ABB IMDSI22 Digital Input Module

Configured for multi-range discrete signal acquisition in the ABB Symphony INFI 90 control system, the ABB IMDSI22 (IMDSI22 Digital Input Module) provides 16 input channels for voltage, current, and pulse signals. The module accepts 24-250 VDC inputs, 4-20 mA signals, and pulse inputs from 0.1-10 kHz, with 2500 VDC isolation.

Hardware Specifications

ABB Symphony INFI 90 Digital Signal Processing

The IMDSI22 provides 16 discrete input channels within the Symphony INFI 90 I/O architecture. Its input circuitry accommodates voltage, current, and pulse signal types rather than a single fixed discrete voltage level. The specified 24-250 VDC voltage range covers multiple DC field signal levels, while the 0.1-10 kHz pulse range supports frequency-based input signals.

The module specifies 2500 VDC isolation between the input circuitry and associated electrical interfaces. This isolation rating should be considered when wiring field signals with different potential references.

The supplied data also identifies 32 jumpers for configuration and a +5 VDC power requirement of 115 mA.

Frequently Asked Questions

Q: How many input channels does the IMDSI22 provide?
A: The module provides 16 input channels.

Q: What signal ranges are specified for the IMDSI22?
A: The supplied specifications list 24-250 VDC voltage inputs, 4-20 mA current inputs, and pulse inputs from 0.1-10 kHz.

Q: What isolation rating is specified?
A: The input module is specified with 2500 VDC isolation voltage.

Field Installation Guidelines

• Verify the module type and terminal assignment against the applicable Symphony INFI 90 system documentation before wiring.
• Confirm the field signal category and voltage/current range before connecting each input channel.
• Keep field signal wiring separated from high-current power conductors where practical to reduce induced electrical noise.
• Use appropriate cable shielding for low-level or pulse-related signals when required by the installation environment.
• Connect cable shields according to the site grounding scheme and avoid creating unintended ground loops.
• Confirm polarity for DC field wiring before energizing the module.
• For pulse inputs, maintain appropriate cable routing and termination practices to prevent coupled switching noise from affecting frequency measurement.
• Verify the module supply requirement of +5 VDC and the specified 115 mA current requirement before installation.
• The supplied source data contains conflicting dimensional and weight listings. The detailed technical specification lists 73.66 x 358.14 x 269.24 mm and 0.2 kg; another listing states 17.8 x 5.1 x 2.5 cm and 0.2 kg. Confirm the physical form factor against the installed hardware documentation before mechanical installation.