
A-53867-1817 rev02(9/9)
5. Input/Output signal
Refer to following document to use Safety Programmable Safe-related I/O signals.
FANUC Series 16i/18i/21i–TB/MB FANUC Series 18i-MB5 Dual Check Safety
Programmable Safe-related I/O signals Specifications A-78882
6. Parameter
In addition to the standard parameter of Dual Check Safety, the next setup is required
in order to use this function.
The speed surveillance of a spindle axis is still effective internally during spindle
excitation off state (SGD=0, EXOF=1) (Guard is open, Spindle enabling switch off).
Therefore, under the surveillance of spindle-axis excitation off, it is necessary to change
the safe limited speed not to usually attain, even if it turns spindle axis by hand. Since
the safe speed selection signal SPA1 connected to status of spindle enabling switch,
please set a suitable safe speed as a parameter.
SPA1 SPB1 Parameter
Number
0 0 4372 Limited Spindle Speed 1 (min-1)
1 0 4438 Limited Spindle Speed 2 (min-1)
0 1 4440 Limited Spindle Speed 3 (min-1)
1 1 4442 Limited Spindle Speed 4 (min-1)
For example, if SPB1 is not used, and Spindle enabling switch is connected to SPA1, set
as follows
No.4372 (Limited Spindle Speed 1 ) = 200 min-1 ( In case of enabling switch off)
No.4438 (Limited Spindle Speed 2) = 50 min-1 ( In case of enabling switch on)
Refer to following document for the detail for these parameters.
FANUC Series 16i/18i/21i–TB/MB FANUC Series 18i-MB5 Dual-check Safety
Improvement of Safe Speed Monitoring and Safe Machine Position Monitoring
Specifications A-78735