The BusWorks,Ñ¢ 900 MB Series Discrete I/O Module, specifically the 902MB-0900 model, features twelve independent output channels designed for low-side switching applications. It operates within a voltage range of 0 to 35V DC and supports a maximum continuous current of 500mA per channel. The module utilizes the Modbus-RTU protocol for high-speed RS-485 communication, allowing for efficient data transfer at baud rates up to 115.2K bps. Power requirements for the module range from 10 to 36V DC or 24V AC, and it includes built-in over-temperature and over-current protection for enhanced reliability. The module is designed with three-way isolation between I/O, power, and network circuits to prevent ground loops. Additionally, it features socketed pull-up resistors for flexible configuration and supports watchdog timers for communication monitoring. The rugged construction and compact design make it suitable for both control room and field applications.
These modules provide twelve discrete input and/or output channels. Isolation separates the I/O, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. Both AC and DC power sources are supported with wide range, nonpolarized, diode-coupled terminals.
The open-drain outputs are intended for current-sinking or low-side switching applications. The buffered inputs are active-low. These models are the complement of the 904, 905, and 906 units which have open-source, high-side output switches and active-high inputs. Socketed pull-up resistors are easily removed or exchanged to satisfy your application requirements.
Combining flexible I/O types, wide I/O ranges, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details).
| Acromag, Inc. | |
|---|---|
| Product Category | Data Acquisition |
| Product Number | 902MB-0900 |
| Product Name | BusWorks™ 900 MB Series Discrete I/O Module |
| Data Acquisition | Output Module |
| Form Factor | DIN Rail |
| Excitation | Voltage |
| Outputs | Relay Output |
| User Interface | Computer Programmable |
