Table 2-6: Analog Input Specifications - ABB RMC-100 User Manual

Figure 2-8: Inputs and outputs
1
4
Legend for Figure 2-8: Inputs and outputs
ID Port name
1 PI
2
AO
3 AI
4 DI/DO
2.2.3.1 Analog input
The RMC provides four analog inputs. Each port consists of a power source input pin, input signal pin,
and input ground pin. For specific pinout information, see section
Each of the four analog inputs (AI) consists of an analog input point capable of handling voltage or
current inputs. The voltage range is 0-30 Vdc. The current range is 4-20 mA.
Table 2-6 provides the analog input specifications.

Table 2-6: Analog input specifications

Electrical specification
(each point)
AI mode
AI input voltage
AI input current
AI input impedance
(voltage mode)
AI input impedance
(current mode)
AI current source max
Isrc
AI resolution
2 0 | R MC-1 00 | 2 10 55 5 2MN A E
3 2
Terminal type
Removable terminal connector (4 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
Removable terminal connector (4 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
Removable terminal connector (12 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
Removable terminal connector (12 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
Description
Each AI point supports voltage or current mode
operation, configurable from the user interface.
Input voltage range
Input current range when configured for current
mode
Resistance to ground on AI in voltage mode
Resistance to ground on AI in current mode
A current limited voltage-sourcing pin provides a
sourcing loop current for 4-20 mA current loops.
Analog to digital converter (Analog to digital
3.5.5.1 Analog input pinouts.
Value
Voltage /
Current
0 – 30 Vdc
0 – 20 mA
90 kΩ typical
255 Ω typical
25 mA dc max
24 bits