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Dodge Engineering & Controls, Inc.
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Installation
EN221 and EN310 Non-Spring Return Electronic Actuators
90
90
EA0676R1
PUSH
Figure 12.
4. Determine the angle of rotation for the damper
blade shaft. Subtract that amount from 90°.
5. Remove the shaft adapter and insert it with the
position indicator pointing to mark on the scale
calculated in the previous step. Figure 13.
calculated in the previous step. Figure 13.
90
90
EA0677R1
PUSH
ANGLE
OF
RO
TA
TIO
N
Figure 13.
6. Attach the clip.
7. Rotate the damper blade shaft to its "0" position.
8. Return the actuator to the damper shaft and
tighten the shaft adapter to the damper shaft.
Mounting for NEMA 2 Rating
< 90
< 90
90
NEMA 2
EA1152R1
Figure 14. Acceptable NEMA 2 Mounting Position
for Single and Tandem Applications.
Dual Auxiliary Switch (-S option)
A
-5
°
0
°
10
°
20
°
30
°
70
°
80
°
90
°
0
°
10
°
20
°
30
°
70
°
80
°
90
°
B
EA0413R2
Figure 15.
Actuator rotary range with the shaft adapter mounted at
position 0.
position 0.
Setting range for Switches A and B: 0 - 90°
Setting interval: 5°
Switching hysteresis: 2°
UL Doc. No. 129-272
EAI/EN-5
Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005