Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 138)

Chapter 6
Installation
6-14
Power Wiring Procedure The following procedure provides the steps needed to properly perform the
power wiring connections to the 1395 drive.
Using Table 6.F, verify that the motor field is compatible with the DC field
voltage output of the drive.
Table 6.F
Standard Field Voltage Output
AC Incoming
Voltage to Drive
230VAC
380VAC
415VAC
460VAC
DC Supply Output
Voltage to Field
120-150VDC
200-250VDC
220-270VDC
240-300VDC
1. Connect the motor armature and field leads to produce proper direction
of motor rotation. Table 6.G lists the connections required to produce
counterclockwise rotation of the motor when viewed from the
commutator end with a positive speed reference input to the drive.
Table 6.G
Motor Connections for CCW Rotation
Connection
Motor Field
Drive Terminal
Connection
TB1–3
TB1–4
TB2–1
TB2–2
TB7-1
TB7-3
A1
A2
A1
A2
Motor Lead
F1(+)
F2 (–)
F1(+)
F2 (–)
F1(+)
F2 (–)
A1 (+)
A2 (–)
A1 (+)
A2 (–)
Drive
1 – 30 HP, 230VAC
2 – 60 HP, 460VAC
40-100 HP, 230VAC
75-200 HP, 460VAC
125-300 HP, 230VAC
250-600 HP, 460VAC
1-100 HP, 230VAC
2-200 HP, 460VAC
125-300 HP, 230VAC
250-600 HP, 460VAC
Motor Armature
Refer to Figures 6.8 and 6.9 for power wiring with a standard field
voltage. Note that 125-600 HP construction requires field voltage
semiconductor fuses rated at 50A (use FWH-R Fuses).
2. The 1395 is supplied with semi conductor fuses for line protection. An
isolation transformer can also be used. In general, the 1395 is suitable
for direct connection to a correct voltage AC line that has minimum
impedance of 3%. If the line is lower impedance, a line reactor or
isolation transformer must be added before the drive to increase line
impedance. If the line impedance is too low, transient voltage spikes or
interruptions can create excessive current spikes that will cause
nuisance input fuse blowing, and may cause damage to the drive power
structure. Refer to Figures 6.8, 6.9 and 6.10 for AC input wiring at the
main fuses and to the IMPORTANT note when determining if a line
reactor or isolation transformer is required for your installation.