Using Transistors For Input Signals And A 0-V Common In Sinking Mode With An External Power Supply - YASKAWA Varispeed G7 Instruction Manual

Using Transistors for Input Signals and a 0-V Common in Sinking Mode
with an External Power Supply
Set CN5 (shunt connector) on the control board to EXT as shown below for a sequence that uses an NPN tran-
sistor for an input signal (0-V common and sinking mode) and an external +24-V power supply.
MCCB
R
3-phase power
S
T
Forward Run/Stop
Reverse Run/Stop
External fault
Fault reset
Multi-function
contact inputs
Multi-step
Factory
speed setting 1
settings
Emergency stop
(NO contact)
Frequency
External
setter
frequency
references
Note:
Set EXT as shown at the right even for
a PNP input signal transistor
sequence connection (+24-V
common/sourcing mode) with a +24-V
external power supply.
Pulse train input
Frequency setting
adjustment
2 k Ω
3
0 to +10 V
2 k Ω
2
1 4 to 20 mA P
P
Fig 10.16
+ 1 + 2 -
R/L1
S/L2
Inverter
T/L3
S1
S2
S3
S4
S5
S12
+24 V 8 mA
CN5 (EXT setting)
External
+24V
SC
+24 V
E(G)
Shield wire
connection terminal
Master speed pulse train
RP
0 to 32 kHz (3 kΩ)
High level: 3.5 to 13.2 V input
Frequency setting power
+V
+15 V 20 mA
Master speed reference
A1
0 to 10 V (20 kΩ)
A2
Master speed reference
AC 4 to 20 mA (250 kΩ)
0 to 10 V (20 kΩ) input
0 V
S12
+24 V 8 mA
CN5 (EXT setting)
External
+24V
SC
+24 V
Wiring Examples
B1 B2
U/T1
Motor
V/T2 IM
W/T3
Ground
10
27
10-