Instruction manual

CI-ControlWaveLP Appendix 1 Page 1 PC-104 AO Module Option
PC/104 ANALOG OUTPUT MODULE OPTION
DESCRIPTION
PC/104 Analog Output (AO) Modules provide 4 Analog Output channels that can be
independently configured for 1-5V or 4-20mA operation. Analog outputs are electrically
isolated from the CPU power system. The PC/104 Analog Output Board measures 3.775” x
3.550” and is provided with a ribbon cable which provides AO interconnection between AO
Board connector P3 and one of four FMI/OB Board connectors (P3, P4, P5 or P6). The first
PC/104 AO Board is interfaced to the FMI/OB Board’s PC/104 bus through AO Board con-
nectors J1 and J2 and FMI/OB Board connectors P1 and P2. Up to 4 PC/104 AO Modules
can be stacked together above the FMI/OB Board.
Four standoffs on the FMI/OB Board are provided for mounting a PC/104 AO board option
(see Figure 2). All power and interconnect signals (excluding the AO loop power) are
provided to the PC/104 AO Module option via the PC/104 Bus.
Figure 1 - PC/104 Analog Output Option Major Components
The 4-20 mA and/or 1-5 V output circuits are powered directly from either the Power Sup-
ply/Sequencer Board (PSSB) or a user supplied power supply. The supply voltage range is 9
to 30 Vdc. At 10 volts, the maximum external load connected to any AO is 250 Ohms. The
minimum supply voltage for a 650 Ohm external load is 19 Vdc. The maximum external
load is 650 Ohms. 1-5V Outputs operate from a 10 to 30 Vdc supply. Analog Outputs are
electrically isolated from the system power with optocouplers and a DC to DC Converter.