TM2DRA8RT - I/O Expansion Module, 8 Relay Outputs, 2 A, Screw Terminal

Product type: I/O Expansion Module  |  Range: Modicon M238 logic controller  |  Outputs: 8 relay, 1 NO

The TM2DRA8RT is a discrete output expansion module for the Modicon M238 logic controller. It adds eight relay outputs, each a normally open contact, so loads are switched directly at the machine without an interposing relay. Contacts are rated for 24 V DC and 230 to 240 V AC, with a maximum of 30 V DC and 264 V AC, which covers contactor coils, solenoid valves, indicator lamps and interposing relay circuits. The module is compatible with Twido controllers and Advantys OTB interface modules. It mounts on 35 mm symmetrical DIN rail and measures 90 mm in height, 27.3 mm in width and 84.6 mm in depth.

The eight outputs are split into two groups, one common line for four channels. COM0 and COM1 are not connected together internally, so one group can switch a 24 V DC circuit while the other switches a 230 V AC circuit on the same module. Current is 2 A maximum per output and 7 A maximum per common line; a fuse of no more than 7 A has to be fitted externally for the load. Capacitive loads are not supported, and inductive AC loads require an external protective circuit to prevent the contacts from welding. Minimum switching load is 0.1 mA at 0.1 V DC and contact resistance is 45 mΩ maximum.

Turn-on time is 12 ms and turn-off time is 10 ms. Mechanical life is 20 million operations minimum at no load and 1,800 operations per hour, and electrical life is 100,000 operations at 2 A resistive on 240 V AC or 30 V DC, at 1 A AC-15 on 240 V AC, and at 1 A DC-13 on 24 V DC. Insulation is 2300 V AC between the outputs and the internal bus, 1500 V AC between the outputs and the 0 V terminals, and 1500 V AC between the two output groups. A display block on the front shows the state of each output, so channels can be checked during commissioning without the programming software.

The module is powered from the controller bus and needs no separate supply: current draw is 30 mA on the 5 V bus and 40 mA on the 24 V bus with all outputs on, falling to 5 mA and 0 mA with all outputs off. Field wiring lands on one removable screw terminal block, which can be unplugged for replacement without disturbing the other modules; the connector is rated for more than 100 insertion and removal cycles. The 27.3 mm width keeps the panel footprint small when several TM2 modules are placed side by side on the rail.

Operating temperature is 0 to 55 °C, storage temperature is −25 to 70 °C, relative humidity is 10 to 95 % without condensation, operating altitude is up to 2000 m and storage altitude up to 3000 m. Vibration resistance on DIN rail is 3.5 mm fixed amplitude from 5 to 8.5 Hz and 1 g from 8.5 to 150 Hz; shock resistance is 15 g for 11 ms. The module is IP20, pollution degree 2 to IEC 60664, and meets IEC 61000-6-4 Class B for conducted and radiated emission, with immunity tested to IEC 61000-4-2 at 8 kV air discharge, 6 kV contact discharge and 10 V/m radiated field. It carries CE marking and is RoHS compliant.

Specifications