Analog Output Configuration - ABB RMC-100 Startup Manual

8.3

Analog output configuration

The analog output configuration consists of defining the AO value in percentage of
the full scale or in engineering units. The engineering units depend on the type of
external device connected to the AO and its operating or measurement range.
When defining non-default engineering units for the first time, it is recommended that
the AO is calibrated first. Engineering units can be defined after calibration is
completed. Engineering units defined on the calibration screen are automatically
reflected in the Analog Output tab (Figure 24).screen. For AO calibration, refer to the
RMC-100 User Manual.
If you need to change settings for the analog output after the first time calibration:
1. Select I/O System on the navigation tree.
2. Select the Analog Output tab (Figure 24).
3. Enter the AO percentage or the engineering units number.
4. Click Send.
5. Click Re-read.
8.4 Digital input/digital output configuration
The six (6) DI/DO ports support configurable input or output modes of operation.
In input mode, the input thresholds are configurable for an input voltage range of 0 to
30 Vdc. This mode supports signals from external devices with:
— Active voltage outputs types (non-dry contact) – Digital Input (Voltage)
— Dry contact and open collector/drain output types – Digital Input (Dry-contact)
In output mode, the DO provides a MOSFET Open Drain (OD) type output capable
of sinking up to 2 amps (direct current).
To configure each digital input or output:
1. Select I/O System in the navigation tree.
2. Select the Digital I/Os tab (Figure 25).
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Figure 24: Analog output configuration
Figure 25: Digital input and output configuration