M3100 | Lightbus incremental encoder interface

The M3100 module permits any incremental encoder to be connected to the Lightbus system. A 24 bit counter with a quadrature decoder and a 24 bit latch for the zero pulse can be read, set or enabled. The fibre optics connection of the Lightbus system allows the transducer values to be transmitted at high speed and without interference to a central device such as a PC, PLC or CNC within 25 µs. Up to 255 transducers can be interrogated over one Lightbus ring.

 

Features

• integration of all digital functions into a single LCA (logic cell array) circuit
• quadrature decoder with 1-, 2- and 4-fold evaluation
• 24 bit counter with 1 MHz frequency limit
• 24 bit latch for counter value at zero pulse
• read, set and activate commands for counter and zero-pulse registers via Lightbus system
• connection for 3-channel incremental transducer

Technical data	M3100
Fieldbus	Lightbus
Data transfer rates	2.5 Mbaud, 32 bits of process data in 25 µs
Encoder connection	A, A(inv), B, B(inv), zero, zero(inv), status
Encoder operating voltage	optionally 5 V DC/15 V DC
Counter	24 bits, binary
Limit frequency	1 MHz
Quadrature decoder	1-, 2-, or 4-fold evaluation
Zero-pulse latch	24 bits
Commands	read, set, enable
Supply voltage	24 V DC (-15 %/+20 %)
Current consumption	0.1 A (without sensor load current)
Housing form	die-cast aluminium (IP 65) with screw fastening
Dimensions (W x H x D)	80 mm x 175 mm x 52 mm
Operating/storage temperature	0…+55 °C/-25…+85 °C
Vibration/shock resistance	conforms to EN 60068-2-6/EN 60068-2-27/29
EMC immunity/emission	conforms to EN 61000-6-2/EN 61000-6-4
Protection class	IP 65

Ordering information	M3100-00x
M3100-000	standard version
M3100-001	version with additional enable input
M3100-002	version with cable entry from the side
M3100-003	version with additional enable input and cable entry from the side