The Number of Possible Units to Connect
|
Power Supply
|
MFDI
|
24 V Output
|
Number of Drive Units
|
|
Internal power supply
(Drive 1)
|
Yes
(8-channel input)
|
Yes 1
|
3
|
|
No
|
15
|
|
No
|
Yes 1
|
7
|
|
No
|
19
|
|
External power supply
|
-
|
Different for different external power supply capacities 2
|
Use the this formula to calculate the number of units to connect:
-
n: Number of units to connect
-
Iomax: Maximum current that can be supplied from the power supply (234 mA for the internal power supply)
-
IMFDI: Current consumed per MFDI (6 mA)
-
nMFDI: Maximum number of MFDIs that can be activated at the same time (maximum of 8-channel)
-
Isensor: Current externally supplied for sensor power supply (maximum of 150 mA)
-
Isafety: Current consumed by Safe Disable terminals H1 and H2 (12 mA)
Note:
Round the values off to the first decimal place.
1
This is when you use a maximum of 150 mA.
2
24 V, 12 mA is necessary for each drive.