Modicon M251 Plc Page 10 Modicon M251 logic controllers

10 Description, characteristics Modicon M251 logic controllers Description M251 controllers 1 Removable screw terminal block, 3 terminals for connecting the 24 V c supply. 2 2 RJ 45 connectors connected by an internal switch for Machine or Factory Ethernet network, with exchange and activity speed LED indicator. 3 On TM251MESE controller: RJ 45 connector for fieldbus Ethernet 2 network with exchange and activity speed LED indicator. 4 On TM251MESC controller: a connector for linking to the CANopen and SAE J1939 machine bus (9-way SUB-D). 5 SL serial link port (RS 232 or RS 485): RJ 45 connector. 6 Run/Stop switch. 7 TM4 bus connector: communication bus for linking to TM4 ppp communication modules. 8 QR code for access to the controller technical documentation. 9 Modicon TM3 bus connector for linking to a Modicon TM3 expansion module. 10 LED display block showing: the status of the controller and its components (battery, industrial SD memory card), the status of the embedded communication ports (Ethernet 1 and 2, CANopen, serial link). Behind the removable cover 11, 12, 13 11 Slot for the industrial SD memory card. 12 Backup battery slot. 13 A USB mini-B connector for a programming terminal. 14 Lugs for panel mounting, with screws. 15 Clip for locking on 5 symmetrical rail. Characteristics of M251 logic controllers Conformity b Certifications v e , cULus Listing Mark, C-Tick, EAC, LR, ABS, DNV and GL . v ODVA and Achilles. b Standards v IEC/EN 61131-2 (Edition 2 2007), UL508 (UL61010-2-201), ANSI/ISA 12.12.01-2007, CSA C22.2 No. 213, No. 142, E61131-2 and IACS E10. Environmental characteristics v Ambient operating temperature: - 10...+ 55C (+14...+ 131F) v Storage temperature: - 40...+ 70C (- 40...+ 158F) v Relative humidity: 5...95% (non-condensing) Operating altitude: v 0...2,000 m (0...6,562 ft): complete specification for temperature and exposure v 2,0004,000 m (6,56213,123 ft): - temperature derating: + 1C/400 m (+ 1.8F/1,312 ft) - insulation losses: 150 V c /1,000 m (150 V c /3,280 ft) v Storage altitude: 0...3,000 m (0...9,842 ft) v Immunity to mechanical stress: - For 1131: 5...8.4 Hz (amplitude 3.5 mm/ 0.138 in. ); 8.4...150 Hz (acceleration 1 g) - For merchant navy: 513.2 Hz (amplitude 1.0 mm /0.039 in. ); 13.2...100 Hz (acceleration 0.7g) Supply characteristics v 24 V c power supply v Voltage limit (including ripple): 19.2...28.8 V c v Immunity to micro-cuts (class PS-2): 10 ms v Max. consumption: 45 W 1 2 3 14 5 6 7 8 9 10 11 12 13 15 TM251MESE controller 14 TM251MESC controller 4 1 2 5 6 7 8 9 10 15 11 12 13

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