ABB Symphony Harmony Series, Инструкция, Страница: 113 / 402

2 - 4 WBPEEUI240751C0
AIN-220
AIN-220
Isolated Current, High Level Voltage, Low Level Voltage,
Thermocouple In
Analog input signals:
•
4 to 20 milliampere.
•
–10 to +10 VDC high level, differential.
•
–10 to +10 VDC high level, single-ended.
•
–100 to +100 millivolt (DC) low level, differential.
•
–100 to +100 millivolt (DC) low level, single-ended.
•
Thermocouple (refer to Table 2-3 for types supported).
The AIN-220 block supports 16 isolated input channels that
are individually hardware configurable for either voltage or
current mode and software configurable for voltage range or
thermocouple type. Cold junction compensation for thermo-
couple inputs is included. The block supports redundant I/O
electronics.
Table 2-3. AIN-220 Specifications
Property Characteristic/Value
1
Input range 4 to 20 mA
–10 to +10 VDC
–100 to +100 mVDC
Thermocouple types B, E, J, K, L, N (14 AWG), N (28 AWG), R, S, T, U
Chinese E, S
Channels 16 isolated
Input impedance 10 M
Ω
minimum
Full scale range 20 V or 200 mV
Maximum error
2
Current
Voltage ±0.06% of full scale range
±0.05% of full scale range
Temperature effect (0° to 70°C) ±0.005%/°C
Settling time per channel
(100% step change) 170 msec to 95% of final value
Update rate
3
All channels 18 times per second (56 msec)
Rejection (50-60 Hz)
Normal mode
Common mode –70 dB
–120 dB
Number of A-to-D converters 16 + 1 for cold junction