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1 Scope

These Application Notes are a guide to applying the  
G122-829A001 P-

I

 Servoamplifier. These Application Notes 

can be used to:

 

Determine the closed loop structure for your application.

 

Select the G122-829A001 for your application. Refer also 
to data sheet G122-829.

 

Use these Application Notes to determine your system 
configuration.

 

 Draw your wiring diagram.

 

Install and commission your system.

Aspects, such as hydraulic design, actuator selection, feedback 
transducer selection, performance estimation, etc. are not 
covered by these Application Notes. The G122-202 Application 
Notes (part no C31015) cover some of these aspects. Moog 
Application Engineers can provide more detailed assistance, 
if required.

2 Description

The G122-829A001 is a general purpose, user configurable, 
P-

I

 servoamplifier. Selector switches inside the amplifier enable 

either proportional control, integral control, or both to be 
selected. Many aspects of the amplifier’s characteristics can 
be adjusted with front panel pots or selected with internal 
switches. This enables one amplifier to be used in many 
different applications. Refer also to data sheet G122-829.

3 Installation

3.1 Placement

A horizontal DIN rail, mounted on the vertical rear surface 
of an industrial steel enclosure, is the intended method of 
mounting. The rail release clip of the G122-829A001 should 
face down, so the front panel and terminal identifications 
are readable and so the internal electronics receive a cooling 
airflow.

An important consideration for the placement of the module 
is electro magnetic interference (EMI) from other equipment 
in the enclosure. For instance, VF and AC servo drives 
can produce high levels of EMI. Always check the 
EMC compliance of other equipment before placing  
the G122-829A001 close by.

3.2 Cooling

Vents in the top and bottom sides of the G122-829A001 case 
provide cooling for the electronics inside. These vents should 
be left clear. It is important to ensure that equipment below 
does not produce hot exhaust air that heats up the G122-829.

P-

I

 Servoamplifier

G122-829A001

MOOG

1

2

3

4

9

10 11 12

5

6

7

8

13 14 15 16

32

31

30

29

24

23

22

21

28

27

26

25

20

19

18

17

feedback

valve

enable

dither

Vs

in posn.

P

I

inp.1

scale

gain
gain
bias

controller

gain
zero

Bottom

vents

Cooling 

airflow

release

Screw

terminals

Top vents

Screw

terminals

DIN rail

17 - 32

1 - 16

clip

Cover

release

tab (4)

DIN rail

Application Notes

Page 1 of 6: C70861 Rev E – 07.14

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