YASKAWA CIPR-GA50C series Technical Manual page 202

5.6 Safe Disable Input
Number of possible units to connect
Power Supply
Internal power supply
(Drive 1)
External power supply
*1 This is when you use a maximum of 150 mA.
*2 24 V, 12 mA is necessary for each drive.
Use this formula to calculate the number of units to connect:
• n: Number of units to connect
• Io
: Maximum current that the power supply can supply (234 mA for the internal power supply)
max
• I : Current consumed per MFDI (6 mA)
MFDI
• n
: Maximum number of MFDIs that can be activated at the same time (maximum of 7-channel)
MFDI
• I
: Current externally supplied for sensor power supply (maximum of 150 mA)
sensor
• I
: Current consumed by Safe Disable terminals H1 and H2 (12 mA)
safety
Note:
Round the values to the first decimal place.
■
Enabling and Disabling the Drive Output ("Safe Torque Off")
Refer to Figure 5.26 for an example of drive operation when as the drive changes from the "Safe Torque Off"
status to usual operation.
202
Figure 5.25 Connection Example to Use 24 V External Power Supply
Digital Inputs
Yes
(7-channel input)
No
24 V Output
*1
Yes
No
*1
Yes
No
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YASKAWA SIEPC71061753A GA500 Technical Manual
Number of Drive Units
1
13
4
17
Different for different external power
*2
supply capacities