990NAD23020

Configured for tap link connection in Modicon Quantum, Momentum, TSX Micro, and Premium automation platforms, the Schneider Electric 990NAD23020 (990NAD23020 Modbus Plus Tap) provides direct physical execution of network node interface signals via a single RJ45 port.

Hardware Specifications

Parameter	Specification
Model	990NAD23020
Brand	Schneider Electric
Product Type	Modbus Plus Tap
Material	Plastic
Electrical Connection	1 RJ45 connector
Mounting Support	DIN rail
Range Compatibility	Modicon Quantum, Momentum, TSX Micro, Premium
Ingress Protection	IP20
Dimensions	9.0 cm x 8.5 cm x 20.2 cm
Weight	360.0 g

Backplane Bus Communication Velocity & Network Integrity

The 990NAD23020 Modbus Plus tap maintains signal attenuation limits across deterministic trunking architectures. Built to integrate with Modicon automation platforms, the module preserves deterministic message propagation delays across the physical layer while isolating point-to-point drop cables from backplane bus noise interference. The structured RJ45 connection interface ensures stable pinout alignment for reliable token-passing industrial protocol performance.

Frequently Asked Questions

Q: Does the 990NAD23020 require an active power supply to execute signal tapping?

A: No, the unit functions as a passive network tap interface that facilitates direct physical connection without drawing auxiliary control power from the system backplane.

Q: Can this unit be mounted directly on a panel surface without DIN rail hardware?

A: The integrated housing enclosure is designed specifically for standard DIN rail mounting to maintain secure physical ground termination and mechanical stability under field vibration conditions.

Field Installation Guidelines

1. Snap the module securely onto the standard 35 mm DIN rail inside the local control enclosure.
2. Verify that the grounding clip located on the rear of the plastic enclosure makes continuous metal-to-metal contact with the DIN rail.
3. Insert the incoming Modbus Plus network cable into the integrated RJ45 port until the locking tab fully engages.
4. Maintain a minimum bending radius of 50 mm for all connected communication cables to prevent internal wire strain and impedance shifts.

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