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Main Circuit Terminal Functions
Table 3.1 Main Circuit Terminal Functions
Terminal
Description
Function
Page
R/L1
Main circuit power supply input
Connects line power to the bypass
S/L2
T/L3
U/T1
Drive output
Connects to the motor
V/T2
W/T3
For 208 Vac: 100 Ω or less
For 480 Vac: 10 Ω or less
Grounding terminal
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Wire Gauge and Tightening Torque Specifications
Note:
1.
For 0 to 100 A, use a minimum of 60 °C - 75 °C copper wire.
2.
For above 100 A, use a minimum of 75 °C copper wire.
3.
Wire gauge recommendations based on drive continuous current ratings using 75 °C 600 Vac vinyl-sheathed wire assuming ambient
temperature within 40 °C and wiring distance less than 100 m.
• Consider the amount of voltage drop when selecting wire gauges. Increase the wire gauge when the voltage drop is greater
than 2% of motor rated voltage. Ensure the wire gauge is suitable for the terminal block. Use the following formula to
calculate the amount of voltage drop:
Line drop voltage (V) = 3 × wire resistance (Ω/km) × wire length (m) × current (A) × 10
-3
•
Refer to UL Standards Compliance on page 443
for information on UL compliance.
Table 3.2 Main Input Circuit Wiring Tightening Torques and Wire Gauges
Z1000 Bypass
Model Z1B1
With Option PM Circuit Breaker CB1
Standard Non-Fused Input Disconnect Switch S1
208
Vac
480
Vac
Current Rating
(A)
Wire Size Range
(AWG)
Tightening
Torque (lb. in.)
Current Rating
(A)
Wire Size Range
(AWG)
Tightening
Torque (lb. in.)
D002
B001
30
14-10
or
8-3/0
50
or
120
20
14-8
19
D003
B002
D004
B003
D007
B004
D010
B007
D016
B011
–
B014
–
B021
45
12-6
40
D024
B027
50
D030
B034
63
6-2
50
–
B040
100
–
B52L
100
8-2/0
200
D046
B052
D059
B065
–
B077
150
8-3/0
120
–
B096
150
D074
–
115
8-2/0
200
D088
–
150
8-3/0
120
D114
–
175
4-4/0
225
–
B124
250
4-40
225
D143
B156
3/0-350 kcmil
225
250
3/0-350 kcmil
225
D169
B180
3.4 Input and Output Power Wiring Connections
62
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
