Rockwell Automation Liqui-Flo AC Power Modules - Manual (Page 27)

About the Drive 2-15
2.7 RMI Board Description
The following signals are available at the RMI board terminal strip. Refer to figure 2.10
for terminal identification. For a detailed description of the RMI board signals, refer to
section 7.4.
2.7.1 Digital Inputs
Four 24 volt DC digital inputs provide additional speed reference options. The inputs
are active high. A 24 VDC supply is provided by the RMI board for use with the digital
inputs. The supply is short circuit- and overvoltage-protected.
2.7.2 Digital Outputs
Four 24 volt digital outputs are turned on and off as a result of data comparisons in the
drive. All digital outputs are source-driven (active high with common ground) and short
circuit-protected. Each output has an adjustable time delay that can be programmed
as an on-delay or an off-delay. An option to select an external 24 volt supply for
increased current capability at the outputs is jumper-selectable.
2.7.3 Relay Outputs
Three relay outputs can be turned on and off as a result of data comparisons in the
drive. Each output has an adjustable time delay that can be programmed as an
on-delay or an off-delay. All contacts are rated at 2 A, 24 VDC or 250 VA, 120 VAC.
2.7.4 Analog Input
The analog input is based on a 10-bit analog-to-digital (A/D) converter and is
jumper-selected between 0 to 10 volts or 0 to 20 mA. Separate connection terminals
are provided for voltage input and current input. The inputs are overvoltage-protected.
Offset and gain are computed by software.
2.7.5 Analog Outputs
Three analog output channels can be configured. The outputs are short circuit
protected. The output value is modulated over four 1 msec scans to provide 10-bit
data resolution.
2.7.6 Frequency Input
The frequency input operates from 0 to 200 kHz, 15 VDC. The input is single-ended
and uses the same common as the analog input.