Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ALSTOM |
| Model | AS111-1 |
| OEM Code | C0200550 |
| Product Type | Analog Output Module |
| System | ALSPA CE2000 / CE3000 |
| Number of Channels | 8 |
| Output Range | 0–20 mA / 4–20 mA |
| Main Accuracy Limit | ±0.18% |
| Temperature Influence | ±0.02% / 10°C |
| Bus Power Consumption | Approx. 0.75 W |
| I/O Power Consumption | Maximum approx. 13.92 W |
| Process Supply | Verify exact system configuration |
| Isolation | Verify against the applicable hardware documentation |
| Mounting | ALSPA rack / I/O base |
| Application | Process and turbine control |
The metrology documentation gives the AS111-1 accuracy limit as ±0.18%, temperature influence as ±0.02%/10°C, and maximum I/O-side power consumption as approximately 13.92 W.
Product Introduction
The ALSTOM AS111-1 is an eight-channel analog output module used within the ALSPA CE2000/CE3000 control-system architecture. Its primary job is to take digitally generated control values from the controller and provide proportional analog current signals to field equipment. The documented output ranges are 0–20 mA and 4–20 mA, making the module suitable for conventional industrial current-loop control applications.
The ALSTOM AS111-1 C0200550 is particularly relevant to legacy ALSPA installations where analog outputs are used to command control valves, actuators, positioners, drives, or other regulating equipment. An independent parts source also identifies AS111-1 as an ALSTOM PCB card, while other technical listings associate the board with CE2000/CE3000 systems.
The important distinction is that AS111-1 is an I/O module, not a general-purpose CPU or standalone controller. The module depends on its ALSPA rack/base and host controller for its control commands and system configuration.
AS111-1
Main Features & Field Considerations
Eight analog outputs
The provides 8 independent analog output channels. The documented output ranges are 0–20 mA and 4–20 mA.
Suitable for current-loop control
The 0–20 mA and 4–20 mA ranges cover common process-control applications. In a plant environment, the actual configured range should be checked channel by channel rather than assuming every output is configured identically.
Documented accuracy
The available metrology documentation specifies a basic allowable error of ±0.18% for both listed current-output ranges and a temperature-related additional error of ±0.02% per 10°C.
Legacy ALSPA architecture
belongs to an older ALSTOM control ecosystem. Physical connector compatibility alone does not prove that another AS111 revision or AS111-2 can be substituted without checking the host rack, firmware/configuration, and electrical characteristics.
Power consumption differs by revision
The same metrology documentation shows different power-consumption figures for and AS111-2. is listed with maximum I/O power consumption of approximately 13.92 W, while AS111-2 is listed at approximately 6.96 W. This is one reason not to treat the two revisions as automatically interchangeable.
Replacement Checks
Before replacing an , verify:
- Exact model:
- OEM code, if marked: C0200550
- Host CE2000/CE3000 system
- Rack and I/O base
- Number of active channels
- Configured output range: 0–20 mA or 4–20 mA
- Loop wiring and polarity
- Load resistance
- Channel assignments
- Existing engineering configuration
- Hardware revision
- Calibration/output verification after installation
For a valve-control application, perform a loop check after replacement rather than assuming the replacement module will reproduce the previous output immediately.
Important Specification Caution
Several online listings incorrectly describe as a 220 VAC module with a 50 kHz output frequency. Those specifications are not consistent with the independent documentation identifying as an 8-channel 0–20/4–20 mA analog output module.
I would also avoid publishing claims such as Ethernet, Modbus TCP, PROFINET, ARM Cortex-A9, 1 GB DDR3, or 128 MB flash for . Those specifications appear in generic or conflated secondary descriptions and are not credible specifications for this CE2000/CE3000 analog-output card.
Procurement Note
Use the following identification when sourcing:
ALSTOM — C0200550 — 8-Channel Analog Output Module — 0–20 mA / 4–20 mA
For a legacy ALSPA system, the versus AS111-2 distinction matters. Verify the exact installed revision, rack/base compatibility, output configuration, and system power budget before accepting a substitute. The documented technical data supports treating as an 8-channel analog current-output module, not as a generic ALSTOM control board.
