Fagor DDS, Hardware Manual

Page: 164 / 386

   Drive modules
188
3.
DRIVE MODULES
Co
mpact d
riv
es
164
DDS
HARDWARE
Ref.1310
Function of the connectors
Power connectors
The power connector on top of each drive module are used to connect the
drive to mains (R, S and T) and to the motor (U, V and W).
There is another connector at the bottom of the module to connect the
Ballast resistor (Ri, Re) and to access the power bus (L+, L-).
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 en-
try holes) and other data regarding the screw-on terminals of the power
connectors according to drive model:
NOTE. Note that the ACD/SCD/CMC 1.25/2.35/2.50 and SCD 2.75 mod-
els do not have an internal a Ballast resistor and, therefore, the power
bus will not be charged if a (L+, Ri) configuration is used.
Pin Ri has no
function in these modules. FAGOR provides the external resistor asso-
ciated with each module as an accessory with the unit and the configura-
tion will always be (L+, Re).
WARNING. Note that this connector is only meant for connecting the Bal-
last resistor. It must never be used to connect a capacitor module be-
cause it could destroy the power module.
T. H3/19 Technical data of the terminals of the power connector.
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 (Nm) 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
Wire data
Length to strip (mm) 7 10 12 12
WARNING. When connecting the drive module with the motor connect
terminal U of the drive module 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 connect-
ed 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 pro-
ceed 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 bus
down to safe values (< 42 V DC ). The green indicator DC BUS ON be-
ing turned OFF does not mean that the power bus may be handled or ma-
nipulated. The discharge time depends on the number of elements
connected and it is about 4 minutes.