Rockwell Automation 160 SSC Series C FRN 7.xx - Manual (Page 19)

Installation and Wiring 2-7
Long Motor Cable Effects
Reflected Wave Protection
The drive should be installed as close to the motor as possible. Installations with
long motor cables may require the addition of external devices to limit voltage
reflections at the motor (reflected wave phenomena). See Table 2.E for
recommendations.
Important: Both Reflected Wave and Capacitive Current Considerations need
to be taken into account when determining motor cable lengths
(see Table 2.E and Table 2.F). The use of an external device to
limit reflected wave phenomenon may effect the accuracy of
Bulletin 160 current sensing.
The reflected wave data applies to all frequencies 2 to 8 kHz. For 230V ratings,
the maximum cable length recommendations are the same as the capacitive current
recommendations (see Table 2.F).
Cable Length Recommendations – Reflected Wave Table 2.E
➊ Cable lengths listed are for PWM frequencies of 2 kHz. Refer to publication 1204-5.1 for cable length recommendations at
other PWM frequencies.
➋ The maximum peak-to-peak voltage of the drive is 1400V due to the minimum on/off time software.
Reflective Wave Testing has been done on cable lengths up to 160 meters (600 feet). See Table 2.F for capacitive current
recommendations.
380-
460V
Ratings Motor
Insulation
Rating Motor Cable Only RWR at Drive ➊ Reactor at Motor
Shielded Unshielded Shielded Unshielded Shielded Unshielded
feet meters feet meters feet meters feet meters feet meters feet meters
4.0 kW
(5 HP) 1000 Vp-p 45 13.7 20 6.1 525 160 600 183 325 99.1 300 91.5
1200 Vp-p 90 27.4 40 12.2 525 160 600 183 525 160 425 130
1600 Vp-p ➋ 525 160 475 145 525 160 600 183 525 160 600 183
2.2 kW
(3 HP) 1000 Vp-p 40 12.2 40 12.2 525 160 600 183 225 68.6 250 76.2
1200 Vp-p 90 27.4 60 18.3 525 160 600 183 325 99.1 425 130
1600 Vp-p
➋ 525
160 500 152 525 160 600 183 525 160 600 183
1.5 kW
(2 HP) 1000 Vp-p 40 12.2 40 12.2 425 130 600 183 325 99.1 300 91.5
1200 Vp-p 90 27.4 60 18.3 425 130 600 183 425 130 450 137
1600 Vp-p ➋ 500 152 500 152 425 130 600 183 540 165 600 183
0.75 kW
(1 HP) 1000 Vp-p 55 16.8 40 12.2 325 99.1 600 183 325 99.1 350 107
1200 Vp-p 125 38.1 60 18.3 325 99.1 600 183 500 152 450 137
1600 Vp-p ➋ 500 152 500 152 325 99.1 600 183 500 152 600 183
0.55 kW
(0.75 HP) 1000 Vp-p 45 13.7 40 12.2 300 91.5 600 183 300 91.5 300 91.5
1200 Vp-p 125 38.1 60 18.3 300 91.5 600 183 500 152 500 152
1600 Vp-p ➋ 500 152 500 152 300 91.5 600 183 500 152 600 183
0.37 kW
(0.5 HP) 1000 Vp-p 45 13.7 90 27.4 300 91.5 425 130 300 91.5 425 130
1200 Vp-p 125 38.1 180 54.9 300 91.5 425 130 500 152 500 152
1600 Vp-p ➋ 500 152 500 152 300 91.5 425 130 500 152 500 152