English-4
Power Terminal Block (A Frame Shown)
Power Terminal Block Specifications
Input Power Conditions
I/O Terminal Block Specifications
Refer to the PowerFlex 4 User Manual for recommendations on
maximum power and control cable length.
Power Wiring
Power Wire Rating Recommended Copper Wire
Unshielded 600V, 75°C (167°F) THHN/THWN 15 Mils insulated, dry location
Shielded 600V, 75°C or 90°C (167°F or 194°F) RHH/RHW-2 Belden 29501-29507 or equivalent
Shielded Tray rated 600V, 75°C or 90°C (167°F or 194°F) RHH/RHW-2 Shawflex 2ACD/3ACD or equivalent
V/T2T/L3S/L2R/L1 U/T1 W/T3
BR+
BR-
Terminal Description
R/L1, S/L2 1-Phase Input
R/L1, S/L2, T/L3 3-Phase Input
U/T1 To Motor U/T1
=
Switch any two motor leads to
change forward direction.
V/T2 To Motor V/T2
W/T3 To Motor W/T3
BR+, BR- Dynamic Brake Resistor Connection [0.75 kW (1 HP) ratings and higher]
Safety Ground - PE
Frame Maximum Wire Size
(1)
Minimum Wire Size
(1)
Torque
A 3.3 mm
2
(12 AWG) 0.8 mm
2
(18 AWG)
1.7-2.2 N-m (16-19 lb.-in.)
B 5.3 mm
2
(10 AWG)
1.3 mm
2
(16 AWG)
(1)
Maximum/minimum sizes that the terminal block will accept - these are not recommendations.
Input Power Condition Corrective Action
Low Line Impedance (less than 1% line reactance) • Install Line Reactor
(2)
• or Isolation Transformer
Greater than 120 kVA supply transformer
Line has power factor correction capacitors
Line has frequent power interruptions
Line has intermittent noise spikes in excess of 6000V (lightning)
Phase to ground voltage exceeds 125% of normal line to line voltage • Remove MOV jumper to ground.
• or Install Isolation Transformer with
grounded secondary if necessary.
Ungrounded Distribution System
(2)
Refer to Appendix B of the PowerFlex 4 User Manual for accessory ordering information.
I/O Wiring Recommendations
(3)
Wire Type(s) Description Minimum Insulation Rating
Belden 8760/9460
(or equiv.)
0.8 mm
2
(18AWG), twisted pair, 100% shield with
drain.
300V
60 degrees C
(140 degrees F)
Belden 8770
(or equiv.)
0.8 mm
2
(18AWG), 3 conductor, shielded for
remote pot only.
(3)
If the wires are short and contained within a cabinet which has no sensitive circuits, the use of shielded wire may not be
necessary, but is always recommended.
Maximum Wire Size
(4)
Minimum Wire Size
(4)
Torque
1.3 mm
2
(16 AWG) 0.13 mm
2
(26 AWG) 0.5-0.8 N-m (4.4-7 lb.-in.)
(4)
Maximum / minimum that the terminal block will accept - these are not recommendations.
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