Emerson MICRO MOTION 1500 - Optional Transmitter Configuration; Overview; Creating Special Measurement Units

Configuration and Use Manual 27
Required Transmitter Configuration
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Figure 4-8 Discrete output circuit
The discrete outputs can be used to indicate a fault, to indicate filling in progress, or to control the
primary or secondary valves, as described in Table 4-10.
Note: Before you can assign a discrete output to valve control, the Fill Type parameter must be
configured. See Chapter 7 and Figure 7-3.
Table 4-9 Discrete output polarity
Polarity Output power supply Description
Active high Internal • When asserted, the circuit provides a pull-up to 15 V.
• When not asserted, the circuit provides 0 V.
External • When asserted, the circuit provides a pull-up to a site-specific
voltage, maximum 30 V.
• When not asserted, circuit provides 0 V.
Active low Internal • When asserted, the circuit provides 0 V.
• When not asserted, the circuit provides a pull-up to 15 V.
External • When asserted, the circuit provides 0 V.
• When not asserted, the circuit provides a pull-up to a site-specific
voltage, to a maximum of 30 V.
15 V (Nom)
Out+
Out–
3.2 Kohm