Manual MCD
+
5 Mains Supply Unit
The MCD power stage can be supplied by means of an unregulated filtered
DC voltage from 24 to 70 V
DC
.
Admissible voltage range: 24 to 70 V
DC
Nominal voltage: 70 V
DC
The voltage must not drop under 20 V and rise over 85 V, not even for a short time
(> 1 msec). If the external voltage breaks down under 20 V or rises over 85 V, the MCD
detects undervoltage.
Fig. 16:
Mains supply unit
For calculation and connection of the supply unit, the following instructions must
be followed:
•
The transformer must be constructed with reinforced or double
insulation.
•
The calculation of the F2 fuse depends on the preset phase current
und the motor load:
Recommended values:
Phase current
Fuse
<= 1 A
T2A
2 A
T4A
3 A
T6A
4 A
T8A
5 A
T10A
>= 6 A
T12A
•
For the load capacitor, a value of 1,000
μ
F per Amp of motor current should be
calculated.
MA 2102-A005 GB
20
•
Use shielded cables for DC supply.
