
B-63494EN/02 7.START-UP
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7.2 START-UP OF THE DUAL CHECK SAFETY FUNCTION
7.2.1 Initial Start-up
Main flow
Disable dual check
safety function
Machine start-up
FSSB I/O setting
Safety parameter
input
Step 1
Initial state
First, check that the machine starts up normally when the dual check
safety function is disabled.
Preparation 1 Disable the dual check
safety function.
Bit 6 of PRM No. 1902 = 0
Preparation 2 Disable output (MCF), from
I/O, that indicates MCC is
turned off.
Connect the relay for
driving based on I/O output
CAUTION
When the dual check safety function is disabled, the
MCC on enable signal (MCF) is not output. So,
make a connection to temporarily disable MCF. To
enable the dual check safety function, reset the
temporary connection.
Step 2
FSSB I/O setting
Make the same settings as for the pulse module.
Example: When a two-axis amplifier is set as slave 1, and FSSB I/O
unit is set as slave 2
Make the settings indicated in the table below.
Parameter setting Meaning
Bit 0 of No. 1902 = 1 Manually sets the FSSB setting mode.
Bit 4 of No. 1905 = 1 Uses the first FSSB I/O unit.
No. 1910 = 0 Sets the value of parameter No. 1023 less 1
when the slave is an amplifier
No. 1911 = 1 Sets the value of parameter No. 1023 less 1
when the slave is an amplifier
No. 1912 = 16 16 when the slave is a FSSB I/O unit
Nos. 1913 to 1919 = 40 40 when there is no slave