Johnson Controls M9220-GGX-3 User's Manual | Page 8

Johnson Controls Automobile Parts User's Manual - M9220-GGX-3.
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M9220-GGx-3 Proportional Electric Spring Return Actuators Installation Instructions

8

Setup and Adjustments

Direction of Action
The M9220-GGx-3 Proportional Electric Spring Return 
Actuators are factory set for Direct Acting (DA) 
operation. In DA mode, applying an increasing input 
signal to the control input drives the actuator away from 
the spring return position. Reverse Acting (RA) 
operation is also available. In RA mode, applying an 
increasing input signal to the control input drives the 
actuator toward the spring return position. Figure 11 
and Figure 12 indicate how the drive direction for the 
actuator depends on the spring return direction and the 
position of the mode selection switch. 

Mode Selector Switch and CAL Function
The M9220-GGx-3 Proportional Electric Spring Return 
Actuators are factory set at Direct Acting (DA), DC 0 to 
10 V control input (Figure 12). To change to RA 
operation, move the mode selection switch from DA to 
RA. The DC input signal is selectable from 
DC 0 to 10 V or from DC 2 to 10 V, which corresponds 
to 0 to 95° rotation. If the rotation range is reduced, the 
end-stop is reached with a reduced input signal. For 
example, if a DC 0 to 10 V input signal is selected and 
the rotation range is limited to 75°, the end-stop is 
reached at DC 8.3 V. If an external 500 ohm resistor is 
placed across the input (see Figure 10), the switch 
positions then select between 0-20 mA or 4-20 mA.

The CAL function enables the actuator to redefine the 
selected control input range proportionally across a 
reduced rotation range. The actuator stores the 
reduced rotation range in nonvolatile memory (retains 
data when power is lost or removed).

To calibrate the control input range, proceed as follows:

1.

With power off, move the mode selection switch to 
the CAL position (Figure 12). Then, energize the 
actuator. The actuator automatically rotates until 
the end-stops are found, and proportionally 
reconfigures the control input range to the reduced 
rotation range.

2.

Return the mode selection switch to the desired 
selection (example: DA, 0 to 10 VDC control input). 

Note: During normal operation, if the actuator 
stroke increases due to seal or seat wear, the input 
is redefined to the increased rotation range in 
approximately 0.5° increments.

3.

If the actuator mounting position is changed or if 
the linkage is adjusted, repeat Steps 1 and 2 to 
reinitiate the CAL function.

Note: To repeat calibration with power applied, move 
the mode selection switch out of the CAL position for at 
least 2 seconds before returning it to the CAL position.  
Auto calibration begins 5 seconds after you return it to 
the CAL position.

Figure 11: Nominal Feedback Signal Relative to 

Rotation Position

A

B

Control Inputs

CCW Face

of Actuator

CW Face

of Actuator

DA

RA

DA

RA

Mode Selection

Switch Setting

Increasing Signal

Decreasing Signal

F

IG

:D

R

V

P

O

S

Rotation Position

0-10V

Direct

Acting

Reverse

Acting

0-10V

0° is the spring return position.

Feedback

Direction

0.0V  1.7V   3.3V  5.0V   6.7V  8.3V  10.0V

10.0V  8.3V  6.7V  5.0V   3.3V  1.7V   0.0V

2-10V

2.0V  3.3V   4.7V  6.0V   7.3V  8.7V  10.0V

2-10V

10.0V  8.7V  7.3V  6.0V   4.7V  3.3V   2.0V

Figure 12: Mode Selection

modes

el

Side A of Actuator

Side B of Actuator

RA

DA

DA

2-10

0-10

0-10

2-10

+

+

CAL

2-10

0-10

0-10

2-10

+

+

CAL

2-10

0-10

0-10

2-10

+

+

CAL

RA

0.549134s