Description
The Honeywell RM7888A Relay Module is a microprocessor-based, integrated burner control for industrial process semiautomatically fired gas, oil, coal, or combination fuels in single and multiple burner industrial applications. The RM7888A requires a Relay Module, Subbase, and Amplifier for operation. Options include the Keyboard Display Module, Data ControlBus™ Module, Modbus™ Module, and remote display mounting. The RM7888 is intended for use in conjunction with a master system control, which determines the purge timing and confirms air supply and airflow. The RM7888A is programmed to provide a level of safety, functional capability, and features beyond those of conventional controls. Its basic functions include automatic burner startup sequencing, five user-selectable operating (run) sequences, four line voltage sequence control inputs (commonly controlled with a Programmable Logic Controller [PLC]), flame supervision, system status indication, system or self-diagnostics, and troubleshooting.