PC-20
Description
1. Product Overview
2. Main Functions
Runs INFORM III robot programs, handles trajectory interpolation, coordinate conversion and logic operation, and stores robot mechanical parameters, origin position data and user programs.
Sends control signals via backplane bus to all auxiliary boards: I/O commands to MYCENTER-0, servo instructions to N2-3, and analog control signals to MEW02-2.
Communicates with teach pendant through serial interface for program upload/download and fault information display. An onboard backup lithium battery keeps parameter data intact after power failure.
Monitors safety circuits such as emergency stop and safety door signals and triggers shutdown and alarm upon abnormal conditions.
3. Electrical and Environmental Specifications
Input Power: +5VDC from cabinet backplane
Working Temperature: 0℃~+40℃; Storage Temperature: -20℃~+50℃
Humidity: 10%~80% RH, non-condensing; Max working altitude ≤1000m
Onboard parts: backup lithium battery holder, serial port, ROM and RAM chips
4. Common Failures
Teach pendant no display or communication loss, usually caused by damaged power IC or PCB corrosion from battery leakage.
Startup error alarms and failed origin calibration due to damaged memory and lost parameters.
Intermittent servo shutdown and random servo alarms caused by unstable bus connection with N2-3.
Total peripheral I/O malfunction from broken communication between PC20 and MYCENTER-0.
5. Replacement & Safety Rules
Cut off the robot’s main AC power and wait over 15 minutes to release residual voltage; hot plugging is forbidden.
Label all connecting cables before dismounting the faulty board and fit the replacement into the original slot.
Reconnect wires as marked, replace backup battery when necessary, then test startup, single-axis jogging and peripheral I/O after power-on.
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