VFD68 Variable Frequency Drives (230 or 460 VAC)
19
Making Low-Voltage Wiring Connections
Low-voltage wiring terminals are located underneath the front cover. See Figure 11 and Table 14.
IMPORTANT:
If using two input devices, both devices must be identical. Do not use input devices with
different ranges and operating characteristics.
Table 14: 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 (15mA 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.
SC
Safety Stop
Common
Common for S0, S1, and S2 terminals
SD
Common
Common for + 24 VDC Supply and contact inputs (using Sink logic - default setting)
Figure 11: 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
a
fe
ty
S
to
p
In
p
u
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
