Press the SYSTEM key, then the PARAM soft key. Type 8901 and press [NO. SRH] .
On modern systems like the Series 30i/31i/32i , these fans are considered "maintenance parts" that should be periodically inspected and replaced as they age. FANUC Series 30i/31i/32i-MODEL B MAINTENANCE MANUAL
alarm on various CNC systems, such as the 0i-C and 0i-D series. Specifically, modifying fanuc parameter 8901 better
Parameter 8901 is a bit-type parameter that controls how the FANUC control responds to a failure of the system's cooling fan. It directly manages the "701 FAN" alarm. This alarm is a critical safety feature, designed to protect the CNC's sensitive electronics from overheating by warning the operator as soon as the cooling fan stops working.
In the competitive landscape of CNC machining, achieving optimal efficiency and surface finish requires precise control over machine parameters. For users operating Fanuc controls (particularly OIC and similar systems), certain parameters directly impact how the machine handles diagnostic alarms, allowing for temporary workarounds that improve uptime. Press the SYSTEM key, then the PARAM soft key
The primary and most well-known application of Parameter 8901 is as an emergency bypass for the ALM 701 fan alarm. The primary and most well-known application of Parameter 8901 is as an emergency bypass for the ALM 701 fan alarm. In urgent situations where a fan has failed and a replacement is not immediately available, setting will instruct the CNC to "not detect" the fan motor error, thereby masking the alarm and allowing the machine to resume operation.
: In many Series 0i-D or 0i-F controls, this parameter is used to enable the graphical simulation or monitoring window. On modern systems like the Series 30i/31i/32i ,
When a fan fails, a 701 alarm stops the machine to prevent overheating. However, if you have a tight deadline and need to finish a part, this alarm can be a major bottleneck. Adjusting Parameter 8901 offers several advantages: 1. Instant Operational Status
To use a tool effectively, you must first understand what it is—and what it is not. FANUC Parameter 8901 is not a performance-tuning parameter. Instead, it is a .
It allows the machine to continue operating while waiting for a replacement fan, preventing costly production halts.