The MOSCAD-M Unit
26
AO (x1)
One Analog Output is connected to TB5. The AO is 0-20mA or 0-5V. The AO type (current
or voltage) is determined by connecting to the proper pin on the TB and by selecting the
proper AO type in the software (either via the Configurator Hardware Test utility or the user
software application.)
The AO can be driven from an internal or external power supply. The minimum output
resistance for voltage is 5KΩ. The maximum output resistance for current is as shown below:
Power Supply Current Output Maximum Output
Resistance
Internal 8VDC 120 Ω
Internal 6VDC 100 Ω
Internal 9VDC 250 Ω
External (24VDC) 23-30VDC 750 Ω
External (24VDC) 22VDC 700 Ω
External (24VDC) 20VDC Max 600 Ω
The figure below shows how the AO is to be connected.
Figure 16
Expansion Board Analog Output I/O Connection
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