Delt VFD Series - Page 6

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At 20mA the input voltage is 5V
DC
.
So the total supply voltage must be ≥13V
DC
(5VDC + 8V
DC
).
The supply voltage must be able to supply at least 20mA.
Internal power supply
In general the 24V
DC
power supply terminal can be used, except on VFD-L, VFD-M,
VFD-S (A and D version) and VFD-VL.
On VFD-B, VFD-E, VFD-F, V FD -S (E version) and VFD-VE the 24V
DC
terminal can
supply 20mA, therefore it depends also on the use of the digital inputs whether 20mA
is available.Connection is as follows (also connect DCM to ACM):
+24VDC
ACI 4-20mA
Sensor
4-20mA
DRIVE
20mA max
Voltage drop
>ca. 8VDC
+
-
ACM
DCM
External power supply
For VFD-L, VFD-M, VFD-S and VFD-VL an external power supply must be used of at
least ≥13V
DC
and ≥20mA. (Delta’s 24V
DC
power supplies are perfect).
For other drives an external power supply can be used.
The external power supply must be connected as follows:
ACM/GND
ACI 4-20mA
Sensor
4-20mA
DRIVE
20mA max
Voltage drop
>ca. 8VDC
+
-
External power
supply
≥ca. 13VDC
-
+