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3-12 Basic Installation MN1942
3.4.2 Single-phase or three-phase power connections
Location Connector X1 (Mating connector: Phoenix COMBICON
MSTB 2,5HC/11-ST-5,08)
Nominal input voltage 115 VAC or 230 VAC, 1Φ or 3Φ line to line
Minimum input voltage 105 V AC, 1Φ or 3Φ linetoline(seeNote*)
Maximum input voltage 250 VAC, 1Φ or 3Φ line to line
Note: * The MicroFlex e100 will operate at lower input voltages, although performance
could be impaired. The drive will trip if the DC-bus voltage falls below 50 V or 60%
of the no-load voltage, whichever occurs first.
For three phase supplies, connect supply to L1, L2 and L3 as shown in Figure 3. For single phase
supplies, connect the supply and neutral to any two line inputs, for example L1 and L2.
For CE compliance, an AC filter must be connected between the AC power supply and the
MicroFlex e100. If local codes do not specify dif ferent regulations, use at least the same gauge
wire for earth/ground as is used for L1, L2 and L3.
T ightening torque for terminal block connections is 0.5- 0.6 N·m (4.4-5.3 lb-in). The threaded hole
in the top and bottom of the case may be used as an additional functional earth/ground
connection for signals on connector X3. They may also be used to attach shield or strain relief
clamps. The holes are threaded for M4 bolts no longer than 11 mm (0.43 in) in length.
To earth/ground outer shield,
use 360° clamps connected
to enclosure backplane
AC
Supply
Line (L1)
Route L1, L2, L3 and
earth/ground together
in condui t or cable
Circuit breaker or fuses.
See section 3.4.4
AC filter.
See sec tion
3.4.7
Line (L2)
Line (L3)
STAR POINT
Incoming safety
earth/ground (PE)
Isol ating switch
Connect
earth/ground
to protective
earth on top of
drive
Figure 3 - Single or three-phase power connections
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