TWDLCAA40DRF - Twido Compact Base Controller, 40 I/O, 24 DI, 14 Relay + 2 Transistor, 100-240 V AC

Product type: Compact Base Controller  |  Range: Twido  |  Supply: 100-240 V AC

The TWDLCAA40DRF is a compact base controller of the Twido range, a brick-style PLC with the CPU and the I/O in one housing. It provides 40 discrete I/O points: 24 inputs at 24 V DC, 14 relay outputs and 2 transistor outputs. The supply is 100 to 240 V AC, so the controller runs directly from a single-phase mains without an external power supply. The housing is 95 mm high, 90 mm wide and 70 mm deep, clips onto 35 mm symmetrical DIN rail and leaves room for up to seven expansion modules on the same controller. This version has no Ethernet port; the Ethernet variant of the same controller is a different reference.

Each of the 24 inputs accepts 24 V DC and can be wired sink or source, so PNP and NPN sensors can be used on the same controller. Input voltage limits are 20.4 to 26.4 V. Current draw is 11 mA on I0.0 to I0.1 and I0.6 to I0.7, and 7 mA on I0.2 to I0.5 and I0.8 to I0.23, with an input impedance of 2100 Ω and 3400 Ω respectively. Field wiring lands on screw terminal blocks. The inputs are grouped, and each group can be referenced to the 0 V of the sensor supply that the controller provides.

Outputs are 14 relay contacts plus 2 transistor outputs. Relay contacts are rated 2 A at 240 V AC and 2 A at 30 V DC, which is enough to drive solenoid valves, contactor coils and indicator lamps directly without an interposing relay. Mechanical durability is 20 million operations and electrical durability is 100,000 operations at rated load, with a maximum contact resistance of 30 mΩ. The two transistor outputs are intended for fast switching duty where a relay would wear out; they are not a substitute for the relay outputs when an AC load has to be switched.

The controller is supplied at 100 to 240 V AC, 50/60 Hz, with an operating range of 85 to 264 V, and consumes 65 VA at 100 V and 77 VA at 264 V. A 24 V DC sensor supply of 0.4 A is built in, so three-wire sensors can be fed from the controller instead of a separate supply. One non-isolated RS485 serial link is integrated and works in Modbus RTU or ASCII, as master or slave, and in character mode; an adapter converts the port to RS232C. Program memory holds 3,000 instructions, with an execution time of 1 ms per K instruction and 0.5 ms of system overhead. Programming is done with the TwidoSuite software.

Operating temperature is 0 to 55 °C, storage temperature −25 to 70 °C, relative humidity 30 to 95 % without condensation, operating altitude up to 2000 m and storage altitude up to 3000 m, with degree of protection IP20 for mounting inside an enclosure. Vibration resistance is 0.075 mm from 10 to 57 Hz and 1 gn from 57 to 150 Hz; shock resistance is 15 gn for 11 ms. Insulation resistance is 10 MΩ at 500 V, with a dielectric strength of 1500 V for 1 minute between the I/O and earth and between the supply and earth. The supply is protected by an internal fuse. The controller carries CE marking; UL and CSA approval is listed in the product data and should be confirmed against the label on the unit.

Specifications