M9204-B 2Z Series
Summary of Contents for Johnson Controls M9204-B 2Z Series
- Page 1 *34179124G* M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide M9204-BUA-2, M9204-BUB-2, Part No. 34-1791-24, Rev. G M9204-BGA-2, M9204-BGB-2 December 2020 M9204-BUA-2Z, M9204-BUB-2Z Applications The M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators are direct-mount actuators that operate on AC 24 V power at 50/60 Hz, DC 24 V power, or AC 85 to 264 V power at 50/60 Hz. These bidirectional actuators do not require a damper linkage, and are easily installed on round shafts from 1/4 to 1/2 in.
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Page 2: Special Tools Needed
Special tools needed • 10 mm wrench/socket • drill with Phillips bit, driver size 1 Dimensions 3-15/16 2-1/4 (82) (57.5) 45/64 15/64 (18) 25/32 10 30 10 30 (20) 6-3/8 (162) 4-55/64 4-15/64 (123.6) (107.5) 5/16 (8) Slot Length 1/4 (6.5) Slot Width 47/64 (18.7) 1-35/64... - Page 3 Code number Description DMPR-KC003 7 in. (178 mm) blade pin extension (without bracket) for Johnson Controls® direct-mount damper applications (quantity 1) Note: Available with damper and may be ordered separately Weathershield kit for damper application of M9204, M9308, and M9310 Series Electric Actuators (quantity...
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Page 4: Counterclockwise (Ccw) Spring Return Direction - Clockwise (Cw) Powered Operation
Counterclockwise (CCW) spring return direction – clockwise (CW) powered operation For CCW spring return direction, mount the actuator to the damper shaft so that side A of the actuator is away from the damper as illustrated in Figure 2. With power applied, the actuator drives CW from the 0° position and spring returns CCW. -
Page 5: Mounting The Actuator
If the damper shaft extends less than 0.79 in. (20 mm), a shaft extension is required to mount the actuator. Figure 4: Changing the coupler position To change the coupler’s position, see Figure 4 and proceed as follows: 1. Mount the coupler on either Side A or Side B of the actuator as determined by the shaft length. 2. - Page 6 3-1/4 2-1/4 (82.5) (57.5) Self-Drilling Sheet Metal Screws (2) Anti-Rotation Bracket Damper Frame Figure 6: Anti-rotation mounting bracket 4. Secure the anti-rotation bracket to the damper frame or duct using the two No. M3.5 x 9.5 mm self-drilling sheet metal screws provided. IMPORTANT: Do not overtighten the mounting screws to avoid stripping the threads.
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Page 7: Control Wiring
2. Position the stroke-limiting stop in the serrated slot with its leading edge at the scale position matching the desired stroke. 3. The product label marks hole positions for the M3-0.5 x 8 mm self-tapping screw provided with the adjustable stop kit. - Page 8 BLK/ BLK/ BLK/ Figure 10: Auxiliary switch wiring diagram WARNING: Risk of Electric Shock. Disconnect or isolate all power supplies before making electrical connections. More than one disconnection or isolation may be required to completely de-energize equipment. Contact with components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death.
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Page 9: Using Conduit
Using conduit All M9204-xxx-2(Z) Series Actuators accept 1/2 in. threaded electrician’s fittings. Figure 11: Adding flexible metal conduit 1. Feed the actuator cables through the field supplied electrician’s fittings and conduit. 2. Thread the electrician’s fitting into the actuator and secure the conduit to the fitting in accordance with local building code requirements. -
Page 10: Repair Information
A number of replacement parts are available; see Table 1 for more details. If an M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuator fails to operate within its specifications, replace the unit. For a replacement electric actuator, contact the nearest Johnson Controls representative. M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide... -
Page 11: Technical Specifications
Technical specifications M9204-Bxx-2(Z) Series On/Off Electric Spring Return Actuators (Part 1 of 2 ) Power -BGx-2 models AC 24 V (AC 19.2 V to 28.8 V) at 50/60 Hz: Class 2 (North America) or Safety requirements Extra-Low Voltage (SELV) (Europe), 5 VA running, 1.6 VA holding position DC 24 V (DC 21.6 V to 28.8 V): Class 2 (North America) or SELV (Europe), 2.8 W running, 0.8 W holding position Minimum transformer size: 6 VA per actuator... - Page 12 The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls shall not be liable for damages resulting from misapplication or misuse of its products.