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MBA401RR-C · BARRIER CONTROL WITH COMMUNICATION

MBA401RR-C barrier control with Modbus communication: raising and lowering, signal light and automatic or local mode.

Product type:	Barrier control with communication
Operation:	Raise and lower pulses
Signalling:	2-lamp traffic light
Modes:	Automatic (Modbus) or local

Features

Supply

24 V AC/DC

Communication

Modbus RTU · RS-485

Outputs

250 VAC · 2 A

Mounting

DIN rail or wall

1On power-up, RUN lights up, the identifier is shown for 2 seconds and the unit returns to its last mode, automatic or local.
2In automatic, the Modbus master sends commands (40,000 registers) and reads the status (30,000 registers).
3To switch to local, ENTER is held for 5 seconds; the menu starts lowering, raising or the return to automatic.
4The upper and lower limit switches show when each movement ends.

What does it control?

The barrier movement, with raise and lower pulses, and the signal light.

How does it communicate?

Over Modbus RTU on RS-485. The 30,000 registers can always be read; commands in the 40,000 registers are only accepted in automatic mode.

What if power fails mid-movement?

It keeps the operating mode and the unfinished raise or lower sequence.

Reference	MBA401RR-C (24 V AC/DC)
Series	M · DIN rail or wall
Product type	Barrier control with communication

Supply	24 V AC/DC
Outputs	250 VAC · 2 A: raise pulses, lower pulses and 2 signal lamps
Inputs	Upper and lower limit switch

Modes	Automatic (Modbus) · local (unit menu)
Local commands	Lower barrier · raise barrier · back to automatic
Memory	Operating mode and unfinished sequence