Analog Inputs And Outputs - Emerson Daniel Danalyzer 1000 Hardware Reference Manual

MODEL 1000
SEP 2005
For operating a printer (in a nonhazardous area) at the GC Controller site, a DB-25 parallel port is
available on the GC Controller's Terminal Board (TB) for field wiring.
For connecting a PC to the GC Controller at the GC Controller site (for setup, operation, or
maintenance in a nonhazardous area), a DB-9 serial port connector is available on the Controller's
front panel.
The STD-Bus Card Cage inside the GC Controller is equipped with two cards. Card slots are
preassigned so that cables can be consistently routed. However, the COM4A Board, the Modem
Board and the Ethernet Board may be piggy-backed in any order on the CPU Board. If the Radicom
modem is used, it must be the top board in the card cage assembly.
An optional stream switching assembly (with either AC or DC solenoids) can be controlled by the
GC Controller, allowing for switching up to 12 streams.
2.3.1.1

Analog Inputs and Outputs

The GC Controller can accommodate eight fully differential analog 4 to 20 mA input signals. Four
of the analog inputs are used by the associated Analyzer, and they are filtered with transient
protection. The additional four input ports provide the ability to accept signals from other Analyzers,
so that the analytical report of the chromatograph can include other information on the gas stream,
such as water or sulphur content. Transient protection and shield terminations are available for these
inputs.
There is capability for a maximum of ten analog outputs. Two analog outputs are available as
standard components of the Controller; the other eight analog outputs are optional. All ten analog
outputs are current type: 4-20 mA, not isolated. Also, all ten analog outputs can be calibrated by the
MON2000 software.
2-12
EQUIPMENT DESCRIPTION