Description
⚙️ Product Overview
The ABB SPASI23 is a 16-channel isolated analog input module for ABB Symphony Plus HR Series I/O. It is designed to process a broad range of analog field signals, including high-level voltage/current signals, millivolt inputs, thermocouples, and 3-wire RTDs.
Each of the 16 channels is independently configurable and uses a dedicated 24-bit analog-to-digital converter. The module performs functions such as input processing, calibration, lead-wire resistance adjustment, cold-junction compensation, gain and offset adjustment, and engineering-unit conversion.
🔧 Key Features
• 16 independently configurable analog input channels
• Supports High Level, mV, TC, and RTD signals
• 24-bit A/D resolution per channel
• Isolated analog input design
• Dedicated A/D converter for each channel
• Automatic cold-junction compensation for supported thermocouples
• Lead-wire resistance adjustment for RTD applications
• Supports multiple thermocouple types
• Designed for ABB Symphony Plus HR Series systems
• Suitable for process measurement and industrial control applications
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | ABB |
| Model | SPASI23 |
| Series | Symphony Plus HR Series / Harmony Rack I/O |
| Product Name | 16-Channel Analog Input Module |
| Product Type | Isolated Analog Input I/O Module |
| Input Channels | 16 independently configured channels |
| Input Types | High Level, mV, Thermocouple, 3-wire RTD |
| A/D Resolution | 24 bit |
| High-Level Input | 1–5 VDC, 0–5 VDC, 0–10 VDC, -10 to +10 VDC, or specified range within ±10 VDC |
| mV Input | -100 to +100 mV; 0 to 100 mV |
| Thermocouples | B, E, J, K, L, N, R, S, T, U; Chinese E and S types |
| RTD Support | 100 Ω platinum, 120 Ω nickel, 10 Ω copper, Chinese 53 Ω copper |
| Power Supply | +5 VDC ±5% |
| Typical Power Requirement | 500 mA |
| Operating Temperature | 0°C to 70°C |
| Dimensions | 269.24 × 360.68 × 73.66 mm |
| Weight | 0.771 kg |
| Mounting/System | Symphony Plus HR Series / Harmony Rack I/O |
| Product Condition | New Surplus |
| Country of Origin | ABB manufacturing origin should be verified from the individual nameplate |
⚠️ Specification Note
ABB documentation identifies SPASI23 specifically as an AI module with 16 channels for TC, mV, RTD, and High Level signals. The published technical information also specifies 24-bit conversion and +5 VDC module power requirements.
🏭 Typical Applications
The SPASI23 is intended for industrial process measurement where several types of field instrumentation need to be connected to the same I/O platform.
Typical applications include:
• Power generation
• Boiler and turbine monitoring
• Process temperature measurement
• Chemical processing
• Industrial heating systems
• Manufacturing plants
• Energy management systems
• Plant instrumentation
• Process monitoring
• Symphony Plus control systems
🌡️ Input Signal Flexibility
A useful feature of SPASI23 is that the 16 channels can be independently configured. The same module can therefore handle different measurement requirements without requiring a separate analog input module for every signal type.
Supported measurements include thermocouple temperature signals, RTD resistance-temperature signals, millivolt signals, and high-level voltage inputs. The published ABB catalog lists thermocouple types B, E, J, K, L, N, R, S, T and U, together with specified Chinese E and S types.
🔬 24-Bit Measurement
Each channel has its own A/D converter with 24-bit resolution. The module also performs signal conditioning and measurement calculations internally, including calibration, engineering-unit conversion, lead-wire resistance adjustment, and cold-junction compensation where applicable.
🔧 Installation Considerations
Before replacing an existing SPASI23, check the following:
• Confirm the complete module identification
• Verify the Harmony Rack / HR Series configuration
• Record the wiring of all 16 channels
• Confirm each channel’s configured signal type
• Check RTD wiring configuration
• Verify thermocouple type and polarity
• Confirm the module power arrangement
• Back up the existing system configuration before replacement
• Check terminal and rack compatibility
• Perform channel-by-channel testing after installation
🔍 Common Questions and Answers
❓ Q1: What is the ABB SPASI23?
A: It is a 16-channel analog input module designed for ABB Symphony Plus HR Series I/O systems.
❓ Q2: How many analog input channels are available?
A: The module provides 16 independently configurable analog input channels.
❓ Q3: What input signals can SPASI23 handle?
A: It supports high-level signals, millivolt signals, thermocouples, and 3-wire RTDs.
❓ Q4: Does SPASI23 support thermocouples?
A: Yes. Supported types include B, E, J, K, L, N, R, S, T and U, plus specified Chinese E and S types.
❓ Q5: What is the A/D resolution?
A: Each input channel uses a dedicated 24-bit analog-to-digital converter.
❓ Q6: Can the channels be configured independently?
A: Yes. The 16 analog input channels are independently configurable, allowing different supported measurement types to be used according to the system design.
❓ Q7: What RTD types are supported?
A: The published ABB specifications include 100 Ω platinum standards, 120 Ω nickel, 10 Ω copper, and Chinese 53 Ω copper RTDs.
❓ Q8: What system does SPASI23 belong to?
A: SPASI23 belongs to ABB Symphony Plus HR Series, also referred to as Harmony Rack I/O.
❓ Q9: Is SPASI23 a digital input module?
A: No. SPASI23 is an analog input module. It is designed to receive and convert analog measurement signals for the control system.
❓ Q10: Can SPASI23 be replaced by another ABB analog input module?
A: Not automatically. A replacement must match the I/O platform, channel requirements, signal types, wiring, configuration, and system compatibility. Another ABB analog input module may have different electrical and system characteristics.
🔧 Recommended ABB Models
- ABB SPASI23 – 16-Channel Analog Input Module
- ABB SPFEC12 – Analog Input Module
- ABB AI16e – Universal Analog Input Module
- ABB AI16ev – Universal Analog Input Module
- ABB ASI23 – Analog Input Module
- ABB BRC410 – Controller / I/O Interface
- ABB NIS21 – Network Interface Module
- ABB NPM22 – Power / Network Module
- ABB CI858K01 – DriveBus Interface
- ABB CI854B – PROFIBUS DP-V1 Communication Interface
📦 Product Selection Reminder
For replacement work, SPASI23 should be selected according to the complete system configuration rather than simply matching the number of channels. Verify the HR Series rack, field wiring, signal types, power requirements, and existing configuration before installation.
For temperature-heavy applications, pay particular attention to the thermocouple type, RTD standard, wiring arrangement, and configured engineering range. This is especially important when replacing a module in an operating process-control system.
