MHM5
PROFIBUS ABSOLUTE MULTI-TURN ENCODER, MHM510-PROF RANGE
ELECTRICAL DATA
Interface ISO 11898 Power consumption max 2,5W
Transmission rate Max 12 MBauds Step Frequency LSB 800 kHz
Device addressing by rotary switches Accuracy + ½ LSB
Power supply 10 – 30Vdc EMC EN 61000-6-4 EN 61000-6-2
Current consumption max 100mA (24Vdc) Electrical lifetime > 10
5
h
PROGRAMMABLE PARAMETERS
The Profibus-DP interface supports CLASS 1 and CLASS 2 functionality according to the encoder profile . In addition to these
functions the GSD-file supports further features, for example software limit switches. Further more, the following encoder parameters
can be programmed directly via the Profibus-DP network without any extra device
Counting Direction
This parameter counting direction defines whether the output code increases or decreases
when the shaft rotates clockwise.
Resolution
(positions per turns)
The parameter ‘resolution per revolution’ is used to program the desired number of steps per
revolution. Each value between 1 and the physical resolution per revolution can be
programmed
Total Resolution
“Max-RANGE“
This parameter is used to program the desired number of measuring units over the total
measuring range. This value may not exceed the total physical resolution of the absolute rotary
encoder
Reset (RAX)
The preset value is the desired position value, which should be reached at a certain physical
position of the axis. The position value is set to the desired process value by the parameter preset
Velocity
The implemented software can additionally deliver the current velocity. This value is transmitted
in binary code, 16 Bit, in addition to the process value
It is possible to choose between four different units: steps per 10 ms, per 100 ms, per 1000 ms and
revolutions per minute
Software limit switches function
Two software limit switches can be set. If the position value falls below the lower or exceeds the
higher limit switch, a status bit in the process value is set
Teach-in
(Online parameterization)
A special mode is available for commissioning phase of the device. This makes it possible to
change parameters while the encoder is in data exchange mode
INTERFACE
The rotary encoder is connected by two or three cables, depending on whether the power supply is
integrated into the bus cable or connected separately. If the power supply is integrated into the bus
cable one of the cable glands can be fitted with a plug. The cable glands are suitable for cable
diameters from 6.5 up to 9 mm
The Profibus-DP device address is set by user-friendly rotary switches in the connection cap. Allowed
addresses are between 1 and 99, each can only be used once. The connection cap can easily be
opened for installation by removing the two cap screws
Termination resistors are integrated in the connection cap. These must be switched on if the encoder is
connected at the end or the beginning of the bus
BEI Sensors SAS
Espace Européen de l’Entreprise
9, rue de Copenhague
B.P. 70044 Schiltigheim
F 67013 Strasbourg Cedex
Tél : +33 (0)3 88 20 80 80
Fax : +33 (0)3 88 20 87 87
Mail : info@beisensors.com
Web :
www.beisensors.com
ORDERING REFERENCE Contact the factory for special versions, ex: electronics, special flanges, connections…)
MHM5 DP C1 B 12 13 C 10 0 H3P
Absolute multi
turn encoder
Profibus Version
Code :
Binary
Number of
turns
2
12
(4 096)
Resolution
(pos./turn)
2
13
(8 192)
Clamp
Flange
Shat
diameter :
10mm
Without
mechanical
option
Connection
Cap
Note: The ‘’H3P’’ terminal box version is shorter than the ‘’0CC’’ one.
Cha
nges possible without further notice - Version 100629
