Mori Seiki Ex Alarm List Upd Jun 2026

These are some of the most frustrating alarms. The ATC sequence has multiple steps (arm down, arm rotate, drawbar unclamp).

In this article, we provide a deep dive into the most common EX alarms across popular Mori Seiki models (NH, SH, NL, NV, DuraVertical, and CL Series), explain their root causes, and offer step-by-step solutions. mori seiki ex alarm list

| EX Code | Message | Solution | | --- | --- | --- | | | Operation Denied (Level 1) | Log in as operator using password. | | EX2005 | Program Edit Lock | Turn key switch on main panel to "Edit" (Pos 1). | | EX2010 | APC Active | Automatic Pallet Change in progress. Wait for cycle to finish. Cannot reset while APC arm is moving. | | EX2999 | Watchdog Timer Error | PLC scan time exceeded. Restart control. If persistent, reload PMC parameters via I/O. | These are some of the most frustrating alarms

| EX Alarm Code | Message | Cause | Common Fix | | --- | --- | --- | --- | | | +24V Power Supply Failure | Blown 24V power supply unit or short circuit in a sensor. | Check input voltage to power supply; unplug peripheral cables to isolate short. | | EX1001 | Emergency Stop | Main E-stop button pressed or chain circuit broken. | Twist and release mushroom buttons. Check door switch chain. | | EX1002 | Door Interlock Violation | Safety relay detected door open during program run. | Close the safety door. If bypassed, reset the safety relay manually. | | EX1003 | Hydraulic Power Off | Hydraulic pump contactor (KM1) did not engage. | Check hydraulic motor overload relay (thermal). Check phase sequence. | | EX1004 | Spindle Unit Alarm | Spindle amplifier (SPM) generated an alarm (e.g., overheat, overload). | Look at SP amplifier LED codes (usually 1, 2, or A). Check cooling fans. | | EX Code | Message | Solution |

: When a tool setter arm—the machine's "fingertip"—is out of position, EX0945 (ROBOT COMMAND ERROR) or EX2949 (SPINDLE NOT AT ORIENTATION POS.) prevents the spindle from crashing into the sensitive probe. A Day in the Life of a Troubleshooter