Product Overview

M9203-xxx-2(Z) Series Electric Spring Return Actuators Product Bulletin 3
The M9203-AGA-2 and M9203-AGA-2Z actuators
include plenum-rated cables and are specially
configured for installation in spaces used for
environmental air-handling purposes other than ducts
and plenums as specified in National Fire Protection
Association (NFPA) 70: National Electrical Code
section 300.22(C), Other Space Used for
Environmental Air. The space over a hung ceiling,
when used for environmental air handling purposes, is
an example of the type of space for which these
actuators are configured.
The M9203-AGx-2 actuators have 150 second
constant runtime for 90° rotation. The M9203-AGx-2Z
actuators have 90 second constant runtime for 90°
rotation. When combined with other actuators in a
control system, this choice provides flexibility in
synchronizing the movement of equipment driven from
a single proportional command.
M9203-Bxx-2(Z) Series On/Off Actuators
M9203-Bxx-2(Z) Series Actuators provide on/off control
of dampers requiring up to 27 lb·in. (3 N·m) in HVAC
systems. On/off control can be provided from a manual
switch, controller, auxiliary switch from a fan motor
contactor, or similar device.
Operation
M9203-xxx-2(Z) Series Actuators provide 95° of
rotation. A graduated scale from -5° to 90° and a
position indicator provide visual indication of stroke.
When power fails during service, the mechanical spring
return system provides rated torque to the connected
equipment, returning it to the home position.
M9203-GGx-2(Z) Series Proportional Actuators
M9203-GGx-2(Z) Series Actuators use a brushless DC
motor controlled by a microprocessor. The
microprocessor drives the motor at constant speed,
independent of torque. The microprocessor also
monitors the brushless DC motor’s rotation to prevent
damage to the actuator in a stall condition. The
actuator can be stalled anywhere within its rotation
range without the need for mechanical end switches.
Power consumption is reduced in the holding mode.
The M9203-GGB-2 and M9203-GGB-2Z models are
provided with one integrated, line-voltage-capable
auxiliary SPDT switch. The switch point is
independently and continuously adjustable throughout
the full range of actuator stroke. Auxiliary switches are
double-insulated so an electrical ground is not
required.
M9203-AGx-2(Z) Series On/Off and Floating
Point Actuators
M9203-AGx-2(Z) Series Actuators use a brushless DC
motor controlled by a microprocessor. The
microprocessor drives the motor at constant speed,
independent of torque. The microprocessor also
monitors the brushless DC motor's rotation to prevent
damage to the actuator in a stall condition. The
actuator can be stalled anywhere within its rotation
range without the need for mechanical end switches.
Power consumption is reduced in the holding mode.
The M9203-AGB-2 and M9203-AGB-2Z models are
provided with one integrated, line-voltage-capable
auxiliary SPDT switch. The switch point is
independently and continuously adjustable throughout
the full range of actuator stroke. Auxiliary switches are
double-insulated so an electrical ground is not
required.
M9203-Bxx-2(Z) Series On/Off Actuators
M9203-Bxx-2(Z) Series Actuators use a DC brush
motor controlled by analog electronics. The actuator
can be stalled anywhere within its rotation range
without the need for mechanical end switches. Power
consumption is reduced in the holding mode. Two
different voltage ratings are available for On/Off
Actuators:
• M9203-BGx-2: AC 24 V 50/60 Hz or
DC 24 V power
• M9203-BUx-2(Z): AC 85 to 264 V 50/60 Hz power
The M9203-BUx-2(Z) actuators are double-insulated
so an electrical ground is not required.
The M9203-BxB-2(Z) models are provided with one
integrated, line-voltage-capable auxiliary SPDT switch.
The switch point is independently and continuously
adjustable throughout the full range of actuator stroke.
Auxiliary switches are double-insulated so an electrical
ground is not required.