STBACI0320K

Configured for 4-20 mA analog signal acquisition in the Modicon STB distributed I/O network, the Schneider Electric STBACI0320K (STBACI0320K Analog Input Kit) provides direct physical/electrical execution for PLC and PAC input processing. The module handles four analog current input channels with 15 bit plus sign resolution and communicates through a standard STB network interface module.

Hardware Specifications

Parameter	Specification
Model	STBACI0320K
Brand	Schneider Electric
Product Type	Standard Analog Input Kit
Series	Modicon STB Distributed I/O
Origin	ID
Weight	146 g (package weight)
Dimensions	128.3 mm (W) x 70 mm (D) x 18.4 mm (H)
Power Consumption	95 mA at 5 VDC logic bus
Analog Input Channels	4
Input Signal Type	0 mA to 20 mA current input
Resolution	15 bit plus sign
Update Time	10 ms
Rated Supply Voltage	24 VDC
Protection Rating	IP20
Hot Swap Function	Supported with standard NIM fallback
Mounting Base Compatibility	STBXBA2000
Power Distribution Module Compatibility	STBPDT3100 / STBPDT3105
Network Interface Requirement	Standard STB Network Interface Module (NIM)

Modicon STB Analog Signal Processing and I/O Bus Integration

The STBACI0320K performs analog current signal conversion from field devices into digital values for Modicon STB distributed I/O communication. The module supports four input channels with 0 mA to 20 mA measurement range and 15 bit plus sign conversion resolution.

The module operates as part of an automation island architecture where STB I/O segments exchange process data through a network interface module. The kit includes the STBACI0320 analog input module, STBXBA2000 mounting base, STBXTS2100 spring clamp connector, and STBXTS1100 screw terminal connector.

The input assembly supports channel-level signal wiring through removable terminal connectors and maintains IP20 protection for cabinet-mounted installations. The analog update cycle is specified at 10 ms for process data refresh.

Backplane Bus Communication and I/O Density Scaling

The Modicon STB platform uses modular distributed I/O architecture with configurable island expansion through communication interfaces. The STBACI0320K contributes four analog input points to the island configuration while maintaining compatibility with standard STB mounting and power distribution components.

The module supports hot swap fallback operation when installed with standard NIM configurations. Firmware and network compatibility depend on the selected STB network interface module and controller platform.

Frequently Asked Questions

Q: What type of field signal does the STBACI0320K accept?
A: The module accepts four analog current input channels from 0 mA to 20 mA field signals and converts them into digital values with 15 bit plus sign resolution.

Q: Can the STBACI0320K be replaced while the STB island remains powered?
A: The module supports hot swapping fallback operation when used with standard NIM configurations. Actual replacement procedures depend on the installed STB network architecture.

Q: Which mounting components are required for installation?
A: The kit includes the STBXBA2000 base and terminal connectors. It is compatible with STBXBA2000 mounting base and STBPDT3100/3105 power distribution modules.

Field Installation Guidelines

Install the STBACI0320K on the specified STBXBA2000 mounting base within an enclosure providing IP20 environmental protection.

Connect analog current loop wiring according to the terminal assignment of the STB module. Separate analog signal cables from high-voltage power wiring and switching circuits to reduce electrical interference.

Use shielded field wiring where required by the instrumentation design. Connect cable shields according to the control cabinet grounding scheme and avoid multiple uncontrolled grounding points.

Verify that the selected NIM, power distribution module, and controller configuration support the STB island layout before commissioning. Confirm terminal connections, module addressing, and network communication status after installation.

---