YASKAWA
TOEPC71061782C GA800 Drive Installation & Primary Operation
75
Note:
•
When you use a drive with a built in safety function, you must replace it 10 years after first use.
•
A maximum of 3 ms will elapse from when terminals H1 or H2 shut off until the drive switches to the
“
Safe Torque Off
”
status. Set the OFF
status for terminals H1 and H2 to hold for at least 3 ms. The drive may not be able to switch to the
“
Safe Torque Off
”
status if terminals H1
and H2 are only open for less than 3 ms.
◆
Using the Safe Disable Function
■
Safe Disable Circuit
The Safe Disable circuit has two isolated channels (terminals H1 and H2) that stop the output transistors. The input
can use the internal power supply of the drive.
Set the EDM function to one of the MFDO terminals
[H2-xx = 21 or 121]
to monitor the status of the Safe Disable
function. This is the
“
Safe Disable monitor output function
”
.
Figure 16.2 Safe Disable Function Wiring Example
■
Connect Safe Disable Input Contacts to Multiple Drives
To Use the Drive Internal Power Supply
shows an example of how to connect Safe Disable contacts.
From the terminals HC-SN of drive 1, supply the power for the Safe Disable function for the applicable drives. These
conditions limit the number of units to connect:
•
Internal power supply capacity
•
Number of MFDIs used
•
Supply current to the external sensors
