Drives
3.
180
Ref.1912
DDS
HARDWARE
· 158 ·
Function of the connectors
Power connector
The power connector on top of each drive are used to connect the drive to
mains (R, S and T) and to the motor (U, V and W).
The ground connection of the cable shields in made from the vertical plate next
to the connectors.
The following table shows the values for gap, tightening torque (wire entry
holes) and other data regarding the screw-on terminals of the power
connectors according to drive model:
T. H3/20 Terminals of the power connector. Technical data.
ACD|SCD|CMC SCD
1.08
1.15
1.25 2.35
2.50
2.75
Connector data
Nr of poles 6 6 6 6
Gap (mm) 7.62 7.62 10.16 10.16
Min./max. tightening torque (N·m) 0.5/0.6 0.7/0.8 1.7/1.8 1.7/1.8
Screw thread M3 M3 M4 M4
Min./max. section (mm²) 0.2/4 0.2/6 0.75/16 0.75/16
Rated current In
(A) 20 41 76 76
Connection data
Length to strip (mm) 7 10 12 12
WARNING. When connecting the drive with the motor connect terminal U of
the drive with the terminal corresponding to the U phase of the motor.
Proceed the same way with the terminals V-V, W-W and PE-PE. Otherwise,
it may not work properly.
The cable hose used must have a metallic shield which must be connected
to the ground terminal of the drive and to that of the motor (i.e. at both ends)
in compliance with the CE seal.
WARNING. Observe that before handling these terminals, you must
proceed as indicated and in the following order:
Disconnect the mains voltage at the electrical cabinet.
Wait a few minutes before handling these terminals.
The power supply needs time to decrease the voltage of the power DC
BUS down to safe values (< 60 V DC). The green indicator DC BUS ON
being turned OFF does not mean that the power bus may be handled or
manipulated. The discharge time depends on the number of elements
connected and it is about 4 minutes.
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