Red Lion APSIS - Manual (Page 2)

PROCESS MONITORING
SYSTEM
8 Apollo Thermocouples (APLTC) and 8
GEMINIs, all with isolated 20 mA Current
Loop Serial Communications, monitor and
control processes within a plant. All units,
which are located in different areas of the
plant, are tied together in series in two
“Loops” (one Transmit Tx, the other
Receive Rx) and are connected to a Central
Computer located in another area of the
plant. Since there are more than 7, and no
more than 16 units in the “Loop”, the
APSIS +20 mA Current Source Outputs are
used to power each “Loop”. (Both Apollo
Thermocouple and Gemini units can power
up to 7 units in a “Loop” when using their
internal 20 mA sources. However, their
sources may not be tied together to power
more than 7 units.) Each unit is assigned a
different address number and the same Baud
rate (see appropriate APLTC or Gemini data
sheet). An application program is written
which allows the Central Computer to send
and retreive data from any APLTC or
Gemini.
FIGURE 3
OUTPUT VOLTS/CURRENT
*Unregulated output +(2) 20 mA current
sources (if used).
ORDERING INFORMATION
PART NUMBERS FOR
MODEL NO. DESCRIPTION AVAILABLE SUPPLY VOLTAGES
230 VAC 115 VAC
APSIS Accessory Power Supply- Current Source APSIS010 APSIS000
Base Mount, 8-Pin Octal Socket SKT10000
Din Rail Mount, 8-Pin Octal Socket SKTDIN00