G.M. INTERNATIONAL / D1000 / Signal Converter and Trip Amplifiers
1 channel I.S. input from separately powered transmitters, provides 3 port isolation (input/output/supply) and current or voltage output signal. In addition it provides two SPST Relay Alarm contacts with adjustable Alarm Trip Point.
The single channel DIN Rail Repeater Power Supply and Trip Amplifier D1054S, provides a fully floating dc supply for energizing conventional 2 wires 4-20 mA transmitters, or separately powered 3, 4 wires 4-20, 0-20 mA transmitters located in Hazardous Area, and repeats the current in floating circuit to drive a Safe Area load.
One additional independent Alarm Trip Amplifier is also provided; total of two when using the pulse output as an alarm mode. Alarm energizes, or de-energizes an SPST opt coupled open-collector transistor for High, Low or Low-start-up alarm function.
• SIL 2 according to IEC 61508, IEC 61511 using analog output or trip amplifiers for Tproof = 3 / 6 years (10 / 20 % of total SIF)• PFDavg (1 year) 3.33 E-04, SFF 83.9 % using analog output.• PFDavg (1 year) 2.85 E-04, SFF 88.7 % using trip amplifiers.• Input from Zone 0 (Zone 20), Division 1, installation in Zone 2, Division 2.