Baldor MDH1A05TB-RC23, Installation Manual

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3-14 Basic Installation MN1901
3.4.7 External customer supplied 24V control supply
Depending on model (catalog numbers MDH xxxxx - xxx 3 ) a 24VDC control supply must be
provided to power the control electronics. This is useful for safety reasons where AC power
needs to be removed from the power stage but the control electronics must remain powered to
retain position and I/O information. It is recommended that a separate fused 24V supply is
provided for the MintDrive
II
. If other devices are likely to be powered from the same 24V
supply then a filter (Baldor catalog number FI0014A00) should be installed to isolate the
MintDrive
II
from the rest of the system.
Location Connector X1 / X1A
Part number MDH xxxxx - xxx 3
Nominal input voltage 24V
Range 20.4-28.8VDC
Input current
(maximum)
1.75A continuous (4A power on surge)
Tightening torque for terminal block connections is 0.5-0.6Nm (4.4-5.3 lb-in)
Note: Connect 24V to connector X1 only if your model has this feature. Connecting 24V
to a model that does
not require an external 24V supply (MDH xxxxx - xxx 0 ) could
damage the unit.
Note: The label on filter FI0014A00 correctly indicates that it is designed for connection
to AC power supplies. However, this filter has been tested and is suitable for use
with a 24VDC input as indicated in Figure 6. Do not attempt to use an alternative
AC power filter as a 24VDC input filter.
Customer supplied
24VDC (fused)
+24V
24V filter *
(optional)
GND
Single-phase model
shown for illustration
purposes
STAR
POINT
Incoming safety
earth/ground (PE)
If 24V wires are
shielded,
earth/ground
outer shields
using 360º
clamps connected
to backplane.
* An AC input voltage is indicated on the label of filter
FI0014A00, but it may also be used with a 24VDC input.
Figure 6 - Customer supplied 24V supply connections