YASKAWA E7 Installation Manual page 8

Drive Model Nominal
CIMR-E7U Hp
4185 300/350
4220 400/450
4300 500+
* Use 75°C copper wire or equivalent.
Determine the wire size for the main circuit so that line voltage drop is within 2% of the rated voltage. Line
voltage drop is calculated as follows:
IMPORTANT
Line voltage drop (V) =
Prior to removing any protective cover or wiring any part of the Drive, remove all power sources, including
main input power and control circuit power. Wait a minimum of 5 minutes after power removal, before
WARNING
removing any cover. The charge lamp located within the Drive should be off prior to working inside. Even if
the charge lamp is off, one must measure the AC input, output, and DC Bus potential to insure safe levels
prior to resuming work. Failure to adhere to this warning may result in personal injury or death.
Table 2.2 480Vac Wire Sizes and Connector Specifications
Terminal Symbol
R/L1, S/L2, T/L3, ,
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L33
3
l s l s l
r/ 1, 200/ 200, 400/ 400
2 2
R/L1, S/L2, T/L3, ,
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L33
3
l s l s l
r/ 1, 200/ 200, 400/ 400
2 2
R/L1, S/L2, T/L3, ,
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L33
3
l s l s l
r/ 1, 200/ 200, 400/ 400
2 2
3
x wire resistance (Ω/km) x wire length (m) x current (A) x 10
Electrical Installation 2 - 7
Clamping
Terminal
Screws
M8
1
M8
M8
M16
M4
M8
1
M8
M8
M16
M4
M8
1
M8
M8
M8
M16
Recommended
Torque
Wire Size AWG
lb. in.
2
(mm )
(N•m)
88.5 300 X 2P
(10.0) (152 X 2P)
88.5 300 X 2P
(10.0) (152 X 2P)
88.5 2/0
(10.0) (67.4)
867.4 3/0 X 2P
(98.0) (85 X 2P)
12.4 14
(1.4) (2.1)
88.5 500 X 2P
(10.0) (253 X 2P)
88.5 400 X 2P
(10.0) (203 X 2P)
88.5 2/0
(10.0) (67.4)
867.4 250 X 2P
(98.0) (127 X 2P)
12.4 14
(1.4) (2.1)
88.5 700 X 2P
(10.0) (355 X 2P)
88.5 600 X 2P
(10.0) (304 X 2P)
88.5 2/0
(10.0) (67.4)
867.4 400 X 2P
(98.0) (203 X 2P)
12.4 14
(1.4) (2.1)
-3
Wire Type
600Vac
UL Approved
vinyl-sheathed
or equivalent