Communication

The 505DR can communicate directly with the plant DCS and/or operator control panel using Modbus

TCP or OPC communications.

Serial communication is also supported using RS-232 or RS-485 and ASCII or RTU Modbus.

Control PIDs can perform process control or be used as limiters for speed/load dynamics,

pumping/discharge pressures, cascade, auxiliary, intake plenum, exhaust plenum, and rotor acceleration.

System Protection

– Integrated overspeed protection logic and test functions

– First open indication on 15 shutdown inputs

– External alarm indication on 15 inputs

– Stuck at critical speed band logic

– Bufferless transfer between control modes and during Syscon switchover

– Operation and configuration password security

Operating Conditions

– Ambient air temperature: -25 to +65C

– Humidity Lloyd’s ENV2 Test #1

– Dry heat Lloyd’s ENV3

– Salt Spray: US MIL-STD-810. Method 509.2 proc. 1

– Shock: US MIL-STD-810C, Method 516.2-1 proc. 1B

– Vibration Lloyd’s ENV2 Test #1

– Resistance to particulate contamination IEC 60664-1 Class 2

– IEC 60068-2-60 part 2.60 methods 1 and 4

– Resistance to gaseous contamination: coating is resistant to NO2. CO2. SO2 and H2S.

– Battelle Laboratories Class III (IEC 60721-3-3 Categories 3C1 and 3C2)