KL6781 | Bus Terminal, 1-channel communication interface, M-Bus, master
+24 V DC
0 V
KL6781 | Bus Terminal, 1-channel communication interface, M-Bus, master
The KL6781 M-Bus master terminal enables the direct connection of M-Bus devices. The M-Bus (Meter Bus) is a fieldbus for the acquisition of consumption data from electricity, water, gas or energy meters. The KL6781 does not contain the M-Bus protocol; instead, it converts the data present on the terminal bus into M-Bus compliant physics. 24 byte data are available on the K-bus for this. In conjunction with the TwinCAT M-Bus library, it is possible to work without an external M-Bus gateway, i.e. the M-Bus devices can be connected directly to the KL6781. With a total cable length of 300 m, up to 40 M-Bus devices, so called standard loads, each with a current consumption of 1.5 mA can be connected.
Product status:
regular delivery
Product information
| Technical data | KL6781 |
|---|---|
| Technology | M-Bus |
| Data transfer standard | M-Bus physics |
| Data transfer channels | 1 |
| Number of devices | max. 40 standard loads, each with a current consumption of 1.5 mA |
| Transmission rate | 300…9600 baud (default 2400 baud) |
| Bus access | master-slave mode (polling) |
| Cable length | max. 300 m |
| Current consumption K-bus | typ. 65 mA |
| Current consumption power contacts | max. 250 mA |
| Short-circuit proof | yes |
| Electrical isolation | 500 V (K-bus/M-Bus) |
| Bit width in the process image | input/output: 24 bytes |
| Configuration | TwinCAT (M-Bus function blocks) |
| Nominal voltage | 24 V DC (-10%/+8%) |
| Input voltage | 24 V DC (-10%/+8%) |
| Special features | TwinCAT library: TwinCAT PLC M-Bus |
| Weight | approx. 60 g |
| Operating temperature | 0…55°C |
| Storage temperature | -25…+85°C |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/see documentation |
| Approvals/markings | CE, UL |
| Housing data | KL-12-8pin | KS-12-8pin |
|---|---|---|
| Design form | compact terminal housing with signal LEDs | terminal housing with pluggable wiring level |
| Material | polycarbonate | |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock | |
| Side by side mounting by means of | double slot and key connection | |
| Marking | labeling of the BZxxxx series | |
| Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver | |
| Connection cross-section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² | s*: 0.08…1.5 mm², st*: 0.08…1.5 mm², f*: 0.14…1.5 mm² |
| Connection cross-section AWG | s*: AWG28…14, st*: AWG28…14, f*: AWG26…16 | s*: AWG28…16, st*: AWG28…16, f*: AWG26…16 |
| Stripping length | 8…9 mm | 9…10 mm |
| Current load power contacts | Imax: 10 A | |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | |
*s: solid wire; st: stranded wire; f: with ferrule
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| Material compliance | KL6781 |
|---|---|
| REACH SVHC | no |
| POP | compliant |
| RoHS | compliant with exemption |
| RoHS exemption | 7c-I: Lead-containing electrical and electronic components in glass and ceramic materials, excluding dielectric ceramics in capacitors |
| China-RoHS | www.beckhoff.com/china-rohs-io |
| CA Prop65 | www.beckhoff.com/prop65 |
| Disclaimer | This statement and the information contained above are, to the best of our knowledge and belief, accurate, based on the information we have received from our suppliers. This information is in line with the current standard of technology and our suppliers’ technical documentation. The absence of the substances is not verified by Beckhoff Automation by means of analytical tests. When addressed to our customers any information contained in this document is subject to the terms and conditions expressed in the governing customer agreement. Our general terms and conditions apply. |
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