The ABB PMKHRMRLY12S01, also cataloged as the PMKHRMRLY12S01 Auxiliary Relay Block to DIO Cable, operates as a dedicated hardware component for interconnecting auxiliary relay blocks with digital input/output termination units within Bailey Infi 90 and Net 90 systems.

Terminal Interface Configuration

The PMKHRMRLY12S01 cable assembly features a dual-ended interface designed for industrial cabinet signal routing. The round leg section consists of a 12-core conductor array utilizing 0.75 mm2 (18 AWG) stranded copper wire, while the flat leg section transitions to a 12-way ribbon connector with a 1.27 mm pitch.

Technical Performance Parameters

Interconnect Bus Integration and I/O Density

The cable assembly enables discrete control signal transmission between relay termination blocks and Digital Input/Output (DIO) modules without compromising backplane bus communication velocity. The 12-core wiring layout maintains consistent line impedance to support optimal I/O density scaling while preserving hardware layer firmware flash compatibility across active Infi 90 cabinet racks.

Package Scope

• 1 x ABB PMKHRMRLY12S01 Auxiliary Relay Block to DIO Cable

Cable Routing and Termination Guidelines

• Maintain a minimum fixed bending radius of 30 mm (>= 5 x outer diameter) along all cable conduit runs.
• Avoid tight cable ties or mechanical pinching across the 12-way flat ribbon section to prevent conductor insulation stress.
• Ensure power is disconnected from the target DIO module before seating or unseating the 1.27 mm connector.
• Separate the 300 V RMS rated conductors from high-voltage AC motor power lines to prevent electromagnetic interference.

Technical FAQ

• What is the maximum voltage rating for the PMKHRMRLY12S01 conductors?

  The cable assembly is insulation-rated for up to 300 V RMS at continuous operating temperatures up to 80 deg C.

• What is the maximum continuous current capacity per individual conductor?

  Each conductor in the 12-core assembly supports a continuous current rating of up to 6 A.

• What are the physical specifications of the cable's round leg section?

  The round leg comprises 12 individual copper cores with a cross-sectional conductor area of 0.75 mm2 (18 AWG).

• What pitch standard is used on the flat ribbon connector interface?

  The flat ribbon leg utilizes a standard 12-way connector configuration with a 1.27 mm pin pitch spacing.

• What is the absolute minimum bend radius allowed for fixed cable installation?

  The cable requires a minimum fixed bend radius equal to or greater than 5 times the outer diameter (30 mm).

• What is the operating temperature threshold for industrial panel environments?

  The assembly operates reliably within ambient temperature limits ranging from -40 to +80 deg C.

• Does the PMKHRMRLY12S01 draw internal electrical power from the bus?

  No, the cable is a passive physical inter-module connectivity link and consumes no active power.

• Which control system series utilize this relay block interface cable?

  The cable connects auxiliary relay blocks to digital I/O units across Bailey Infi 90 and Net 90 systems.