XM-942 Master Relay Terminal Base Catalog Number 1440-TB-C Installation Instructions For information about See page Important User Information 2 Safety Approvals 4 Power Requirements 6 Interconnect Limit 7 Wiring Requirements 7 Grounding Requirements 8 Mounting on the DIN Rail 12 Wiring 15 Agency Certification 17 Specifications 18
XM-942 Master Relay Terminal Base Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://literature.rockwellautomation.com) describes some important differences between solid state equipment and hard-wired electromechanical devices.
XM-942 Master Relay Terminal Base 3 ATTENTION Environment and Enclosure This equipment is supplied as “open type” equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present, and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool.
XM-942 Master Relay Terminal Base Safety Approvals The following information applies when operating this equipment in hazardous locations. Informations sur l’utilisation de cet équipement en environnements dangereux. Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code.
XM-942 Master Relay Terminal Base 5 IMPORTANT Model XM-120 Wiring to or from this device, which enters or leaves the system enclosure, must utilize wiring methods suitable for Class I, Division 2 Hazardous Locations, as appropriate for the installation in accordance with the product drawings as indicated in the following table.
XM-942 Master Relay Terminal Base European Zone 2 Certification If appropriately marked, this equipment is intended for use in potentially explosive atmospheres as defined by European Union Directive 94/9/CE. Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 50021 (1999). IMPORTANT Observe the following additional Zone 2 certification requirements: • This equipment is not resistant to sunlight or other sources of UV radiation.
XM-942 Master Relay Terminal Base 7 Output Power 100 Watts Maximum (~4A @ 24Vdc) Static Regulation ± 2% Dynamic Regulation ± 3% Ripple < 100mVpp Output Noise Per EN50081-1 Overshoot < 3% at turn-on, < 2% at turn-off Hold-up Time As required (typically 50mS at full rated load * When a fused supply is used the fuse must be a 5 amp, listed, fast acting fuse such as provided by Allen-Bradley part number 1440-5AFUSEKIT.
XM-942 Master Relay Terminal Base • 14 to 22 AWG copper conductors without pretreatment; 8 AWG required for grounding the DIN rail for electromagnetic interference (emi) purposes • Recommended strip length 8 millimeters (0.31 inches) • Minimum insulation rating of 300V • Soldering the conductor is forbidden • Wire ferrules can be used with stranded conductors; copper ferrules recommended ATTENTION See the XM Documentation and Configuration Utility CD for Hazardous Locations installation drawings.
XM-942 Master Relay Terminal Base 9 XM System DIN Rail Grounding 1 1440-VST02-01RA DYNAMIC MEASUREMENT 1440-REX00-04RD EXPANSION RELAY 1440-VST02-01RA DYNAMIC MEASUREMENT 1440-REX00-04RD EXPANSION RELAY Power Supply 1440-RMA00-04RC MASTER RELAY 1 1440-REX00-04RD EXPANSION RELAY 1440-VST02-01RA DYNAMIC MEASUREMENT 1440-TSP02-01RB POSITION 1440-REX00-04RD EXPANSION RELAY 1440-REX00-04RD EXPANSION RELAY 1440-VST02-01RA DYNAMIC MEASUREMENT 1440-REX00-04RD EXPANSION RELAY Power Supply 1 Use 14
XM-942 Master Relay Terminal Base The grounding wire can be connected to the DIN rail using a DIN Rail Grounding Block (see illustration below). DIN Rail Grounding Block 24V Common Grounding 24V to the XM module must be grounded. When two or more power supplies power the XM system, ground the 24 V Commons at a single point, such as the ground bus bar.
XM-942 Master Relay Terminal Base 11 Transducer Grounding Make certain the transducers are electrically isolated from earth ground. Cable shields must be grounded at one end of the cable, and the other end left floating or not connected. It is recommended that where possible, the cable shield be grounded at the XM terminal base (Chassis terminal) and not at the transducer. DeviceNet Grounding The DeviceNet network is functionally isolated and must be referenced to earth ground at a single point.
XM-942 Master Relay Terminal Base Switch Input Grounding The Switch Input circuits are functionally isolated from other circuits. It is recommended that the Switch RTN signal be grounded at a single point. Connect the Switch RTN signal to the XM terminal base (Chassis terminal) or directly to the DIN rail, or ground the signal at the switch or other equipment that is wired to the switch. Mounting on the DIN Rail You can also mount the terminal base to a grounded mounting plate.
XM-942 Master Relay Terminal Base 13 2. Slide the terminal base unit over leaving room for the side connector (B). 3. Hook the lip on the rear of the terminal base onto the top of the DIN rail, and rotate the terminal base onto the rail. 4. Press down on the terminal base unit to lock the terminal base on the DIN rail.
XM-942 Master Relay Terminal Base 3. Slide the terminal base unit over tight against the neighboring terminal base. Make sure the hook on the terminal base slides under the edge of the terminal base unit. 4. Press down on the terminal base unit to lock the terminal base on the DIN rail.
XM-942 Master Relay Terminal Base 15 Wiring For more wiring connection information, refer to the XM Module User Guide. IMPORTANT Terminal Assignments WARNING EXPLOSION HAZARD Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous. Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous.
XM-942 Master Relay Terminal Base No. Description No. Description 5 Relay 1 N.O. contact 1 31 Chassis 6 Relay 2 N.O. contact 2 32 DeviceNet V (+) (red wire) (Optional, see IMPORTANT note below) 7 No connection 33 CAN_High (white wire) 8 Relay 2 N.O. contact 1 34 RxD 9 Relay 3 N.O. contact 2 35 No connection 10 No connection 36 No connection 11 Relay 3 N.O. contact 1 37 No connection 12 Relay 4 N.O. contact 2 38 Relay 1 N.C. contact 2 13 Relay 4 N.O.
XM-942 Master Relay Terminal Base 17 IMPORTANT The DeviceNet power circuit through the XM module interconnect, whichis rated at only 300mA, is not intended or designed to power DeviceNet loads. Doing so could damage the module or terminal base. To preclude this possibility, even unintentionally, it is recommended that DeviceNet V+ be left unconnected.
XM-942 Master Relay Terminal Base Specifications The following table lists the technical specifications for the XM-942 Master Relay Terminal Base. Product Feature Specification Power Module +21.6 to +26.4V dc Consumption 200 mA maximum Heat Production Environmental Operating Temperature Storage Temperature Relative Humidity Conformal Coating 3.4 Watts (11.
XM-942 Master Relay Terminal Base 19 Publication GMSI10-IN022A-EN-P - May 2010
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