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• The floating/2-position run mode ("Dir" for CCW-closing
dampers or "Rev" for CW-closing dampers).
FLOATING/2-POSITION
Dir
Service/Off
Rev
Fig. 2. Function Selection Switch.
Power-Off Behavior
If power is removed, the shaft adapter remains in position.
Service/Off
If the function selection switch is set to the "Service/Off"
position, then all rotary movement is cancelled, and all control
signals are ignored, thus allowing the actuator to be manually
operated safely.
Floating/2-Position Run Mode
If the function selection switch has been set to one of the two
floating/2-position control settings—and if the actuator is wired
correspondingly (see Figures 7 through 9)—then as soon as
operating power is applied, the shaft adapter will run according
to the control signals applied.
Table 1 describes the behavior ("stops," rotates "CCW," or
rotates "CW") of the MN6105/MN6110 in dependence upon the
control signals (switch "open" or "24 Vac/dc") applied to
terminals 3 and 4, the function selection switch setting, and the
manner in which the actuator is wired (either for floating mode:
see Fig. 7; or for 2-position mode: See Fig. 8).
Table 1. Behavior of MN6105/MN6110.
Control Signal At:
Wiring
Term 3
Term 4
Float
Open
Open
Open
24 Vac/Vdc
24 Vac/Vdc Open
2-Pos. 24 Vac/Vdc Open
24 Vac/Vdc 24 Vac/Vdc
MANUAL ADJUSTMENT
IMPORTANT
To prevent equipment damage, before manual adjust-
ment, you must remove power or set the function
selection switch to the "Service/Off" position.
After removing power or setting the function selection switch to
the "Service/Off" position, the gear train can be disengaged
using the declutch button, permitting the shaft adapter to be
manually rotated to any position.
SERVICE/OFF
Dir
Service/Off
Rev
M23105
Switch Setting:
Dir
Service/Off Rev
Stops Stops
Stops
CCW Stops
CW
CW
Stops
CCW
CW
Stops
CCW
CCW Stops
CW
Limitation of Rotation Stroke
Two adjustable mechanical end limits are provided to limit the
angle of rotation as desired (See Fig. 3). The mechanical end
limits must be securely fastened in place.
Fig. 3. Mechanical End Limits
To ensure tight closing of the dampers, the shaft adapter has a
total rotation stroke of 95°.
INTERNAL END SWITCHES
The internal end switches "A" and "B" are changeover switches
which are activated when the shaft adapter moves past a
position of 5° and 85°, respectively (See Table 3).
CHANGEOVER SWITCH A
ACTIVATED WHEN SHAFT
ADAPTER MOVES PAST 5
-2.5°
0°
5°
10°
Fig. 4. Internal End Switch Triggering Points.
INSTALLATION
CAUTION
To avoid personal injury (electrical shock) and to
prevent equipment damage, before installation, you
must remove power.
These actuators are designed for single-point mounting.
Mounting Instructions
All information and steps are included in the Installation
Instructions (See form no. 62-0224) supplied with each
actuator.
3
5 NM, 10 NM SERIES
M23094
CHANGEOVER SWITCH B
ACTIVATED WHEN SHAFT
°
ADAPTER MOVES PAST 85
15°
75°
80°
85°
°
90°
92.5°
M23106
63-2632—03
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