1. Product Overview

2. Core Functions

1. Transmits DC5V bus signal, DC24V power supply, emergency stop & safety interlock signals between PC-20 main CPU and cabinet inner terminal assembly (R10092-718 + RPN710-193A-6-10).

2. Routes analog control signals to NEW02-2 analog output module and servo command signals toward N2-3 servo interface board.

3. Connects internal cabinet wiring with external safety circuit and peripheral I/O terminal wiring, centralizes signal transmission of whole rack backplane system.

3. Electrical & Environmental Specifications

• Rated working voltage: DC5V (logic signal), DC24V (power & safety circuit)

• Operating temperature: 0℃ ~ +40℃; Storage temperature: -20℃ ~ +50℃

• Ambient humidity: 10%~80% RH, non-condensing; Max working altitude ≤1000m

• Installation position: Fixed inside XRC control cabinet, between rack backplane and terminal block set nearby PC-20

4. Common Fault Symptoms

1. Intermittent teach pendant communication failure, random servo OFF alarm caused by aging inner core wire or oxidized plug terminals.

2. Abnormal analog output of NEW02-2 module leading to welding actuator malfunction due to broken analog signal lines inside the harness.

3. Unstable emergency stop circuit, frequent E-stop fault alarm from partial wire breakage or poor crimp contact of safety wiring.

5. Replacement & Safety Operation Rules

1. Cut off robot controller main AC power and wait ≥15min for residual voltage discharge; hot plug/unplug is strictly forbidden.

2. Mark each connector pin number and terminal wiring position before removing faulty S53845-2, install replacement strictly following original wiring layout.

3. Complete full wiring restoration, power on sequentially, test single-axis jog movement, peripheral I/O and analog output function after installation.

6. Compatibility Scope