Specification
| Honeywell DIGITAL INPUT MODULE | ||
| Input voltage | 24 VDC or 120 VAC | Honeywell FTA-T-21 |
| Number of channels | 4 | Honeywell controller |
| Input resistance | 10 kΩ | Honeywell system |
| Input current | 10 mA | Honeywell controller |
| Storage temperature range | -40°C to +105°C | Honeywell system |
| Operating temperature range | -20°C to +65°C | FTA-T-21 |
FTA-T-21 I/O Module Functions
• High Level Analog Input /HART Input Module (16pt) – The High Level Analog Input Module supports both high
level analog and HART inputs. Analog inputs are typically 4-20mA DC for both traditional and HART devices. HART
data can be used for status and configuration. HART data, such as the secondary and tertiary variables, can also be
used as process control variables. Two versions are available.
• High Level Analog Input w/o HART (16pt) - The High Level Analog Input Module supports high level analog inputs
Analog inputs are typically 4-20mA DC for traditional devices.
• Analog Output/HART Output Module (16pt) – The Analog Output Module supports both standard 4-20mA DC
outputs and HART transmitter outputs. Two versions are available.
• Analog Output w/o HART (16pt) – The Analog Output Module supports standard 4-20mA DC outputs.
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