VFD68 Variable Frequency Drives
28
Low-Voltage Wiring Connections
Making Low-Voltage Wiring Connections on VFD68Bxx and VFD68Cxx Drives
Low-voltage wiring terminals are located underneath the front cover. See Figure 19 and Table 23.
IMPORTANT:
If using two input devices, both devices must be identical.
Do not
use input devices with
different ranges and operating characteristics.
Table 23: VFD68Bxx and VFD68Cxx Drives Low-Voltage Connections Information
1
(Part 1 of 2)
Terminal
Label
Signal Type
Description
10
+5VDC
Pr 5 VDC supply for P499R transducers (15 mA maximum)
2
Analog Input
Analog Input 1 (AI1) accepts 0
–
5 V or 0
–
10 V DC analog input signals
5
Analog Common
Common for analog inputs
4
Analog Input
Analog Input 2 (AI2) accepts 0
–
5 V, 0
–
10 V, or 4
–
20 mA analog input signals
AM
Analog Output
Provides a 0
–
10 VDC analog output signal corresponding to output frequency
RUN
Open Collector
Transistor Output
VFD Running - Switched low (transistor conducts) when the VFD output frequency
is higher than the start frequency (the motor is running). Switched high (transistor is
off) when the motor is off.
SE
Open Collector
Common
Common for RUN terminal
SO
Open Collector
Transistor Output
Safety Stop Output
S1
Safety Stop Input
Terminals S1 and S2 must connect to terminal SC or the VFD shuts off.
S2
Safety Stop Input
Terminals S1 and S2 must connect to terminal SC or the VFD shuts off.
Figure 19: VFD68Bxx and VFD68Cxx Drives Low-Voltage Connections
10
AM
2
5
4
SO S1
S2
RM
F
IG
:vf
d6
8
_
lw
_v
lt
g_
cn
n
ct
n
s
(+
5
V
)
(A
I1
)
(A
C
O
M
)
(A
I2
)
(S
af
e
ty
S
top
I
n
pu
t)
(S
af
e
ty
S
top
I
n
pu
t)
(C
o
mmo
n
)
(+
2
4
VDC)
(C
o
m
m
o
n
)
(F
o
rw
a
rd
)
( R
e
v
e
rs
e
)
Contact Inputs
(S
af
e
ty
S
top
C
o
m
m
o
n)
Current: I
Volts: V
SW8
AI2 Mode Switch
