UD77
Control Techniques DeviceNet Interface Module for Unidrive Classic

The Control Techniques UD77 is a DeviceNet Interface Module for the Undrive Classic series of AC Drives. The module is installed in the expansion slot located below the Unidrive's keypad. DeviceNet is a high speed communications network and protocol, that allows large amounts of data to be transferred quickly to and from network nodes. The DeviceNet Interface will detect the network data rate and automatically synchronise to it. The DeviceNet interface for Unidrive is a slave node only.

DeviceNet neworks are centralised systems requiring a master controller (usually a PLC like Siemens S5 or Mitsubishi Q series) which controls all communications with slave nodes on the network.

UD77 Key Features

• Full co-processor functionality is retained
• Direct connection to DeviceNet high speed communications protocol that uses the Controller Area Network (CAN) hardware layer
• Fast data transfer between network nodes
• Each node configured with a unique network address
• Polled data connections with a minimum data transfer
• Cyclic data transfer with a minimum "heartbeat rate" of 50 mS
• EDS files available
• Supports data rates up to 500 Kbits/sec
• Support two or three 16 bit data words
• Two data words can be combined to produce a single 32 bit data word, allowing complete access to all UD70 position controller parameters via the Profibus-DP network
• Full data mapping allows any polled or cyclic data work to control or source from any drive parameter
• Foreground and Background data transfer rates for polled data, where background data is transmitted every N foreground cycles
• Explicit (or non cyclic) data channel allows the master controller to access any drive parameter

Specifications

• CAN optically isolated physical layer
• Data rates from 125Kbits/sec to 500 Kbits/sec
• Up to 500 m network length at 125 K/bits/sec
• Up to 100 m network length at 500 K/bits/sec
• Up to 64 nodes on asingle network
• Up to 6 data bytes per node
• Weight 76g