ABB Symphony Harmony Series, Instruction, Page: 110 / 402

WBPEEUI240751C0 2 - 1
Section 2
Input/Output Blocks
Introduction
This section provides a brief description of the available I/O
and auxiliary blocks, and provides specifications for each.
Refer to Tables
1-8 and 1-9 for general specifications that
apply to all I/O and auxiliary blocks.
NOTES:
1. Refer to
Inputs and Outputs
in Section 3 for further explanation of ana-
log and digital input and output capabilities.
2. Refer to the Harmony I/O data sheets (Table 1-4 ) for current consumption
and heat dissipation specifications.
AIN-120
Current, High Level Voltage In
Analog input signals:
•
4 to 20 milliampere.
•
–10 to +10 VDC high level, differential.
•
–10 to +10 VDC high level, single-ended.
The AIN-120 block supports 16 nonisolated input channels
that are individually hardware configurable for either voltage
or current mode and software configurable for voltage range.
The block supports redundant I/O electronics.
Table 2-1. AIN-120 Specifications
Property Characteristic/Value
1
Input range 4 to 20 mA
–10 to +10 VDC
Channels 16 nonisolated
Input impedance 10 M
Ω
minimum
Full scale range 20 V
Maximum error
2
Current
Voltage ±0.06% of full scale range
±0.05% of full scale range