Description
The Johnson Controls M9124-GGC-2 is a direct-mount electric non-spring-return actuator - 210 lb·in (24 N·m), AC/DC 24 V, with proportional control, 0(2) to 10 VDC position feedback and two integral SPDT auxiliary switches.
Per Johnson Controls' selection chart, the M9124-GGC-2 takes a DC 0(2) to 10 V or DC 0(4) to 20 mA proportional input, carries 2-SPDT auxiliary switches, and returns DC 0(2) to 10 V feedback.
Published specification:
* Torque: 210 lb·in (24 N·m)
* Control input: DC 0(2) to 10 V or DC 0(4) to 20 mA proportional
* Feedback: DC 0(2) to 10 V
* Timing: 115 to 175 seconds
* Supply: AC 24 V 50/60 Hz or DC 24 V
* Power consumption: 6.5 VA
* Rotation range: 0 to 90°, mechanically adjustable in 5° increments
* Shaft: round up to 3/4 in. (20 mm) diameter, or square up to 5/8 in. (16 mm)
* Auxiliary switches: 2 SPDT, integral
* Ambient: -4 to 122°F (-20 to 50°C), 0 to 90% RH
This is the fully-equipped 210 lb·in modulating actuator. It follows a 0-10 V (or 2-10 V / 4-20 mA) command, reports position back on a 0-10 V line, and adds two switched contacts on top. Johnson Controls supplies the switches only on the -xxC models, and describes them as available "to indicate end-stop position or to perform switching functions at any angle within the selected rotation range." Typical uses are a hard interlock that will not let a fan start until the damper is proven open, or an alarm contact at a set angle - jobs you would otherwise do with an external limit switch bolted to the damper frame.
If you do not need switched contacts, the M9124-GGA-2 is the same actuator with the same torque, timing, input and feedback, for less.
Proportional, not adjustable-span. This model spreads its full travel across the whole signal range. It does not have adjustable start and span - that is the M9124-HGx. If you need to sequence two actuators from one control signal, one taking 0-5 V and the next 5-10 V, specify the H model instead.
In Johnson Controls' words, these are bidirectional actuators that "do not require a damper linkage, and are easily installed on a damper with a round shaft up to a 3/4 in. (20 mm) in diameter or a square shaft up to 5/8 in. (16 mm)." The series also has electronic stall detection, which the manufacturer describes as ensuring "higher reliability by deactivating the actuator motor when a stall condition is detected."
Tandem: Johnson Controls rates two -AGx, -GGx or -HGx models in tandem at twice the torque. A GGx pair is on that list, so 420 lb·in (48 N·m) from two M9124-GGC-2 units is a supported arrangement - ask us and we will confirm the tandem hardware.
Valve option: mounts to VG1000 Series ball valves and VG7000 Series globe valves using an M9000-5xx Valve Linkage Kit.
Non-spring return: holds its last position on loss of power. For outdoor air dampers in cold climates Johnson Controls recommends a spring-return actuator instead.
* Brand / Manufacturer: Johnson Controls
* Model / Part Number: M9124-GGC-2
* Series: M9124 Series electric non-spring-return actuators
* Torque: 210 lb·in (24 N·m)
* Control: Proportional, DC 0(2) to 10 V / 0(4) to 20 mA
* Feedback: DC 0(2) to 10 V
* Adjustable start & span: No - see the M9124-HGA-2
* Auxiliary switches: 2 SPDT
* Timing: 115 to 175 seconds
* Supply: AC/DC 24 V
* Spring return: No - holds last position
* Condition: New
We hold the M9102 through M9132 Series from 18 to 280 lb·in, plus brackets, linkages, jackshaft kits, tandem hardware and weather shields. Tell us the damper or valve, the torque and the control signal and we will match it from stock.
Johnson Controls / Johnson Controls
M9124-GGC-2 / M9124GGC2
M9124-GGC-2 / M9124GGC2
Warranty Information
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