BMXDDI1602 - Modicon X80 Discrete Input Module, 16 DI 24 V DC Sink

Product type: Discrete Input Module  |  Range: Modicon X80  |  Inputs: 16 DI, 24 V DC, sink  |  Terminal block: not included

The BMXDDI1602 is a 16-channel discrete input module of the Modicon X80 platform. It is fitted in a free slot of an M340 rack and reads the on/off state of push buttons, limit switches, selector switches, relay contacts and proximity sensors. All 16 inputs are isolated, each one is wired individually, and the module passes the states to the controller over the rack backplane. The module is 103.7 mm high, 32 mm wide and 86 mm deep, so 16 input points take only 32 mm of rack width. This is the standard version; the BMXDDI1602H is the same module with conformal coating for severe environments.

Field wiring lands on a 20-pin removable terminal block. The terminal block is not supplied with the module and has to be ordered separately, in one of three versions: BMXFTB2000 cage clamp, BMXFTB2010 screw clamp or BMXFTB2020 spring clamp. Inputs accept 2-wire or 3-wire wiring and are compatible with 2-wire and 3-wire proximity sensors to IEC 60947-5-2 and IEC 61131-2 type 3, with a sensor supply of 19 to 30 V. Because the terminal block unplugs, a module can be replaced without loosening the field wires, and hot swapping is supported.

The input circuit takes 3.5 mA at 24 V DC and has an impedance of 6800 Ohm. A state 1 is guaranteed from 11 V and 2 mA, a state 0 is guaranteed below 5 V and 1.5 mA. Response time is 4 ms typical and 7 ms maximum. Inputs are protected against reverse polarity, with one external 0.5 A fast-blow fuse. Inputs may be paralleled. Insulation resistance is above 10 MOhm at 500 V DC, and the isolation between the channels and the backplane bus is 1500 V AC at 50/60 Hz for one minute. Note that this module is positive logic: the input sinks current from the sensor. Do not confuse it with the BMXDDI1603, which looks similar but is a 48 V DC input module.

Diagnostics are read from the front panel. A green RUN LED shows module operation, one green LED per channel shows the state of each input, a red ERR LED shows a module fault and a red I/O LED shows a module input/output fault. The module also monitors the sensor supply: below 14 V it reports a sensor fault, above 18 V the sensor supply is reported as correct. Power dissipation is 2.5 W maximum and the module draws 76 mA typical, 107 mA maximum, at 3.3 V DC from the backplane. MTBF is 775 000 hours.

Operating temperature is 0 to 60 °C, storage temperature −40 to 85 °C, relative humidity 5 to 95 % at 55 °C without condensation, and operating altitude 0 to 2000 m, or 2000 to 5000 m with derating. Protection degree is IP20 and pollution degree is 2, so the module is made for mounting inside a closed enclosure. Resistance is 3 gn against vibration and 30 gn against shock. The module is marked CE, UKCA, CULus, EAC and RCM, conforms to IEC 61131-2 and to the directives 2014/35/EU and 2014/30/EU. Net weight is 0.115 kg; one piece is packed in a 12 x 11.5 x 5.7 cm carton of 144 g.

Specifications