{"product_id":"1756-m08seg-allen-bradley-generic-servo-module-controllogix","title":"1756-M08SEG Allen-Bradley Generic Servo Module ControlLogix","description":"\u003cp\u003eConfigured for SERCOS motion communication in a ControlLogix chassis, the \u003cstrong\u003eAllen-Bradley 1756-M08SEG\u003c\/strong\u003e (\u003cstrong\u003e1756-M08SEG\u003c\/strong\u003e Generic Servo Module) provides an 8-axis interface for Extended Pack Profile compliant SERCOS drives. The module supports 4 Mbps and 8 Mbps SERCOS data rates.\u003c\/p\u003e\n\u003ch3\u003eModel and Function\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-M08SEG\u003c\/strong\u003e is identified by Rockwell Automation as a ControlLogix SERCOS Generic Servo Module, Series A. It provides up to 8 axes per module and supports up to 32 axes within a controller configuration. The module uses the SERCOS interface for communication with compatible servo drives.\u003c\/p\u003e\n\u003cp\u003eThe module is intended for drives using the \u003cstrong\u003eAXIS_GENERIC_DRIVE\u003c\/strong\u003e data type and Extended Pack Profile. Motion communication is carried over a fiber-optic SERCOS connection rather than conventional discrete wiring.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-M08SEG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eGeneric Servo Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries Revision\u003c\/td\u003e\n\u003ctd\u003eSeries A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA, per supplied product data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.6 x 14.1 x 15.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e6.2 W power dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxes per Module\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxes per Controller\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eSERCOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSERCOS Data Rate\u003c\/td\u003e\n\u003ctd\u003e4 Mbps or 8 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 5 VDC\u003c\/td\u003e\n\u003ctd\u003e760 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 24 VDC\u003c\/td\u003e\n\u003ctd\u003e2.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw at 5.1 VDC\u003c\/td\u003e\n\u003ctd\u003e1.2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e21.2 BTU\/hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eRockwell Automation technical documentation identifies the 1756-M08SEG as an 8-axis SERCOS interface module for Extended Pack Profile compliant applications.\u003c\/p\u003e\n\u003ch3\u003eSERCOS Motion Interface\u003c\/h3\u003e\n\u003cp\u003eThe 1756-M08SEG provides a digital fiber-optic SERCOS link between the ControlLogix controller and compatible servo drives. Rockwell Automation specifies 4 Mbps and 8 Mbps communication rates for the SERCOS interface.\u003c\/p\u003e\n\u003cp\u003eFor the 1756-M08SEG, published technical data specifies the following SERCOS cycle relationships:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAt 4 Mbps, 0.5 ms supports up to 2 drives where applicable, 1 ms supports up to 4 drives, and 2 ms supports up to 8 drives.\u003c\/li\u003e\n\u003cli\u003eAt 8 Mbps, 0.5 ms supports up to 4 drives where applicable, 1 ms supports up to 8 drives, and 2 ms supports up to 16 drives.\u003c\/li\u003e\n\u003cli\u003eThe module provides 8 available axes.\u003c\/li\u003e\n\u003cli\u003eThe controller configuration can contain up to 32 axes.\u003c\/li\u003e\n\u003cli\u003eThe module is associated with the AXIS_GENERIC_DRIVE data type for generic SERCOS drive operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SERCOS connection uses fiber-optic cabling. The communication path therefore does not use the conventional copper signal wiring normally associated with discrete drive interfaces.\u003c\/p\u003e\n\u003ch3\u003eControlLogix Backplane and Motion Configuration\u003c\/h3\u003e\n\u003cp\u003eThe module receives its operating power through the ControlLogix chassis backplane. The supplied specifications list 760 mA at 5 VDC and 2.5 mA at 24 VDC for backplane current.\u003c\/p\u003e\n\u003cp\u003eThe specified 6.2 W value represents power dissipation rather than a field-side power output. The module does not provide an external drive power supply.\u003c\/p\u003e\n\u003cp\u003eThe 1756-M08SEG is a chassis-based module. Installation requires a compatible ControlLogix chassis and an available module position. Published compatibility information includes 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17 chassis.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-M08SEG Generic Servo Module\u003c\/li\u003e\n\u003cli\u003eCatalog number: 1756-M08SEG\u003c\/li\u003e\n\u003cli\u003eSeries: A\u003c\/li\u003e\n\u003cli\u003eModule function: 8-axis SERCOS Generic Servo Module\u003c\/li\u003e\n\u003cli\u003eFiber-optic SERCOS cables are not included unless separately specified.\u003c\/li\u003e\n\u003cli\u003eControlLogix chassis, power supply, servo drives, and programming software are not included unless separately specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Wiring\u003c\/h3\u003e\n\u003ch4\u003eChassis Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in a compatible ControlLogix chassis slot.\u003c\/li\u003e\n\u003cli\u003eVerify the available chassis power capacity against the module backplane current requirements.\u003c\/li\u003e\n\u003cli\u003eInstall the chassis and power supply according to the applicable ControlLogix installation documentation.\u003c\/li\u003e\n\u003cli\u003eFollow static-control procedures when handling the module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSERCOS Connection\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConnect the SERCOS interface using the specified fiber-optic communication path.\u003c\/li\u003e\n\u003cli\u003eKeep fiber-optic cables away from excessive bending, crushing, and mechanical stress.\u003c\/li\u003e\n\u003cli\u003eInspect optical connectors for contamination before connection.\u003c\/li\u003e\n\u003cli\u003eVerify the SERCOS ring connection before initiating motion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eConfiguration\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfigure the module for the required SERCOS data rate.\u003c\/li\u003e\n\u003cli\u003eVerify that connected drives support the required SERCOS profile.\u003c\/li\u003e\n\u003cli\u003eUse the applicable generic drive data type for the 1756-M08SEG configuration.\u003c\/li\u003e\n\u003cli\u003eConfirm axis count and cycle-time requirements before commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow many axes does the 1756-M08SEG support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module provides up to 8 axes. A ControlLogix controller configuration can support up to 32 axes according to the supplied specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat communication protocol does the module use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-M08SEG uses SERCOS communication over a digital fiber-optic link for communication with compatible servo drives.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat SERCOS data rates are available?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specified communication rates are 4 Mbps and 8 Mbps. The applicable cycle time and supported drive count depend on the selected rate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the 5 VDC backplane current?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specified backplane current at 5 VDC is 760 mA. This value should be included when calculating the ControlLogix chassis power load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module require a separate field power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo external field power input is specified for the module. Operating power is supplied through the ControlLogix chassis backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of cable is used for SERCOS communication?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SERCOS interface uses fiber-optic communication. Conventional copper Ethernet or discrete signal wiring is not used for the SERCOS ring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1756-M08SEG use the same function as the 1756-M08SE?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1756-M08SEG is the Generic Servo Module version and is associated with Extended Pack Profile compliant drives and AXIS_GENERIC_DRIVE configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module have firmware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Rockwell Automation provides firmware for the 1756-M08SEG family. Firmware compatibility should be checked against the controller and motion software configuration before an update.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066420351149,"sku":"1756-M08SEG","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-m08seg_1.jpg?v=1787189631","url":"https:\/\/www.maxwellplc.com\/products\/1756-m08seg-allen-bradley-generic-servo-module-controllogix","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}