Hyundai Hi5/Hi6 Robot — Reading & Clearing Alarms

Hyundai · beginner · 20 min

A Hyundai Hi5 or Hi6 robot reports every fault on the teach-pendant taskbar with an error code, a message and a timestamp. Learn to capture that information, find the real cause, and clear the alarm the right way instead of just acknowledging it.

ℹ️ On a Hyundai Hi6, an alarm appears as a notification on the taskbar at the bottom of the teach-pendant screen and blinks for about a minute. It gives you three things: the error code, the message, and the time it happened — capture all three before you clear it.

Where the alarm shows up

Hyundai robots (Hi5 and the newer Hi6 controllers) surface faults on the teach pendant, not a cryptic panel LED. On the Hi6, when an error occurs a notification appears on the taskbar at the bottom of the screen and blinks for about one minute. From that notification you can read three pieces of information:

• the error code,
• the notification message (plain-text description), and
• the time of occurrence.

Those three together are what you record before doing anything else — the code identifies the fault, the message explains it, and the time lets you correlate it with what the cell was doing (a specific move, a tool change, an external signal).

Know your controller generation

The Hi5 controller family covers models such as Hi5-C10 / C20 and Hi5-N00 / N30 / N50, using a multi-processor system with full digital servo control and up to 16 axes simultaneously; the Hi6 is the later generation with the notification-style pendant UI. Knowing which controller you're on tells you which manual's alarm list to use — the concept (code + message + time) is the same, but the exact wording and menus differ between Hi5 and Hi6.

Step-by-step: read and clear an alarm

1. Capture the alarm while it's on screen: error code, message text, and timestamp. Take a photo of the pendant if you can — the notification stops blinking after about a minute.
2. Read the message. Servo/amplifier, encoder, overtravel, collision/torque, and external-signal faults each read differently — the message points you at the subsystem.
3. Remove the physical cause. Clear an overtravel by jogging back into range; let an overheated axis cool; fix the tripped external interlock or the I/O the message names. A servo/encoder fault usually means checking the motor, its feedback cable and connectors.
4. Reset the alarm on the pendant, then re-enable the servo / motors and recover the program from a safe step.
5. If it recurs, use the code + timestamp pattern: an alarm that returns at the same point in the cycle is a real mechanical/electrical cause, not a nuisance — diagnose that point rather than clearing repeatedly.

Why capturing the code matters

Because the notification is transient (blinks ~1 minute) and the pendant history is where the detail lives, the single most useful habit is writing down the exact code and time. It's what lets you look the fault up in the correct Hi5/Hi6 manual and what a Hyundai service engineer will ask for first.

Never do this

Don't clear a servo, collision, or overtravel alarm and immediately re-run at full speed without understanding it — those protect the arm and the people near it. Fix the cause, reset, and step through the recovery at reduced speed. Never defeat a safety interlock to silence a recurring external-signal alarm.