20
| RMC-100| 2105552MNAE
Figure 2-8: Inputs and outputs
Legend for Figure 2-8: Inputs and outputs
ID
Port name Terminal type
1
PI
Removable terminal connector (4 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
2
AO
Removable terminal connector (4 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
3
AI
Removable terminal connector (12 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
4
DI/DO
Removable terminal connector (12 POS), screw termination. Wire gauge 12
AWG to 22 AWG.
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.
provides the analog input specifications.
Table 2-6: Analog input specifications
Electrical specification
(each point)
Description
Value
AI mode
Each AI point supports voltage or current mode
operation, configurable from the user interface.
Voltage /
Current
AI input voltage
Input voltage range
0 – 30 Vdc
AI input current
Input current range when configured for current
mode
0 – 20 mA
AI input impedance
(voltage mode)
Resistance to ground on AI in voltage mode
90 kΩ typical
AI input impedance
(current mode)
Resistance to ground on AI in current mode
255 Ω typical
AI current source max
Isrc
A current limited voltage-sourcing pin provides a
sourcing loop current for 4-20 mA current loops.
25 mA dc max
AI resolution
Analog to digital converter (Analog to digital
24 bits
3
2
4
1