Baumer G2MMH Benutzerhandbuch

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G1MMH, G2MMH
Absolute Encoder – Proﬁbus

9-16

Assembly Instructions

Danger
Warnings of possible danger.

General instructions
Information on appropriate product handling.

General remarks

Additional information
The installation instruction is supplementary to already
existing documentation (e.g. catalog, data sheet, manual).

It is imperative to read the manual carefully prior to star-
ting the device.

Appropriate use

The encoder is a precision measuring device. It is ex-

plicitly designed for registration of angular positions
and revolutions as well as evaluation and supply of
measuring values as electric output signals for the sub-
sequently connected device. The encoder must not be
used for any other purpose.

Start up

Installation and assembly of the encoder only by electri-

cally skilled and qualiﬁed personnel.
Consider also the operation manual of the machine

manufacturer.

Safety instructions

All electrical connections are to be revised prior to star-

ting the system.
Incorrect assembly and electrical connections or any

other inappropriate work at encoder and system may
lead to malfunction or failure of the encoder.
Any risk of personal injury, damage of the system or

company equipment due to failure or malfunction of the
encoder has to be eliminated by corresponding safety
measures.
Do not operate encoder beyond the limit values stated

in the data sheet.

Any disregard may lead to malfunctions, material damage
and personal injury.

☞

All movable adjusting elements need tolerance in both
axial and radial direction in order to equalize shifts by tem-
perature and of mechanical nature. Tighten both ﬁxing and
clamp ring screws ﬁrmly.

Electrical installation

Do not modify encoder in any electrical way and carry

out any wiring work under power supply.
Any electrical connection and plugging-on whilst under

power supply is not permitted.
A separate encoder supply has to be provided with con-

sumers with high interference emission.
Installation of the whole system has to be according

to EMC standards. Installation environment as well as
wiring have an impact on the encoder’s EMC. Encoder
and supplying lines are to be in separated locations or
remote from lines with high interference emission (fre-
quency transformers, protections, etc.).
Encoder case and supply cable have to be completely

screened.
Ground (PE) encoder by using screened cables. The

braided shield has to be connected to cable gland or
plug. Grounding (PE) on both sides is recommended.
Ground the case by the mechanical assembly, if latter
is electrically isolated a second connection has to be
provided. Ground cable screen by the subsequently
connected devices.
In case of ground loop problems at least grounding on

one side is imperative.

Any disregard may lead to malfunctions, material damage
and personal injury.

☞

Electrical connection
The bus cover is to be stored and transported whilst in
the ESD bag only. The bus cover has to ﬁt the case tightly
and has to be ﬁrmly secured by screws.

Unscrew both ﬁxing screws of the bus cover.

Loosen both bus cover elements carefully and remove it in

axial direction.
Adjust participant address at the two decimal rotary

switches. The participant’s address for example 23.
For the last participant the terminators are to be swit-

ched “ON” by means of the 2-pin Dip switch (default
OFF).

Both ON = ﬁnal user
Both OFF = user X

Connection – cable gland (bus cover)

Unscrew cap nut of cable gland. Push cap nut and seal

insertion with contact sleeve onto the cable coat.
Strip isolation of cable coat and cores and cut shielding

foil, if any (picture).
Bend the braided shield for about 90°.

Push seal insertion with contact sleeve to the braided

shield. Push seal insertion together with contact slee-
veand cable precisely into the cable gland and secure
by cap nut.

Use cable gland no. 3 for supply only. Cable glands no.

1 and 2 are for optional use as bus lines. Consider the
permitted cable cross-section.
Use the shortest way to insert the cores into the termi-

nals and mind the maximum core cross-section.
Use

isolated core tip sleeves.

There must not be any crossing of data lines with lines

for power supply.

Core cross-section

cable

cap nut

wire

screen film

seal

screen

Single wire (rigid)

Max. 1.5 mm

Fine wire (ﬂexible)

Max. 1.0 mm

Fine wire (ﬂexible)

With isolated ferrule

max. 0.75 mm

Cable diameter
Cable gland 1, 2

5...9 mm

Cable gland 3

3...6 mm

Terminal assignment cable gland
A

Negative data line

Positive data line

Supply voltage 10...30 VDC

GND

Ground connection relating to UB

Terminals of the same signiﬁcance are internally con-
nected and identical in their functions. Max. load on the
internal terminal connections UB-UB and GND-GND is
1 A each.

Plug the bus cover carefully onto the D-SUB plug of the

basic encoder, then push it over the rubber seal. Avoid
the case getting wedged. The bus cover has to ﬁt tightly
the basic encoder.
Tighten both ﬁxing screws ﬁrmly and conformable.

An optimized connection between encoder case and

the braiding shield of the supply cable is only achieved
by a complete and close ﬁt of the bus cover onto the
basic encoder (interlock).

Starting torque
Terminal block/screw terminal max. 0.4 Nm
Screwing - bus cover M4 max. 1.9 Nm
Spring coupling mounting
M3 max. 1.2 Nm / M4 max. 1.9 Nm
Clamping ring mounting M5 max. 6 Nm

cable

wire

screen

cable

wire

screen

Bus cable

Supply voltage cable

Disposal
Encoder components are to be disposed of according to
the regulations prevailing in the respective country.

Transport and storing

In original packing only.

Do not drop or expose encoder to major shocks.

Assembly

Open clamping ring completely before mounting the

encoder.
Avoid punches or shocks on case and shaft.

Avoid case distortion.

Do not open or modify encoder in any mechanical way.

The spring arm of the spring coupling has to be free

movable.

Hollow shaft, bearing, glass disc or electronic
components might be damaged and a secure
operation is no longer guaranteed.

Hollow shaft mounting
Mounting with clamping ring
Plug encoder completely onto drive shaft (ISO-ﬁt g7).
Position of the clamping ring has to be set properly to the
hollow shaft slot (see drawing) and tighten clamping ring
ﬁrmly.

Mechanical assembly
Slide encoder onto the drive shaft and insert torque pin
into the adjusting element provided by customer or
insert pin into the mounted adusting part (with rubber
spring element) provided by customer.

x = 56.5 mm (G1) / x = 69.5 mm (G2)

Slide encoder onto the drive shaft and insert the extension screw or adjusting angle
provided by customer into the encoder´s rubber spring element.

Spring coupling
Fasten spring coupling at the ﬁxing holes provided on housing by means of screws.
Slide encoder onto the drive shaft and fasten spring coupling at the surface provided
with screws.

x = 50 mm (G1)
x = 127,75 mm (G2)

(9.5)

3.5

ø4 fg6

torque pin

adjustment
piece

rubber spring
element

20.5

±0.5

1.25

[ *
[ *

DLUJDS

M5 x 8

13.

+0.

6.6

0.3

M3x6

ø10 (3x)
ø4.3 (3x)

5 (2x)

14°

ø96 ±0.2

7°

120°

drive shaft

clamping ring

Dimensions
G1MMH

G2MMH

¡+¡+

0 [

14.5

57.5

7.5

13.5

ш76

120°

ш50.8H7

ш92.2

ш116

ш4fg6

103

ø13

7.5

M3 x 6

3.5

☞

green

red

green

red

GND

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